HomeMy WebLinkAboutResolution No. 2017-14 IRE,SOLUTION NO. R2017-14
A RESOLUTION APPROVING AND ADOPTING
UPDATES/AMENDMENTS TO THE "DESIGN CRITERIA
MANUAL" FOR THE CITY OF FRIENDSWOOD, TEXAS;
APPROVING THE STANDARDS CONTAINED THEREIN
FOR THE DESIGN, CONSTRUCTION AND
INSTALLATION OF PUBLIC INFRASTRUCTURE AND
RELATED FACILITIES AND IMPROVEMENTS WITHIN
THE CITY; AND REPEALING ALL PRIOR DESIGN
CRITERIA MANUALS AND REPEALING OTHER
RESOLUTIONS OR PARTS OF RESOLUTIONS
INCONSISTENT OR IN CONFLICT HEREWITH.
WHEREAS, consistent with APPENDIX B "Subdivisions", Section III(a), of The City
Code of the City of Friendswood, the City of Friendswood Design Criteria Manual shall be
updated from time to time and adopted by Resolution; and
WHEREAS, the City Council has determined a need for updating the City of
Friendswood Design Criteria Manual to provide for the most current and comprehensive
standards covering the design, construction, and installation of public infrastructure and related
improvements within the City; and
WHEREAS, the City of Friendswood-Community Development Department "Design
Criteria Manual", which document is updated/amended and on file with the City Secretary's
office, shall be approved and adopted as the most recent Design Criteria Manual for the City of
Friendswood; now therefore,
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF FRIENDSWOOD,
TEXAS:
Section 1. The facts and matters set forth in the preamble of this Resolution are
hereby found to be true and correct.
Section 2. That certain City of Friendswood-Community Development Department
"Design Criteria Manual", dated July 2017, a true and correct copy of which is on file in the
office of the City Secretary and for all things made a part hereof, is hereby adopted. The
standards and related documents contained and referred to therein shall control and are hereby
established as minimum design, construction, and installation standards for certain public
infrastructure and related improvements within the City of Friendswood, Texas, for City projects
and subdivision and other related development. In the event of conflict between any provision of
the Design Criteria Manual and any ordinance of the City, or between the Design Criteria
Manual and any condition of plat or development approval imposed by the City, the provisions
of any such ordinance or term or condition of approval shall control.
Section 3. The Director of Community Development shall maintain copies of such
Design Criteria Manual and related documents, which shall be made available, upon payment of
the reasonable costs of publication thereof, to any person requesting same. The Director is
further directed to periodically evaluate and review such standards and, when deemed necessary
and appropriate, recommend changes to City Council.
Section 4. All other resolutions adopting prior versions of the Design Criteria Manual
or any resolution inconsistent or in conflict herewith, are, to the extent of such inconsistency or
conflict, hereby repealed.
PASSED,APPROVED AND RESOLVED on this 5th day of JJ®,2017.
Ilk
Kevin M. Holl'aAd
Mayor
ATTEST:
•
40
E/VC-
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A.,
Melinda Welsh TRMC
City Secretary
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R2017-14 2
fENUS k1004* CITY OF FRIENDSWOOD
{{'y DEPARTMENT OF PUBLIC WORKS
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Patrick Donart, PE, CFM
Director of Public Works/City Engineer
APPROVED BY
RESOLUTION NO. R2017-14
JULY 2017
City ofFnendswood Design Criteria Manual
Department of Public Works Changes to this revision
Engineering Division
Changes in the 2016 revision of the City of Fnendswood Design Criteria Manual shall be listed
here by Section Most of the changes throughout the Design Criteria Manual are
Changing all mentions of "the Director ofPuhhe Works and the City Engineer" to "the
City Engineer "
Changing all mention of `Professional Engineer heemeed by the State of Texas" to
`Professional Engineer licensed to praekee engineering in the State of Texas "
Changing Community Development Department" to "Department ofPuhhe Works" and
adding "Engineering Division"
Delete "City limits" and "inside the City limits"
Standardizing all formats, font type, font size, and outline numbering to \c same
throughout the entire Design Criteria Manual.
Correction of all spelling and grammar throughout the Design Criteria Manual
Correction of numbering either number spelled out such as twenty-three or in numbers
such as 23 to the format that is the same as the City of Friendswood Technical
Specifications; twenty-three (23), except in cases where used in either a formula or scale
such as Q=23 fps or F—20'
Changes to Section I—Graphic and Design Requirements:
1 04 C—'delete "mylar"mud insert `paper stock"
1 04 H—msert_"profile sheet" to the first sentence after Plan
1.04 J.1 —delete`"streets with esplanades" and insert "major eolleetors and houlevards
1 04.J 2—insert "collector" after the word minor
1 04 J 2—delete "residential single Jamey" and insert `4oeal"
1 04 S 2—delete "fiber optic cables" and insert `franchise utility lines"
1 04 V —delete "6 months" and insert "one (I)year"
Changes to Section II—Wastewater Collection System:
1 0 D — delete `Plumhing Code" and insert `International Plumhing Code, as adopted
and amended by ordmanee"
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City ofFnendswood Design Criteria Manual
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Engineering Division
1 02 B—insert "Galveston County Health Department"
1 03 B — delete `Plumbing Code" and insert `International Plumbing Code, as adopted
and amended by ordmanee"
1 03 F — delete `Plumbing Code" and insert `International Plumbing Code, as adopted
and amended by ordmanee"
1 04 D 2—delete "Commercial" and insert "Non-residential".
1 04 E Insert "Service leads shall be sized with Paragraph 1.04 G of this Seetion" as the
first numbered sentence
1 04 E 4 g — delete `Plumbing Code" and insert `International Plumbing Code, as
adopted and amended by ordinance".
1 04 F 3—delete "Texas Department ofHealth, 'Design Criteria for Sewerage Systems
and insert "Title 30 of the Texas Admmistrative Code, Chapter 217 of Texas Commission
on Environmental Quality (TCEQ), and Galveston County Health District"
1 04 F 6—delete "Inspector" and insert `ProleetManager"
1 04 J 2 d3) — delete "will be allowed only" and insert "is the preferred method of
terminatini" in reference to service connections for sanitary sewers.
1 04 J 2 d 4) — delete "as approved by the Standard Wastewater Products Commute
and insert "approved" before the word grout
1 04 J 2 it 5) to—delete "94" and insert "latest edition"
1.04 J.2 it 5) —insert 'j),411 manhole covers shall have the City ofFriendswood seal and
"SANIT,4RP SEWER" imprinted on the lid as shown in S ofFriendswood Standard
Sanitary Sewer Details"
1 04 J 2"X5) — insert "k) All 7n single farmy rekidential pressured 04seharge lines
terminating in a manhole shall result in the manhole being protected by either a eoating
or concrete admixture to the interior walls of the manhole".
1 04—insert the following as paragraph"U'.
L Grease Traps/Grease Interceptors
Gravity grease intereeptors shall be designed to remove grease from effluent and
shall be sized in accordance with this seetion Gravity grease intereeptors shall
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Engineering Division
also he designed to retain grease until accumulations can he removed by pumping
the interceptor
1 Each grease trap/grease interceptor shall he installed in such a mariner
that it can he easily accessible for inspection, cleaning and removal of the
intercepted grease All permitting, construction, design, and inspection
activities mus completed in accordance with the maimmeturer's
instructions—and the International Plumbing Code Additionally, the
following specifications must he meorporated into grease trap design
a. The grease trap/grease interceptor shall he constructed with a
minimum of two haffles
I. Grease traps/grease interceptors are to he installed at a minimum
distance of 10 feet from sinks and dishwashers to allow for
adequate cooling of the wastewater Water temperatures must he
less than one hundred twenty (120) degrees prior to entering
grease trap
e. All grease hearing waste streams should he routed through an
appropriate grease traps/grease interceptor, including three-
compartment sinks, pot/pan sinks, soup kettles, hand-washing
sinks, dishwashers, mop sinks and floor drains Notable
Exceptions Drains that receive "clear waste" only, such as from
ice machines, condensate from cods, and drink stations, may he
plumhed to the sanitary system withoutpassing through the grease
trap
`. 11——All exterior or recessed grease traps/grease interceptors are to he
installed with an effluent sampling well
2 Requirementsfor traps are asfollows
a Equipment and facdines of a Type and capacity approved by the
approving authority shall he provided
h The trap shall he located in a mariner thatprovides ready and easy
aeeessihdity for cleaning and inspection
e The trap shall he maintained in effective operating condition so as
to meet an effluent od/grease test parameter of less than one
hundred(100) mg11
d Traps shall conform to a minimum detention time of thirty (30)
minutes and a maximum of sixty (60) minutes
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e The minimum size shall be one thousand(1,000) gallons or greater
as determined by the design engineer
Changes to Section III—Water Line Distribution System:
1 04N 1 e—delete "See Attachment 2"
1 05 D 4 a—delete "ExhibctA-TableB105 1 at the end of this section" and insert "Exhibit
A — Table B105.1 of the International Building Code, as adopted and amended by
ordmanee"
1 05 F.1 a—delete `Meters shall be located in areas with easy access and protected from
traffic and adjacent to right-of-way whenever possible"
105.F2—delete "do not intereormeet multiple meters" and insert `multiple rune shall
not he interconnected". X
1 05 F 3—in the last sentence delete "the" and insert "applicable".
1 05 F 3—in the last sentence delete "assembly" and insert "assemblies"
1 06 D 1 —delete "For construction within the City limits, an appheation" and insert A
permit"
1 06D 1 —delete "submittedta"-and nedfrom"
1 06 D 1 —delete "Inspections"
Changes to Section IV— Vmg:
1 04 A 3—insert t h seal Specifications"
1 04C.1 a—delete "15" and insert "twelve (12)"
1 04 C 2 a—delete "15" and insert "twelve (I Changes to Section V—Storm Drainage:
1 04 B 3 Table—delete "OBD" and insert "DD''
1 04 C 1 c 1) — delete "Standards" and insert "Teehmeal Specifications and Standard
Details"
1 04 C 1 c 1) b)—delete "filed with" and insert "obtained from"
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Engineering Division
1 04 C 1 c 1) c) —delete "avadahle at the City of Friendswood Community Development
Department' and insert "defined m Appendix F of this Design Criteria Manual'
1 04 C 5 f— delete "he placed so as not to he located" and insert "not he placed or
located"
1 04 E 1 a — delete "GCCDD & HCFCD" and insert "Galveston County Consolidated
Drainage District(GCCDD) and Harris County Flood Control District(HCFCD)"
1 04H 1 — Insert new paragraph after paragraph 1 04 H.1 c `All commercial and non-
residential new developments, additions, or redevelopments will require a new or revised
drainage plan for additional impervious cover. The standard minimum rate of detention
referenced in paragraph 2 below will apply to this impervious cover"
1 04 H 2 —delete paragraphs a through d, and insert the following
2 Calculation of Detention volume using the Hydrologic Method for
Projects of one hundred(100) acres or less.
a Minimum Rate ofDetentionfor Projects of one hundred(100)
acres or less
When using any of the methods detailed below for calculating the required
amount of detention, the minimum amount of detention provided shall
" never-he less that the following standard minimum rates asfollows
For the purpose of determining the standard minimum rate, all the
acreage used in the calculation must melude proposed or existing !€
_ development Raw/undeveloped acreage may not he mcluded in the
calculation to lower the standard minimum rate
1) Commercial Projects—Defined as projects with ninety (90)
percent or more impervious cover or a runoff eoe ieient of
nine-tenths (0 9) or larger—Standard mmiMurli rate of six-
tenths (0.6) ac.ft per acre tom/
2) Multi-Famdy Projects—Defined asp6j;eets with eighty
(80)percent or more impervious cover or a runoff
coefficient of eight-tenths (0 8) or larger—Standard
minimum detention rate fifty-five-hundredths (0 55) ae ft
per acre
3) Residential Projects—Defined as projects with forty (40)
percent or more impervious cover or runoff coefficient of
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fifty-five-hundredths (0 55) or larger—Standard minimum
detention rate offive-tenths (0 5) ae ft per acre
4) Estate LotProleets—Defined as proleets with less than
forty (40)percent impervious enter or a runoffeoeffeient
less than fifty-five-hundredths (0 55)—No Standard
minimum detention rate shall apply
5) Mixed Use Proleets—The Standard minimum rate of
detention shall be determined based upon weighted
average of the minimum rates setforth above
b. ModifiedRationalMethod. ,v
The modified rational method may bee d to etermine�de ention
storage for all projects less than five (5) acres
e. Simplified Method
For proleets less than five (5) acres, the standard minimum rate
may be used in lieu ofperforming a more eomplex analysis This
eoeffeient multiplied by the total acreage will yield the total
detention volume required
d Optional Detention Storage Methodologyfor Proleets of one
hundred(100) acres or less
The maximum allowable release rate from the detention faedity
during the one hundred(100)year storm event is the one hundred
(100)year peakflow rate from the area under pre-development
eondinons The undeveloped peakflow rate shall be determined
using the rational method
The following method will be aeeeptable for determining storage
volume if the simplified method is not utilized
3 The Triangular Hydrogroph Method may be used, or
4 The Unit Hydrograph Method may be used"
1 04 H 6 b 2)—delete "three and one-half(3 5)" and insert "five (5)"
1 04 H 6 b 5)—delete "3 5" and insert "five (5)"
1 04 H 7—to the table to row 1 delete "3 5" and insert "5"
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Engineering Division
1 04 H 7—1n the table in row 2 delete "3 5" and insert "5"
Changes to Section VI—Site Development
1 0 D —Delete entire paragraph
1 01 —delete "Site Developmen " and insert "Criteria for the design of site development
plans"
1 02 C—insert "and Teehmeal Speeefieations" after Details
1 04 A 1 d— delete "2003" and insert "latest version of the" before International Code
Series. V - d 1. _ W %011.0. N.
1 04 A 1 d—insert "as amended" after International Code Series.
1 04 A 1 h—delete "make a" and insert "change direction a minimum Of
1 04 A 1 h—delete "turn will need another" and insert "will require a different'
1 04 A 2 d—delete `Based on the DRC" from the beginning of the first line
1 04 A 2 e—delete "is prepared after all comments on staffreview have been addressed"
and insert "will he presented to the Planning and Zoning Commission by City Staff for
eonsideration"
1 04 A 2 e — delete the second sentence `Any appheant and"submit d site plan for
eonsideration by the Planning and Zoning Commission at any time after the staff review
is completed".
1.04 A 2 f—delete "suhmUtal for the
1 04.A 2 f— delete "requires that nine copies of", "suhsechons 1 through 3", "and 3
copies of", "suhseetions 1 through 5" and insert "suhmUtal"
1 04 A 2 g — insert "Once the site plan is approved, the developer may begin the
permittingproeess." to the beginning of the paragraph
1 04 A 2 g — delete "Commission approval' and insert "the issuance of budding
permits"
1 04 A 2 g — delete "Once the site plan is approved, the developer may begin the
permitting proeess " at the end of the paragraph
1 04 A 21—delete "resubmitted" and insert "submitted"
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Department of Public Works Changes to this revision
Engineering Division
1 04 A 21—delete "final'
1 04 A 21—delete "the hudding" and insert "any appheahle"
1 04 A 3—insert `latest' after and
1 04 A 5—insert `Department ofPuhhe Works" a$pr the word City
1 04 A 6 a—delete "development' and insert "developer"
a
1 04 A 6 c—delete "Other" and insert `Additional".
( n
1 04 A 7.c — delete "Texas to permit' and insert "Texas. If approved, the analysis will
he used to allow"
1 04.A 7 d —insert "unless otherwise approved by the City Engineer" after line.
1.04 A 71—delete "Commercial" and insert "Non-residential" in three places
1 04 A 71—insert "latest version of the" before City.
1 04 A 71—insert "and Teehmeal Specifications" after Details
1 04 A 8 a—delete `lane easements" and insert "lanes".
1 04 A 8 a—insert ",private street," after lane
1 04 A 9 1—delete "queueing" and insert "staeking"
1 04.A 10—insert "Storm Water" before Pollution
1 04A 10—insert `Plan" after Prevention.
1 04 A.10.a—insert "sto ater" between"a"and"pollution"
1 04 A 10 c —. delete "completed, either filter fabric fence," and insert "the filter fabric
fence may he re vgd, provided a minimum o',.
1 04 A 10 c—insert "and/or installed"
-
1 04 A 11 —insert "or" between alteration and remodeling
104 A 11 —delete "or change ofuse"
104 A 11 —delete "or change ofuse of land"
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Engineering Division
1 04 A 11 —insert subsection "a Concrete pavement thickness shall be a minimum of
five (5) mehes with eight(8) mehes ofstabdized subgrade Reinforcement shall be Grade
60,fy = 60,000 psi, 44 deformed reinforcing bars spaced at sixteen (16) mehes center to
center both ways and minimum lap lengths of eighteen (18) mehes"
1 04 A 11 —insert subsection "b Hot Mix Asphalt Concrete pavement thickness shall
be a minimum of two (2) meJ�eith eight (8) mehes of stabilized crushed concrete or
limestone and six (6) mehes oflime-stabilized subgrade".
1 04A 11 d—delete "or use".
1 04 A 11 d—delete "to the extent of mereasing or changing the use
1 04 A 11 d—delete "or use" at the end of the first line
1 04.A 11 d— delete "remodeling is to the extent that the use" and insert "remodel" to
the second line
1 04 A 11 d—delete "or use" in the last line
1 04 A 11 f—delete "recommended" and insert "required" in the first line.
1 04 A 1 Lf— delete "Zoning of the Code of Ordmanees" and insert `Design Criteria
Manual"
1 04 A 11 € --delete the last two (2) lines to the paragraph "Shopping centers eontaming
not more than 200,000 squarefeet of gross leasable floor area should have a minimum of
six spaces per 1,000 square feet of gross leasable floor area Shopping centers
eontaming more than 2,00,000 square feet of gross floor area should have a minimum of
5 5 spaces per 1,000 square feet of gross leasable floor area"
1 04 A 11 1—delete `Approval of" from the begtmmng of the first sentence
1 04 A.11.1—delete "given" and insert "approved"
1 04A 12—delete `Parking Lot Guidelines" and insert `Pipelines'
1 04 A 12—insert subsection as follows `All new Pipelines shall be a minimum depth of
ten (10)foot in depth to the top of the pipe in all new or existing road rights-of-way"
203 D—delete "showing appropriate" and insert "illustrate anyproposed
2 03D—insert "the" between into and existing
2 03 F—delete `Appendix C" and insert "as set forth in the
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Engineering Division
2 03 F — delete the second line `A tree survey is required for first 20 feet of depth
adjacent to all proposed streets"
2 03 F—delete `Appendix C" and insert `Appendix D"
2 03 J—insert "and Technical Specifications" after Standard Details
203L—delete "Develo nt"
2 03 M—delete "City approval" and insert "approval from the City Engineer"
203 M—delete "of' and insert "within".
2 03 M—delete `Appendix C" and insert `Appendix D".
2 03.M—insert "Engineer" after City in the durd line
Changes to Appendix A—Attachments:
On Page 1. Attachments Delete item"2ANSFNSF Standard 60 and 61 Certification".
Delete page 3 of 8 in its entirety
Changes to Appendix B—Figures:
On Page 1 item 7 delete "OffstreetParlang" and insert "Cul-de-sac".
On page 1. insert item 9 "Off StreetParlang"
Figure 7 in the Abutting Land Use Table delete line "D 40 45" and insert "D 50 55"
Figure 7 in the Abutting Land Use Table delete line "E 50 55" and insert "E 60 65"
Changes to Appendix C—Parking Group Tables:
Delete "Commercial Lodgings" under parking spaces and inserted `Accommodations"
Deleted Accommodations &Food Services" under Parking use category
In line 4 of both Accommodations and Accommodations with food deleted "20" and
inserted "21"
Move to the before Arts, Entertainment& Recreations
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Department of Public Works Changes to this revision
Engineering Division
Amusement and Recreation
Industries
Arcade 1 space per 200 sq it GFA
Drzmng/ArcheryiShooting Rouge l space per 200 sq it GFAof indoor facilities plus l space pertee ortarget
Fairground, Fshibi2on C¢rvuv¢[ 1 space per 500 sq it of outdoor site areaplus 1 space per 4 fixed spectator
seas
Fitness and Recreational Sports 7 spaces per 1,000 sq it GFA
Golfcourse 1 spaceper150 sq it GFAof indoorfamhhes plus 5 spacespergreen
Miniature Golf 1 space per 200 sq it GFAof indoor facilities plus 1 5 spaces per hole
Rodeo, Circus,Auto/Motorcycle
1 space per 3 spectator seats
Racing
1 space per 200 sq it GFAof indoor facilities plus 1 space per 2 persons
Skateboarding, Water Slide design capacity of outdoor facilities
1 space per 100 sq it GFAof indoor facilities plus 1 space per4 persons
Sporty Pa rk, and Play Pools, design capacity of outdoor facdities,including both participants and
Private P¢rks, and PI¢yg rounds
spectators,as applicable
Tennis Courts and Other Sports
2 spaces per court
Courts
Insert the following
Automotive Repair 13 spaces per service bay(service bays not included as parking)
Food Service
Restaurant 10 spaces per 1,000 sq it GFA,
Restourantbar area 15 spaces per 1,000 sq it GFA,
Fast Food 8 spaces per 1,000 sq it GFA,
Take Out and Delivery Only 3 spaces per 1,000 sq it GFA,
Aeght Club, 15 spaces per 1,000 sq it GFA
Insert after Retail Trade
Shopping Centers -6 spaces per 1,000 sq it GFAup to 200,000 sq it,
-5 5 spaces per 1,000 sq it GFA over 200,000 sq it
Changes to Appendix D—Qualified Tree List:
Class 2 delete "either"
Site delete "once established"
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Department of Public Works Changes to this revision
Engineering Division
Insert after site
Light
1—Full Sun (requires a minimum of 6hours of direet sunlight)
2—Partial Sun (requires a minimum of to 6hours of direet sunlight)
3—Shade (requires less than 3 hours of direet sunlight)
NOTE Lower rating number on this Seale is the minimum, but can use the next higher
rating (1 e. a rating of 2 can also use the rating of 1, a rating of 3, can also use the
ratings of I and 2)
In foliage delete "house" and insert "building"
Changes to Appendix E—Downtown District Amenities:
Under seating delete "Urhanseape Geneve Colleetion" in its entirety
Under light poles delete "Dynamic Lighting" in its entirety.
Under light poles, insert the following "Lamp shall he positioned towards rights-of-way
to illuminate puhhe walk"
Under Pavers delete `Belgard" in its entirety
Insert "Conerete hale Paver Seetion".
Insert Appendix F—Culverts and Driveways Policy
Insert Appendix G—Traffic Control Sign Policy.
Insets Appendix H—Streetlight Policy
/ rY
7 �r%
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City ofFnendswood Design Criteria Manual
Department of Public Works TABLE OF CONTENTS
Engineering Division
TABLE OF CONTENTS
REVISION CHANGES
Changes to dus revision of the Design Criteria Manual
SECTIONS
I Grapkuc and Design Requirements
S Grp 4
�l
II Wastewater Collection System Design Requirements
III Water Line Distribution System Design Requirements
IV Street Paving Design Requirements
V Storm Drainage Design Requirements
VI Site Development Requirements
APPENDICES
A Attachments
1. Lift Station.Start Up Log
2 Design Criteria Modification Form
3 Galveston County Consolidated Drainage District Form DR-001
(Attachment 4) 70UNNc NEW
1895
B Figures
1 Geometric Street Design Standards
2 Divided Roadway Cross Sections—Urban
3 Roadway Tapers for Subdivision Streets
4 Undivided Roadway Cross Sections—Urban
5 Typical Length of Median and Median Opening
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Department of Public Works TABLE OF CONTENTS
Engineering Division
6 Median Nose and Left Turn Bay Design
7 Cul-de-Sac
8 Driveway Spacing and Other Measurements
9 Off-Street Parking
4
C Parking Group Table D
EN
D Qualified Tree List
�o
E Downtown District Amenities
F. Culverts and Driveways Policy
+� k
G Traffic Control Sign Policy
H Streetlight Policy
lc�� v �
i
FouNOEO
1895
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City of Friendswood Design Criteria Manual
Department of Public Works GRAPHIC AND DESIGN REQUIREMENT S
Engineering Division
SECTION I
GRAPHIC AND DESIGN REQUIREMENTS
1.0 GENERAL
A. Should any portion of this Section conflict with any provisions of the Subdivision
Ordinance or Zoning Ordinance, the more stringent of the latter two (2) shall
govern.
B. The Cite Engineer shall have the final interpretation of any provisions in this
Design Criteria Manual.
C. The Cite Engineer has the right to issue administrative orders or design criteria
modifications for just cause related to any provisions or conditions in this Design
Criteria Manual.
1.01 CHAPTER INCLUDES:
Graphic and design requirements for construction drawings.
1.02 REFERENCES:
The City of Friendswood Standard Details and City of Friendswood Technical
Specifications, latest versions. These can be downloaded from the City's website at:
www.friendswood.com/publications
1.03 DEFINITIONS:
A. CADD (Computer Aided Drafting Design) — the preparation of documents
utilizing computer facilities for the production of drawings, plans, prints, and
other related documents.
B. HCFCD—Harris County Flood Control District.
C. GCCDD—Galveston County Consolidated Drainage District.
1.04 DESIGN REQUIREMENTS:
A. Provide a cover sheet for all projects involving three or more design drawings
(excluding standard detail sheets). Drawing sheet numbers shall be shown on the
cover sheet or area key map. Include a vicinity map to identify project locations.
Also provide current Cite of Friendswood Standard Details Signature Block that
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City of Fnendswood Design Criteria Manual
Department of Public Works GRAPHIC AND DESIGN REQUIREMENT S
Engineering Division
has a note stating that approval is valid for only one (1) year from the date of
signatures.
B. Preliminary drawings shall be prepared on nominal twenty-four (24) inches by
thirty-six (36) inches or twenty-two (22) inches by thirty-four (34) inches overall
paper stock.
C. Final drawings shall be produced by C_yDD on paper stock. The engineer shall
also submit, at the time of plan approval, an electronic PDF and DWG version of
the C_yDD drawings on CD-ROM of the development showing all lot lines and
associated lot information, rights-of-way, easements, contour-lines, utilities, and
all drainage and paving improvements.
D. Details of special structures (not covered by approved standard drawings such as
stream or gully crossings, special manholes, or junction boxes, etc.) shall be
drawn with vertical and horizontal scales equal to each other, and shown on a
separate sheet(s)from the Standard Detail sheets.
E. Each set of construction drawings shall contain paving and utility key drawings
indexing specific plan and profile sheets. City of Friendswood Standard Detail
drawings, where applicable, shall be included. All sheets shall have standard title
blocks and be sequentially numbered. Where applicable, show HCFCD or
GCCDD key drawings and numbers.
F. A drawing index shall be shown on the overall cover sheet.
G. Overall project layouts shall be drawn to a minimum scale of 1 inch = 100 feet
and provided with a drawing index.
H. Plan and profile sheet stationing must nun from left to right, except for short
streets or lines originating from a major intersection.
1. A north arrow shall be shown on all sheets (except standard or special detail
sheets) and shall be located either toward the top or to the right. This requirement
is waived under the following conditions:
1. Short sections of improvements fitted on a sheet that otherwise has the
north arrow correctly shown.
2. Stationing is intended to start from the cardinal points of the compass and
proceed in the direction of construction.
J. Standard scales permitted for plans and profiles of paving and utility construction
drawings are as follows:
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City of Fnendswood Design Criteria Manual
Department of Public Works GRAPHIC AND DESIGN REQUIREMENT S
Engineering Division
1. Major thoroughfares, major collectors, and boulevards over four hundred
(400)feet in length, or special intersections/situation.
a. 1 inch = 20 feet horizontal. 1 inch = 2 feet vertical
2. Minor collectors or local streets.
a. 1 inch = 20 feet horizontal. 1 inch = 2 feet vertical
b. 1 inch = 40 feet horizontal. 1 inch = 4 feet vertical
C. 1 inch = 50 feet horizontal. 1 inch = 5 feet vertical
3. Scales in Paragraph No. 2 above are a minimum: larger scales may be
used to show details of construction.
K. Each plan and profile sheet shall have a benchmark elevation and description of
the benchmark, along with a current flood zone determination statement. Also
include the temporary benchmark(TBM) with their elevation and coordinates.
L. The seal, date, and original signature of the Professional Engineer licensed to
practice engineering in the State of Texas, and who is responsible for the
drawings, shall be required on each sheet developed by the engineer, along with
their firm's registration information. The engineer may use a stamped or
embossed imprint for his/her seal: however, the embossed imprint must be shaded
such that it will reproduce on prints.
M. A copy of the final plat for new developments shall be included with the final
drawings when submitted for final approval.
N. If a roadway exists where drawings are being prepared to improve or construct
new pavement or a utility, label the existing roadway width, surface type, and
thickness. Pavement thickness shall be ascertained by coring with the core hole
and grout filled to protect pavement prior to construction.
O. Show all street and/or road alignments on drawings.
P. Develop drawings to accurate scale showing proposed pavement, typical cross
sections, details, lines and grade, and all existing topography within street rights-
of-way, and any easement contiguous with the rights-of-way. At the intersection,
the cross street details shall be shown at a sufficient distance [twenty (20) foot
minimum distance outside the primary roadway rights-of-way] in each direction
along the cross street in order to design adequate street crossings or transitions.
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Department of Public Works GRAPHIC AND DESIGN REQUIREMENT S
Engineering Division
Q. Match lines between plan and profile sheets shall not be placed or shown within
cross street intersections including cross street rights-of-waN.
R. Natural ground profiles shall be shown as follows:
1. For privately-handed projects, center line profiles are satisfacton, except
where a difference of one-half(0.5) foot or more exists from one (1) rights-
of-way or easement line to the other, in which case, dual profiles are
required.
2. For Cite of Friendswood projects, provide natural ground profiles at each
rights-of-way line. Easement profiles shall conform to S.1 below.
S. Basic plan and profile sheets shall contain the following information:
L Identify all lot lines, property lines, easements, and/or rights-of-waN.
2. Label each plan sheet as to street/easement widths, pavement widths,
pavement thickness where applicable, type of roadway materials, curbs,
intersection radii, curve data, stationing, existing utilities (type and
location), and any other pertinent feature affecting design.
3. Show all utility lines four (4) inches in diameter or larger within the
rights-of-way or construction easement in profile view. Show all utilitN
lines, regardless of size, including franchise utility lines, in the plan view.
4. Graphically, show flow line elevations and direction of flow for all
existing ditches.
5. Label proposed top of curb elevations and grades, except at railroad
crossings. Centerline elevation and grades are acceptable only for paving
without curb-and-gutters.
6. Curb return elevations and grades for turnouts shall be shown in profile.
7. The centerline elevation at the property line of all existing driveways shall
be shown in profile.
8. Station all esplanade noses or the centerline of all esplanade openings with
esplanade width shown, both existing and proposed.
9. The design of both roadways is required on all paving sections with an
esplanade.
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Department of Public Works GRAPHIC AND DESIGN REQUIREMENT S
Engineering Division
10. Station all Points of Curvature (PCs). Points of Tangency (PTs), radius
returns, and grade change Points of Intersection (PIs) in the plan view.
Station all radius returns and grade change Points of Intersection (PIs) in
profile with their respective elevations.
T. Provide a Storm Water Pollution Prevention Plan (SWPPP)with legend. See
Section VI— Site Development under Design Requirements.
U. The Drainage Plan shall have a current FENIA flood zone determination
statement.
V. All "No Objection" letters expire one (1) year after issuance.
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Department of Public Works WASTEWATER COLLECTION SYSTEM
Engineering Division
SECTION II
WASTEWATER COLLECTION SYSTEM
DESIGN REQUIREMENTS
1.0 GENERAL:
A Should any portion of dus Section conflict with the Subdivision Ordinance or the
Zoning Ordinance, the more stringent of the latter two(2) shall govern
B The City Engineer shall have the final interpretation of any provisions in dus
Design Criteria Manual.
C The City Engineer has the right to issue administrative orders or design criteria
modifications for just cause related to any provisions or conditions in this Design
Criteria Manual
D Sanitary sewers located on private property that are not in a dedicated easement,
are under the jurisdiction of the International Plumbing Code, as adopted and
amended by ordinance, and will be addressed/reviewed by the Building Official.
101 CHAPTERINCLUDES
Criteria for the design of wastewater collection systems
102 REFERENCES
A Texas Commission on Environmental Quality (TCEQ) — 'Design Criteria for
Sewerage Systems" — Texas Administration Code — Chapter 217 (current
revision). FouNueu
�N 1895
B Galveston County Health Department
C City of Friendswood Standard Details and Technical Specifications, latest
version These can be downloaded from www fnendswood com/publications
103 DEFINITIONS
Where used in these regulations, the following terms shall be construed to carry the
meanings given below
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A Public Sanitary Sewer — A closed conduit which conveys wastewater flow and
which is located within the public nghts-of-way or dedicated public easement A
public sanitary sewer (or public sewer system) is intended to serve more than one
(1) "owner"
B Private Sanitary Sewer—A closed conduit Much conveys wastewater flow and is
constructed and maintained by a private entity (nes) (ie, homeowner's
association) Private sanitary sewers may be located in areas such as a private
street or common area, and are subject to the design and construction
requirements of the International Plumbing Code, as adopted and amended by
ordinance Private sanitary sewers must discharge to a public sanitary sewer
C Sanitary Sewer Main—A sanitary sewer which receives the flow from one (1) or
more lateral sanitary sewers
D Lateral Sanitary Sewer —A sanitary sewer running laterally down a street, alley,
or easement,Much receives only the flow from the abutting property
E Service Lead — A sanitary sewer which branches off a public sanitary sewer and
extends to the limits of the public rights-of-way It shall be construed as having
reference to a public sanitary sewer branching off from a main or lateral sanitary
sewer to serve one (1) or more houses, single-family lots, or other types of small
land tracts situated in the same block with the said main or lateral sanitary sewer,
but not directly adjacent thereto Such a line shall never exceed one hundred fifty
(150) feet in length If the sanitary sewer is designed to serve more than two (2)
houses, or the equivalent of two single-family residences ahonga,street, a lateral
sanitary sewer as defined above shall be constructed
F. Service Connection—A private sanitary sewer from a single source to the main or
lateral sanitary sewer in the street, alley, or easement adjacent thereto Service
connections are covered by the International Plumbing Code, as adopted and
amended by ordinance It will be owned and maintained by the owner of the
property being served by said sanitary sewer
G Project Area—The area wnflun the immediate vicinity of the public sanitary sewer
to be constructed. For example, of a public sanitary sewer were to be constructed
wnflun the public rights-of-way, the project area would extend ten (10) feet to
either side of the public nghts-of-way If as an example, a public sanitary sewer
is to be constructed wnflun a dedicated easement adjacent to the public nghts-of-
way, the project area would extend ten (10) feet to either side of the dedicated
easement, depending upon the existing topograplucal elements, unless impacted
by a permanent structure (i e , telephone pole, trees, drainage ditches, etc) If, as
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Department of Public Works WASTEWATER COLLECTION SYSTEM
Engineering Division
an example, a public sanitary sewer is to be constructed within a side lot easement
(if approved by the City), the same criteria would apply as for a dedicated
easement adjacent to public nghts-of-way
H Stack — A user pipe constructed on main or lateral sanitary sewers wluch are
deeper than six (6) feet, measured from finished grade at manhole to facilitate
construction of service leads or service connections
I Force Main—A pressure-rated conduit(i e. ductile iron pipeNessure-rated PVC,
etc) that conveys wastewater from a pump station to a discharge point
J All references hereafter to sewer, public sewer, private sewer, sewer main, lateral
sewer, service lead, service connections, stack, and force mains shall mean
elements of a sanitary sewer system.
104 DESIGN REQUIREMENTS
A Drawings to be fumished
Before any main or lateral sewer is constructed and before a permit shall be issued
for the construction of same, plans and profiles of the proposed sewer shall be
prepared and submitted to the City for approval All reproducible drawings and
CADD files shall become the property of the City and shall remain on file in the
City for the use of any person who may be interested in such information
B Details to be shown on drawings
The detailed plan view will show the exact location of public sewer lines in the
street, alley, or easement with respect to the edge of the particular rights-of-way,
the survey base line, and any nearby utilities, mayor landscaping, and other
structures affecting construction
C Main and Lateral Sewers .
1 Sewers in curved easements, easements defined by property lines, and
combined easements containing other public utilities shall be shown both
in detailed plan and profile views
2 The profile shall show other underground and surface utilities, and
facilities, both in parallel and at crossings, the size, grade of the proposed
line, the elevation of same to hundreds of a foot at all manholes, changes
of grade and dead-ends, and the proposed finished grade over the sewer
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It shall show the actual ground line as it exists prior to construction of the
sewer Where proposed fill or cut is contemplated, the proposed new
ground line shall be shown as a separate line from the actual ground line
Type of pipe and bedding shall comply with City of Fnendswood
Technical Specifications and Standard Details
3 Where public sewers are to be placed between existing pavement and the
street nghts-of-way(or interior easement line) or under existing pavement
or shoulders of pavement, show the existing ground line at both sides (or
the closest side for sewers near the edge) of the rights-of-way or adjacent
sewer easement.
D Sewermaths—plan and profile required 1 r 740 \L\
1 Sanitary sewer layouts for single-family residential subdivisions should
use a scale of one hundred (100) feet or less per inch A scale of two
hundred (200) feet per inch may be used provided the following
information is shown on the layout.
a. All easements containing or buffering sanitary sewers shall have
points of size change shown, and all manhole locations shall be
shown
b -The.sewer alignment shall accurately reflect the relative location of
the sewer as shown on the detailed plan view.
c All service leads that cross street pavement or serve adjacent
property shall be shown on the layout The detail plans and
profiles shall show the flow lines of all service leads at the street or
easement nghts-of-way.
d The number and size of the lots depicted on both the overall sewer
layout sheet and the individual plan and profile sheets shall match
the number and size of the lots depicted on the final plat after
recordation.
e On the overall sanitary sewer layout sheet the size and direction of
flow for all existing and proposed sewers shall be shown
f The location of the proposed sewer widun the public nghts-of-
way, a dedicated easement adjacent to the public rights-of-way, or
side lot easement(if allowed by the City)
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g The overall sanitary sewer layout sheet shall show the area, in
acres, which the proposed sewers) is (are) designed to serve A
location map shall be included that references the average
proximity to nearby mayor thoroughfare and boulevard streets The
scale of the location map shall be 1 inch= 2,000 feet or less
2 Non-residential subdivision sanitary sewer layouts for large areas, and
with a scale of four hundred (400) feet or more peiylnch, shall have an
additional set of layouts at not more titan two hundred(200) feet per inch,
with match lines and a small index map showing which portion of the
overall layout that each sheet's layout represents
3 Acceptable horizontal scales for the detailed plan and profile views shall
be ten (10) feet, twenty (20) feet, forty (40) feet, and not more titan fifty
(50) feet maximum per inch. Horizontal scale for major thoroughfares and
boulevards shall be 1 inch=20 feet or less
4 Acceptable vertical scales for detailed profile views shall be two (2) feet,
four (4) feet, and not more than five (5) feet maximum per inch unless
otherwise approved Vertical scale for mayor thoroughfares and
boulevards shall be 1 inch=2 feet or less
b The plan view shall show, at a minimum,the following information for the
— —protect area
a All topograplucal features,
b. Stationing for the proposed sewers,
c All existing underground and overhead utilities (i e telephone, gas,
power, etc),
d Any significant landscaping and/or other structures which might
impact construction and/or construction related activities,
e The width and type of all existing and7 roposed easements,
f All proposed service leads,
g The limits of bore and/or tunnel,
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h Locations where pressure rated pipe is to be installed at water line
crossings,
1 Drawings for single-family residential subdivisions shall show the
proposed location by stations of all service leads, service
connections, and stacks. The distance from the sewer or survey
base line station to the nearest existing manhole shall be shown in
the plan view or on an additional sewer layout sheet with a scale
no more than 1 inch= 100 feet \`
6. The profile view shall show, at a nurumum, the following information for
the project area.
a Underground and/or surface utilities/facilities which are either
parallel to the proposed sewer or cross the proposed sewers,
b. The proposed sewer's diameter and grade for each manhole
section;
C. The flow line elevation for all sanitary sewers at each manhole,
d The nm elevation of all existing and proposed manholes,
e The flow line elevation at each sheet "break" [i e, from one (1)
sheet to another],
f Type of pipe bedding/backfill shall be noted on each plan/profile
sheet,
g The finished grade for proposed and existing pavemen where
"fill" and/or "cut" is proposed, the proposed new ground.1levation
line shall be shown as a separate line from the exis g ground
elevation line,
h The existing ground elevation line for the "near side" of the public
nghts-of-way where a sewer is to be placed between the edge of
existing pavement and the edge of the public nghts-of-way,
1 The existing ground elevation line at the centerline of the proposed
sanitary sewer where a sanitary sewer is to be placed wnttun an
existing easement,
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I Show any proposed and/or existing pavement,
k The flow line elevation of all service leads where they cross the
edge of the public nghts-of-way or the dedicated easement
adjacent to the public rights-of-way,
1 The limits of bore and/or tunnel,
M. Locations where pressure rated pipe is to be i led at water line
crossings, >'
n The location of special backfill and/or proposed stacks shall be
identified by"stations" indicated on the design plans,
o. The location of stacks shall be labeled with stations
E. Service leads:
1 Service leads shill be sized in accordance with Paragraph 104 G of tius
Section
2 Service leads shall be at the property line between two (2) adjoining lots,
or as directed by the City A single six (6) inch service lead located at the
property line between two (2) adjoining lots would serve two (2) single-
-- --family-residences with a wye placed at the end of the service lead Do not
extend the wye clean-outs beyond the edge of either the public nghts-of-
way or dedicated easement
3 Any service lead extension of more than fifty(50) feet parallel to the street
nghts-of-way shill be treated as a lateral sewer
4. Service leads from developments with more thari seventeen t and five
hundred (17,500) gallons-per-day flow shall discharge ints' proposed or
existing manhole Where the flow line of the service is JArry (30) inches
or greater above the flow line of the manhole, provide a standard drop to
manhole
a Service leads shill be provided to serve each lot within a proposed
development,
b Service leads shall be six(6) inches in diameter (nummum) If the
length of a service lead exceeds one hundred (100) feet or the
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width of the public nghts-of-way by more titan twenty (20) feet,
the nummum diameter shall be eight (8) inches and a manhole
shall be utilized for connection to the public sewer,
c Service leads with a diameter of six (6) inches shall utilize "full
body" fitting (extruded or factory-f dincated) for connection to the
proposed public sewer or an approve saddle-type connector for
connection to an existing public sewer;
d. Saddle-type connectors shall be installed with the "stub" oriented
between the "spring line" (3 o'clock and 9 o'clock positions) and
forty-five (45) degrees from the "spring line" ("130" and "10 30"
positions) Tees (aka, "full body fittings") shall be oriented in the
same manner,
C. The service lead shall be designated to mimmize the use of bends
as site conditions will permit,
f Service leads exceeding the limits defined in 1.04 E 3 shall have a
manhole at each end, as well as, a plan/profile drawing for each
rights-of-way crossing All, or part, of these service leads which
,lil �,1► �--are located in a public nghts-of-way, alley or dedicated saimmy
sewer or public utility easement may be treated as a public sewer,
depending upon the location of the terminal manhole and any
inttermediate manholes,
g_ _ For all existing lots (which are not served in accordance with these
guidelines) that need a service lead, if the distance to the nearest
L existing sewer is less than fifty (50) feet, the service lead falls
\\ \ under the jurisdiction of the International Plumbing Code, as
adopted and amended by ordinance, and the Building Official
F General Requirements:
1 Sanitary sewers shall allow for orderly expansion o�system and shall
conform to the comprehensive water and sewer plan for the City of
Fnendswood
2 Sewers shall be sized based on the mimmum requirements set out in dus
standard and the standard wastewater flow rates as established by the City
of Fnendswood,
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3 All sewers shall conform to the mrmmum requirements of the Tide 30 of
the Texas Administrative Code, Chapter 217 of Texas Commission on
Environmental Quality(TCEQ), and Galveston County Health District
4 Sewers shall be separated from water lines by a nummum of nine (9) feet
Where the minimum separation is not maintained, refer to Section VII for
allowable clearances Sewers crossing utilities other than water, a
nunimum of six(6)inches of clearance must be maintained
5 As maintained by the City of Fnendswood, the public sanitary sewer shall
be defined as all sewers, including stacks and service leads, that serve
more than one sewer connection, and that are located in public easements
or street nghts-of-way, and that are installed in accordance with these
Standards
6 Sanitary lines greater than six(6) feet deep shall require stacks to facilitate
construction of service leads or service connections Stacks shall be
shown on plans with station numbers Place stacks and wyes or tees as
shown. Where no stacks are shown, it is the responsibility of the licensed
plumber to place a City approved saddle for connection to the line and the
responsibility of the City Project Manager to determine that such saddle is
water tight and properly installed
i7 Materials and construction shall conform to latest City of Fnendswood
specifications with all amendments thereto, including standard leak test
8 Unless noted otherwise, all public sewers and service leads shall The
completely embedded in cement-stabilized sand to six (6) inches below
the pipe, twelve (12) inches above the pipe and to six (6) inches on each
side All such bedding shall be compacted to ninety-five (95) percent
standard proctor density The cross-section so described herein shall be
termed the "embedment zone "
9 Backfill all excavation areas/trenches under or within twelve (12) inches
',of existing or proposed pavement or shoulder of pavement with cement-
stabilized sand from the top of the pipe "embedment zone" to the bottom
of the subgrade. Cement-stabilized sand must develop one hundred (100)
psi compression at forty-eight (48) hours Backfill shall be compacted to
ninety-five (95)percent standard proctor density
10 The location of all special backfrll and of proposed stacks shall be shown
by stations in the drawings
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11 Construction notes shall designate the kind and class of pipe with
exceptions to the construction notes to be shown on the plan and profile
sheets
12 Non-sanitary sewer easements or fee strips such as pipeline, power
company, drainage district, railroad, etc , are in and of themselves
insufficient and unacceptable to permit laying of sanitary sewers and/or
force mains across or along the underlying private property or restricted
non-sanitary use type of public property.
13. The final determination as to that portion of a street, alley,determination asement to
be occupied by a proposed sewer rests with the City Engineer who will
take into consideration existing, planned and proposed facilities such as
manholes, pavement, pipe/conduits, along with existing trees, shrubs, or
other unique surface conditions when arriving at a decision ,
14 Where an easement for a public sewer ends at a public rights-of-way, the
last manhole shall be extended into the public rights-of-way at a minimum
of two (2) feet beyond the property line; or as close to the public rights-of-
way as possible due to acceptable clearances required for other utilities
(i e ,water line and storm sewers)
15 The drawings for the sewer shall show the location of any existing known
pipe, duct, or other obstacles that might interfere with the construction of
the sewer and call such to the attention of the City any known obstacles
that might be encountered in constructing the sewer in any location under
consideration The Professional Engineer for the project, who shall be
licensed to practice engineering in the State of Texas, shall determine the
existence of pipes, ducts, and/or obstacles from a visual survey on the
ground plus research of all public records and private records when
available.
16 All sanitary sewer mains shall be constructed utilizing pressure rated pipe
SDR 26,unless specifically approved otherwise by the City Engineer
17 In new developments, sanitary sewer lines shall be centered in sanitary
sewer line easements.
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G Line Size
1 The mimmum pipe diameter for a public sanitary sewer shall be eight (8)
inches
2 Four (4) inch service leads shall be confined to the limits of the lot which
they serve and shall serve only the equivalent of one (1) single-family lot
No four(4) inch sewer shall be laid in any street, alley, or nghts-of-way
3 Six (6) inch service leads shall not serve more than the equivalent of two
(2) single-family lots or other types of small land tracts
4 Four (4) inch and six (6) inch service leads for single-family residential
lots shall have a mimmum grade of one (1 0) percent and one-half (0 5)
percent, respectively.
5 For commercial service leads such as street bores, submit a copy of the
approved plumbing drawings to establish the required size of the line. The
minimum size lead shall be six(6) inch.
6 All main and lateral sewers shall end in manholes, except for special
and/or unusual situations that are subject to specific approval by the City
Engineer
7. All sewer lines shall be laid at a size and depth to conform to designs
permitting an orderly expansion of the sewer system of the City, and so as
to avoid a duplication of lines in the future
8 The City Engineer shall have final approval as to what sizes and depths
are required, along with exceptions to "lateral service leads" as previously
defined
H Line Depth .
1 The sewer should be laid with the top of the pipe a minimum of three (3)
feet below finished grade or top of curb, whichever is lower
2 Sewer land in street nghts-of-way with curb-and-gutter paved streets shall
have a mimmum cover of four (4) feet from the top of the pipe to the top
of the curb to anticipate future sewer extension
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3 Sewers laid in street nghts-of-way with crowned roads and side ditches
shall have a mrmmum cover of five (5) feet from the average ground
elevation line at the adjacent street rights-of-way to the top of pipe
4 Where the mimmum cover as specified in paragraphs H 1, H 2, and H 3
above is not possible, the sewer shall be laid in Class 150 [one hundred
fifty (150) psi] pressure pipe or rigid factory made pipe with cement-
stabilized sand backfill as shown on the City's Standard Details Ductile
iron pipe shall be lined with either a polyethylene 011alyuretrtane coating
as approved by the pipe manufacturer and applied by either the pipe
manufacturer or an approved application. The minimum liner thickness
shall be forty(40) nuls.
5 Maximum depth for eight (8) inch, ten (10) inch, and twelve (12) inch
collection lines shall be twenty (20) feet from average ground surface to
pipe invert. Depths greater than twenty (20) feet are subject to approval
by the City Engineer if justified for site-specific reasons during the
preliminary engineering phase of the project design
I Line Grades:
The following table lists the mimmum and maximum grades for six (6) inch
through twenty-seven (27) inch public sewers The minimum grade is based on a
minimum full pipe velocity of two (2) feet per second The maximum grade is
based on a maximum full pipe velocity often (10) feet per second In both cases,
S 1 � the Marring Formula has been used with an "n" of thirteen-thousandths (0.013)
The use of different pipe materials will not alter the use of durteen-thousandths
(0 01.3) for the purpose of the Design Criteria Manual
wumoei
l \ lass
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Engineering Division
Inside Dimension Minimum Slope(in Maximum Slope(in
(I.D.) Percent) Percent)
of Pipe in Inches to Develop V=2.0 ft./sec. to Develop V=10.0
ft./sec.
6 0.5 1235
8 0.33,_3'_��, 840
10 02$ \ 4` 623
12 02 �i 488
15 01 __ - IO 362
18 oil_7_ 283
21 0.09 230
24 0 08' � \ ! 1 93
27 0.06 l� 165
For sewers larger thast twenty-seven(27) inches in diameter, the Professional Engineer ofrecord,
who shall be licensed to practice engineering in the State of Texas, shall rktermme the
appropriate grack utilaing the Manning Formula, n= 0.013 and a full pipe velocity of two (2 0)
fps minimum and ten(10 0)fps maximum
J Manholes
1 All manholes shall be precast concrete, unless the Professional Engineer
of record, who is licensed to practice engineering in the State of Texas,
submits a "cast in place" manhole design for review and approval by the
City Engineer All precast manholes are required to incorporate a "boot
type connector" for sewer diameters up to twenty-four (24) inches For
sewer diameters greater than twenty-foot (24) inches, utilize either the
"boot" type connector (if available) or an integral gasket All precast
manholes shall conform to the latest ASTM requirements No manholes
may be placed in the paved portion of the City rights-of-way
2 For all public sewers, manholes shall be placed at all changes in
alignment, changes in grade,_junction points, dead-end mains, laterals, and
at street, alley, or easement intersections as designs may require
a Sewers laid in easements shall have a manhole in each street
crossed by the sewer
b The maximum distance between manholes shall be three hundred
fifty (350) feet for eight (8) inch to forty-eight (48) inch pipe
diameters Spacing for lines of a diameter larger than forty-eight
(48) inches shall be determined on an individual project basis
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c Sewers with the same or approximate flow line elevation shall
intersect each other at a mnety(90) degree angle However, where
a true perpendicular intersection cannot be obtained, and where the
entering sewer intersects the receiving sewer at or about the same
flow line, one (1) or more manholes shall be utilized to maintain a
nummum eighty (80) degree angle at the point of intersection
When the entering sewer is on the upstream side of the manhole,
the mimmum angle between the sewers may be reduced to a forty-
five (45) degree angle,provided
i
1) A distinct flow channel can be maintained within the
manhole when the flowline elevations of the sewers are at,
or within, one (1) pipe diameter of the smaller pipe, or
2) When the flow line elevation of the "entering" pipe is
above the crown of the "primary" sewer and clearance can
be provided between the sewers
d. Criteria for connections to, and utilization of,manholes
1) Where manholes are utilized to facilitate connections
between public sewers, when possible the sewers shall
either match the manhole's flow line or match the elevation
of each other's crown or utilize a manhole drop
2) Connections between public sewers at the manhole shall
adhere to the following criteria when possible
\1W a) The elevation of the crown of the discharging sewer
shall either match the elevation of the crown of the
receiving sewer or be approved as special cases by
the City Engineer
to A standard drop connection is required when the
difference in elevation between discharging sewer
flowline and receiving flowline is greater than trurty
(30) inches.
3) The routing of service connection directly to manholes is
the preferred method of termination Where the flowline
elevation of the existing sanitary sewer is more than ten
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Department of Public Works WASTEWATER COLLECTION SYSTEM
Engineering Division
(10) feet below grade and there is no available stack, and
either
a) The lot to be so connected is a single-family,
owner-occupied, single lot residence connection to
an existing manhole, or
to The lot to be so connected is a single-family,
owner- occupied, single lot residence connecting to
a proposed manhole at the end of a cul-de-sac
4) When routing an approved service connection to a manhole
(see Item 3 above), the wall penetration shall not be greater
than ten (10) inches in diameter and shall be cored and
sealed using approved grout.
5) When routing an approved service connection to a manhole
(see Item 3 above), the connections shall utilize a "drop
(either inside or outside) and shall adhere to the following
criteria
a) The manhole wall penetration shall be a minimum
of ten (10) feet below the manhole nm elevation
and shall not be greater titan ten (10) inches in
diameter,
to The drop shall be six (6) inches in diameter and
}, - shall be constructed of SDR 26 PVC pipe (ATSM D
\,I\ \� The latest all be located c) The drop shall be located forty-five (45) degrees
from the upstream side of the main sewer;
d) An internal drop shall be affixed to the manhole
wall utilizing stainless steel bands and anchor bolts
C) An internal drop shall terminate with a forty-five
(45) degree bend Said forty-five (45) degree bend
shall not extend below the "top of pipe" elevation of
receiving sanitary sewer and,
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t) The wall penetration (core) shall be sealed using a
"grout" as approved by the City Engineer
g) All public sewers shall terminate in a manhole
Clean-outs will not be utilized except at the end of
each service lead.
h) The manhole cover shall have a mimmum diameter
of thirty-two (32) inches
i) All sanitary sewer manholes shall have inflow
protectors.
j) All manhole covers shall have the City of
Fnendswood seal and "SANITARY SEWER"
imprinted on the lid as shown in the City of
Fnendswood Standard Sanitary Sewer Details
k) Commercial pressured discharge lines terminating
in a manhole shall result in the manhole being
protected by either a coating or concrete admixture
to the interior walls of the manhole.
K Lift Stations----
1 Lift station design shall comply with the City of Friendswood Technical
Specifications In addition, it shall be confirmed that a storage volume, in
the design of the wet well, shall equal to one and one-half(1 5) times the
peak design flow to the lift station Add ten (10) percent to account for
volume displaced by pumps.
2. A natural gas standby generator shall be required for all new lift stations
The generator is required to be sized to operate all pumps during an
emergency power failure
3 A startup package for the pumps shall be submitted to the City Engineer
before final acceptance Tlus package should also include a completed
start up log sheet with field and product data See Attachment 1
4 Mimmum site size shall be forty (40) feet by forty (40) feet Smaller sites
that are adjacent to public nghts-of-way and are contiguous to green space
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Engineering Division
or similar land use areas, may be approved when adequate odor control
provisions are provided
5 Pumps shall be sized to operate at optimum efficiency Minimum
acceptable efficiency at the operating point will be sixty (60) percent
unless specifically approved by the City Engineer
6 Operation and maintenance shall be considered in the design of the station
and the location of the station.
7. Wet well working volume shall be sized to allow for the recommended
pump cycle of six(6) minutes for each pump
8 Prior to installation, controls and equipment shall be approved by the City
Engineer
9 Emergency operations shall be considered Provide fittings and a blind
flange that will be readily accessible for emergency bypass pumping
10. The inlet structure shall be designed to minimize turbulence.
11 The velocity in the force main and user pipes shall be less than 8 feet per
second and greater than three (3) feet per second
12 The wet.well shall be sized to provide adequate clearance between the
pumps (refer to manufacturers recommended clearances)
13 `. -A factor of four (4) shall be used for lift station design
14 Amum of two (2) feet of clearance shall be provided between pumps
andb tween pump and wall.
15 Low water levels shall be at least six (6) inches above impeller, or higher
if required by manufacturer
16 Complete immersion of submersible pump mo at low water level is
preferred, if possible }
17 Tie reinforcing steel in lift station bottom to wall reinforcing steel
(includes caisson construction situation)to provide watertight wetwell
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18 Nuts, bolts, chains, and all other metal components within wetwell shall be
stainless steel,not carbon steel
19 Vent pipe shall be eight (8) inch mimmum diameter equipped with odor
control system
20 The following Hazen-Williams Coefficient shall be used for various pipe
types ,I s G •`R D A 4�
• V\
PVC New C = 160
10-year C = 140 \O
s
DIP New C=14-0
10-year C = 100
21 Provide board fence (either cedar or heart redwood) with steel posts set in
concrete Fence shall be at least eight(8) feet high
22 Entrance drive to be at least fourteen (14) feet wide concrete pavement
Provide enough room to park vehicles inside lift station site
23. Indicate method of drainage of site on site plan Internal drainage, sheet
flow and valley gutter driveways are acceptable Drain to street or storm
sewer,never onto adjacent private property
24 Locate the control panel and wetwell hatch above the One Hundred (100)
Year Flood Plain Call out the One Hundred (100) Year Flood Plain
elevation on the plans.
25 Stainless steel guide rails (or other pump removal method that avoids
entering wetwell) are required for submersible pumps
26 A tee, plug valve (or gate valve), and blind flange assembly is required on
the force main on the downstream side of the discharge valves and header
This is required so truck-mounted pumps can bypass the lift station pumps
`N%arid piping while maintenance work is being done on lift station
27 Bedding for PVC force main shall be bank sand
28 PVC force mains shall be AWWA C-900
29 Ductile Iron Pipe (DIP) force mains shall be bedded in bank sand and
polyethylene wrapped
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30 When calculating headloss in force main and piping, use of K factors on
fittings,with the Hazen-Williams formula, is preferred
31 Backfill structural excavations (wetwell, etc)with cement-stabilized sand
32 Lift station site plans shall be submitted m es of 1 inch = 5 feet or 1
inch= l0 feet iq Q �A0
33. Provide a protective coating or concrete additive to the interior walls of
the wetwell. The City Engineer shall approve coating or additive used
34 Lift station shall be equipped with a telemetry system, approved by the
City Engineer, and shall be compatible with existing systems in the City
A bubbler system shall be installed and connected to telemetry system to
monitor status of lift station
35 Power supply to lift station shall be three (3) phase and four hundred
eighty(480) volts where possible
36. A system of floats shall be provided to control pumps.
37 A pressure gauge suitable for application shall be installed on each
discharge pipe
38 A 1 inch mimmum water service egwpped with backflow prevention shall
be provided at the lift station site
L. GreaseT;a#/Grease Interceptors
Gravity grease interceptors shall be designed to remove grease from effluent and
shall be sized in accordance with this section Gravity grease interceptors shall
also be designed to retain grease until accumulations can be removed by pumping
the interceptor
1 Each grease trap/grease interceptor shall be installed in such a manner that
it can be easily accessible for inspection, clearing, and removal of the
intercepted grease All permitting construction, design, and inspection
activities must be completed in accordance with the manufacturer's
instructions and the International Plumbing Code Additionally, the
following specifications must be incorporated into grease trap design
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Engineering Division
a The grease trap/grease interceptor shall be constructed with a
mrmmum of two baffles
b Grease traps/grease interceptors are to be installed at a minimum
distance of 10 feet from sinks and dishwashers to allow for
adequate cooling of the wastewater Water temperatures must be
less titan one hundred twenty(120) ees prior to entering grease
trap.
w!
C. All grease bearing waste- streams should be routed through an
appropriate grease traps/grease interceptor, including three-
compartment sinks, pot/pan sinks, soup kettles, hand-washing
sinks, dishwashers, mop sinks, and floor drains. �IJotable
Exceptions: Drams that receive "clear waste" only, such as from
ice machines, condensate from coils, and drink stations, may be
plumbed to the sanitary system without passing through the grease
trap. 1
d All exterior or recessed grease traps/grease interceptors are to be
installed with an effluent sampling well
2 Requirements for traps are as follows
a Equipment and facilities of a type and capacity approved by
approving authority shall be provided -
S'�Z
The trap shall be located in a manner that provides ready and easy
\ \ —— accessibility for cleaning and inspection
\ \ The trap shall be maintained in effective operating condition so as
to meet an effluent oil/grease test parameter of less than one
hundred(100)mg/1
d Traps shall conform to a minimum detention time of thirty (30)
"111 ; minutes and a maximum of sixty(60)minutes.
e The minimum size shall be one thousand(1,000) gallons or greater
as determined by the design engineer
1 05 APPURTENANCES–Reserved
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106 SUBMITTALS
A Preliminary design—submit the following for review and comment
1 Copies of any documents which grant approval of exceptions to the City's
Design Criteria
2 Design calculations for line sizes and grades
3 Contour map for overall area
4 Plan and profile sheets showing proposed improvements (City projects
only).
5 Geotechrucal soils report for the project(City projects only)
B. Final design—submit the following for approval:
1 Final documents of the above plus plan and profile sheets and
Geotechrncal soils reports for non-City projects
2 Review prints
3 Original drawings
1 07 QUALITY ASSURANCE
Prepare calculations and construction drawings under the supervision of a Professional
Engineer licensed to practice engineering in the State of Texas and trained in the
disciplines required by the drawings The final construction drawings must be sealed,
signed, and dated by the Professional Engineer licensed to practice engineering in the
State of Texas, and shall be responsible for the development of the drawings along with
their firm's registration information
2.0 EXECUTION X A
201 RESEARCH REQUIR E1 - - - r
A Research existing utility and rights-of-way information
B Verify that no restrictions exist that will deny approval of the project concept
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202 DESIGN ANALYSIS
Calculations of design flows for overall development project
203 DRAWINGS
Dravnngs shall include layout sheets tenth contours, plan and profile sheets, and detail
sheets for special items and treatment plants.
_ 1
IN
w
i
i
n
FOUNUEU
895
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
SECTION III
WATER LINE DISTRIBUTION SYSTEM
DESIGN REQUIREMENTS
1.0 GENERAL
A Should any portion of this Section conflict with the Subdivision Ordinance or the
Zoning Ordinance, the more stringent of the latter two(2) shall govern
B The City Engineer shall have the final interpretation of any provisions in dus
Design Criteria Manual
C The City Engineer has the right to issue administrative orders or design criteria
modifications for just cause related to any provisions or conditions in fliis Design
Criteria Manual
101 CHAPTERINCLUDES:
Criteria for the design of water lines
102 REFERENCES
A Texas Commission on Environmental Quality (TCEQ), Water Utilities Dnvnsi
"Rules-and-Regulattons for Public Water Systems," latest revision
B American Water Works Association(AWWA) �S
C National Sanitation Foundation(NSF)
FOUNDED
D Texas Department of Health 1 895
E Texas State Board of Insurance
F City of Friendswood Standard Details and Technical Specifications, latest
version These can be downloaded from www.fnendswood com/publications
103 DEFINITIONS
Water Line — Closed conduits designed to distribute potable water for human
consumption to various areas and provide fire protection Line size and fire protection
accessory locations are dependent on distance from primary source and quantity of
demand
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104 DESIGN REQUIREMENTS
A Easements for water lines
1 Lines shall be located within street nghts-of-way, permanent access
easements with overlapping public utility easements, easements adjacent
to street nghts-of way or recorded water line easements
2 When outside of a public street rights-of-way or permanent access
easement with an overlapping public utility easement, easements must be
dedicated and restricted for water lines only.
3 When possible, easements shall be contiguous with public nghts-of-way
4 Except for side lot easements, water line easements shall be contiguous to
a paved access
5 For water lines twelve (12) inches or smaller located outside of street
nghts-of-way,mimmum width of easement shall be ten(10) feet
6 For water lines fourteen (14) inches or larger located outside of street
nghts-of-way,the mrmmum width of easement shall be fifteen(15) feet.
7 For water-in ams located less than five (5) feet from the rights-of-way line,
the outside edge of a water line easement shall be located from the rights-
of-way line as follows
Twelve (12) inch and smaller pipe—five (5) feet
Fourteen(14) inch and larger pipe—ten(10) feet
8. Water lines along State nghts-of-way shall be installed outside of the
nghts-of-way whenever possible and in a separate ten (10) foot nummum
contiguous easement.
9 No back lot easements shall be allowed for the installation of water lines,
unless specifically approved by the City
10 Commercial developments requiring on-site fire hydrants must provide a
nummum fifteen (15) foot water line easement for the water line and fire
hydrant
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11 In new developments, water lines shall be centered in water line
easements
12 When using side lot easements, such easements shall be a mrmmum of ten
(10) feet in width, located on one (1) lot or centered between lots If
centered between lots, the water line may be centered within the five (5)
foot easement on one (1) lot, or centered in the full ten(10) foot easement
13 Location of water lines in an easement not adjoining a public rights-of-
way shall be prolubited, except as specifically approved by the City
Engineer When approved, these water mains will be centered in a fifteen
(15) foot wide exclusive easement restricted to water only
B Location of water fines.
1 Locate wittun street rights-of-way
2 Location of water lines within an easement — locate water lines in the
center of a ten (10) foot nummum width dedicated waterline easement
Within a commercial development, center water lines widen a fifteen(15)
foot easement Obtain approval for lines to be located in wider or multi-
use easements
When-a_water main is placed parallel to another utility line at or near the
—sane grade, it shall have a minimum of nine (9) feet of horizontal
separation When the other utility is a samtay_sewerand a minimum of
nine (9) feet cannot be maintained, the sanitary sewer must be constructed
of pressure type pipe with watertight _joints as used in water marn
construction and the clearances must be defined as in the following
sections or as specifically approved by the City Engineer When/ water
main crosses a utility other titan sanitary sewer, a nummum cif six (6)
inches of clearance must be maintained, and the water main shall have one
(1) _joint of pipe, a minimum of eighteen (18) feet long, centered on the
other utility
4 When water mans and sanitary sewers are installed, they shall be installed
no closer to each other than nine (9) feet in all directions, and parallel lines
must be installed in separate trenches Where the nine (9) foot separation
distance cannot be aclueved,the following procedures shall be used
a Where a sanitary sewer parallels the water man, the sanitary sewer
shall be constructed of ductile iron, or PVC pipe meeting AWWA
specifications, having a minimum working pressure rating of one
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
hundred fifty(150) psi or greater, and equipped with pressure type
_joints The water mains and sanitary sewer shall be separated by a
nummum vertical distance of two (2) feet, and a nummum
horizontal distance of four (4) feet, measured between the nearest
outside diameters of the pipes, and the water main shall be located
above the sewer.
b Where a sanitary sewer crosses the water main, and that portion of
the sewer is constructed within nine (9) feet of the water, as
described above, the water line may be placed no closer than six
/� 1 j4 (6) inches from the sewer. The separation distance must be
measured between the nearest outside pipe diameters and the water
line shall be located at a higher elevation than the sewer,\and one
(1)_joint [a minimum of eighteen (18) feet long) ]of the n pipe
must be centered on the existing line
C. Water line size.
1 Six (6) inch lines may be used on dead-end lines within cul-de-sacs, or if
the line is less than one thousand (1,000) feet in length and interconnected
between two (2) lines which are eight (8) inches in size or larger The
maximum number of fire hydrants on any length of six (6) inch line is one
(1)
2 Eight (8) inch lines may be used for lines over one thousand (1,000) feet
long, or when two (2) or more fire hydrants are required.
3 Twelve (12) inch and larger lines — line length, usage, etc, to be
determined by a Professional Engineer of record licensed to practice
engineering in the State of Texas, and approved by the City Engineer
D Dead-end lines
1 Dead-end lines within public nghts-of-way
a On permanent dead-end lines, other than on cul-de-sacs, the
dimension of the line shall be six (6) inches and shall not exceed
more than five hundred (500) feet in length from the closest
interconnecting main line In addition, it shall terminate with afire
hydrant
b On permanent dead-end lines on cul-de-sacs it will be required to
reduce the pipe size successively It is required to carry an eight
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
(8) inch pipe to the next to last hydrant, then from that point use a
six (6) inch pipe to the line's end It is required to place the last
service as near as possible to the end, and install a fire hydrant or
two (2) inch blow-off at the end of the six (6) inch line The
maximum length of dus reduced line size configuration shall not
exceed eight hundred(800) feet
2 Dead-end lines with one (1) on-site fire hydrant
a. Six (6) inch lines may be used for lengths less than two hundred
(200) feet provided domestic service is taken from the end of the
line.
b Eight (8) inch lines may be used for lengths greater than two
hundred (200) feet but less than five hundred (500) feet, provided
domestic service is taken from the end of the line
E Depth of cover
1 Fourteen (14) inch and smaller mains shall have a mimmum cover of four
(4) feet from top of curb For open ditch roadway sections, lines fourteen
(14) inches and smaller shall be installed at least three (3) feet below the
ultimate flowlme of the ditch or six (6) feet below natural ground at the
rights-of-way line, whichever is deeper and maintain the elevation
throughout that section of line
2 Sixteen (16) inch and larger mains shall have nummum cover of five (5)
feet from top of curb For open ditch roadway sections, lines sixteen(16)
inches and larger shall be installed at least three (3) feet below the flow
line of the ditch or seven (7) feet below natural ground at the rights-of-
way line, whichever is deeper and maintain the elevation throughout that
section of line
3 Changes in grade, to clear other utilities or underground features, may be
'Ntnade by deflecting pipe joints. The maximum designed deflection shall
be one-half (0.5) of the manufacturer's allowable deflection If a depth
greater than eight(8) feet to the top of the pipe is required, a welded steel
section shall be used The standard depth of cover is to be maintained
above the water main, and the grade change shall be made using the
welded steel section The installation of fittings for vertical deflections, or
changes in elevation, shall not be allowed except with specific approval by
the City Engineer
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F Water line crossings
1 Public and private utility crossings other than sanitary sewer
Where a water line crosses another utility other than a sanitary sewer, a
nummum of six (6) inches of clearance must be maintained between the
outside wall of the water line and the outside wall of the utility being
crossed / }
2. Stream and Ditch Crossings '' 0��
a Elevated Crossings. -
1) All water lines shall be steel or restrained-joint metallic
pipe, and shall extend a mimmum of fifteen (15) feet
beyond the last bend or to the rights-of-way line, whichever
is greater
2) Elevated crossings are preferred rather than underground
crossings
Use a separate elevated supporting structure for sixteen
(16) inch and larger water lines, unless otherwise approved
by the City Engineer The structureshall be located a
�-� nummum of ten (10) feet from any other existing or
proposed structure
Support water lines on existing or proposed bridges The
following criteria may be used for fourteen (14) inch and
smaller lines when approved in advance by the City
Engineer
a) Adequate structural capacity sh>R"c required
to Sufficient clearance above the bent cap elevation
shall be required for installation under a bridge
5) Design elevated crossings with the elevation of the bottom
of the water line above the low chord of the nearest
adjacent bridge, or a mimmum of one and one-half (1 5)
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Engineering Division
feet above the One Hundred (100) Year Flood Plain
elevation, whichever is lugher
6) Extend pipe from nghts-of-way to nghts-of-way for
crossings
7) Provide sufficient span length to accommodate for the cross
section of any future widening of the stream or ditch, if
available.
8) Support the line on columns spaced to accommodate the
structural capacity of the pipe, considering deflection and
loading.
9) Base column support design on soil capacity, spacing,
loading, and structural requirements
G Underground crossings
1 Provide a mimmum three (3) foot clearance above the top of the pipe to
the ultimate flow line of the ditch
2 Provide sufficient length to exceed the ultimate future development of the
stream or ditch
3 All water lines shall be steel or restrained point pipe and shall extend a
nummum of fifteen (15) feet beyond the last bend or to the nghts-of-way,
whichever is greater. In addition, the water lines shall have valves located
on both sides of the crossing
H TxDOT lughway and county road crossings
1 Extend carrier pipe from nghts-of-way to rights-of-way
2 *NNUse welded steel pipe, or restrained point pipe in steel casing, under
existing and future roadways. The pipe shall be installed from a point
fifteen (15) feet outside of the service road, or outside of pavement toward
the nghts-of-way, to a similar point on the other side of the lughway
across the nghts-of-way For lughway or roadway crossings with open
ditch sections, extend the casing from nghts-of-way to nghts-of-way
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
3 Highway and county road crossings shall be constructed in conformance
with the applicable requirements of where the line is located (i e Texas
Department of Transportation, Galveston County or Huns County)
4 When additional nghts-of-way has been acquired, or will be required for
future widening, the casing where required, shill be carried to within ten
(10) feet of each future rights-of-way line
I Street crossings !9 DR
1. All water mains and sprinkler line crossings, under major thoroughfare
boulevards, shall be encased using a minimum SDR rated or PVC pipe as
required by the City's construction detail for "Water Main Encasement "
Welded steel pipe may be substituted on street crossings, when
specifically approved by the City Engineer.
2 Crossings under existing concrete streets, other trim major thoroughfares,
shall be constructed by boring and jacking PVC and SDR rated pipe shall
be jacked into place with equipment designed for that purpose Water
may be used to facilitate boring and jacking operations. Jetting the pipe
main into place shall not be permitted When conditions exist that warrant
an open cut across the existing street, approval by the City Engineer shall
specifically be required
3 All open cut installations, under existing or proposed streets, shall be
backfilled as required by City's Standard Details.
4 All street crossings shall be constructed in accordance with construction
plans approved by the City All street crossings shall be inspected by a
City Project Manager, and shall meet the requirements of these standards
J Oil and gas pipeline crossings
Metallic pipe shall not be used when crossing oil or gas transmission lines, unless
a properly designed cathodic system is approved by the City Engineer and it is
properly installed. Other pipe may be used, regardless of depth, subject to
approval by the City Engineer There must be a mimmum of two (2) feet of
separation between the pipeline and waterline
K On-site fire loops wnttun commercial and multi-family developments
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
1 For commercial and multi-family developments, requiring on-site fire
hydrants, the following requirements shall be complied with to allow
maintenance and future repair operations
a Placement of structures or equipment pads within the easement
shall not be permitted
b Provide a ten (10) foot wide longitudinal pavement_joint along the
easement lines where the water line is located under a driveway,
paved parking, or street pavement.
L Additional requirements.
1 The carrier line shall extend a minimum of one (1) foot beyond the end of
the casing to allow flanged joints to be connected.
2 For welded steel bends, extend steel pipe a minimum of five (5) feet
beyond the bend
M Auger(bore) construction
1 Use the following general criteria for establishing auger or bore sections
a Auger or bore sections shall be clearly shown on drawings
b Improved streets — use auger construction to cross the street
`W \� regardless of surface Auger length shall be calculated utilizing the
\ —— — roadway width, at the proposed bore location, plus an additional
five (5) feet to either side of the roadway, as applicable
Sidewalks—when the water line crosses under a sidewalk, four (4)
feet or more in width and in good condition, the sidewalk shall be
bored and_jacked or the sidewalk shall be removed and replaced to
the City of Fnendswood Standard Details requirements, whichever
is most cost effective Bore and_jack length shall be at least the
width of the sidewalk The proposed type. of construction shall be
noted on the plans
d Bore Pits — Bore pits shall be at least three (3) feet from back of
curb and shall be at least five (5) feet from the back of curb on a
boulevard or major thoroughfare All bore pits shall be shored in
accordance with OSHA requirements Bore pits and/or receiving
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
pits to be located in a street or driveway paving, shall be shown on
the plans
N Water quality—overall system layout
1 Circulation and fluslung — The layout of the overall water distribution
system shall provide the maximum circulation of water to prevent future
problems of odor,taste, or color due to stagnant water
tea. t, Provide a source of fresh water at each end, orm ultiple points of
Y a subdivision. Provide ways to create circulation, and valves and
fire hydrants shall be located to allow simple fluslung of all lines
b Dead-ends shall be avoided whenever possible, if absolutely
necessary, dead-ends shall be isolated with a line valve, kept as
short as possible, and equipped with a fire hydrant near the line's
end
C. Where stubs are provided for future extensions, isolate the stub
with a valve, and place one (1) full pipe _joint beyond the valve,
plug end of pipes Service connections are to not be connected to
�,r► the stub
d Water mains shall be looped unless physically impossible
e All materials which come in contact with public dunking water in
any stage shall conform to ANSI/NSF Standard 60.
f Layout and size of all water mains shall be consistent with the
overall layout and phasing plan of the City's water system The
overall water system shall be designed to maintain adequate
pressure throughout the system
g In an unavoidable permanent dead-end situation, reduce the sizes
of pipe successively Carry an eight (8) inch pipe to the next to
last fire hydrant and use a six (6) inch PVC to the end of the line
Provide a fire hydrant or two (2) inch blow-off at the end of the
main
O Clearance of waterline from other utilities (New water lines constructed near
sanitary sewers and force mains)
1 New water lines parallel to sanitary sewers and force mains
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
a Water lines shall be located a nummum of nine (9) feet
horizontally, outside wall to outside wall, when parallel to sanitary
sewers or force mains Use the following procedure when nine (9)
feet of separation cannot be aclueved
When a new water line is to parallel to an existing sanitary sewer
force main and/or gravity sanitary sewer, and the nine (9) foot
nummum separation distance cannot be maintained, the existing
sanitary sewer shall be replaced with lined ductile iron or PVC
Gpipe meeting ASTM specifications In addition, the waterline shall
Af have a minimum working pressure rating of one hundred fifty
(150) psi or greater, and be equipped with pressure type _joints
The water lines and sanitary sewer shall be separated as per the
design requirements of TCEQ, at a mimmum horizontal distance of
four (4) feet measured between the nearest outside walls of the
pipe. In all cases,the water line shall be located above the sanitary
sewer. When a water main crosses a utility other than sanitary
sewer, a nummum of six (6) inches of clearance must be
maintained, and the water main shall have one (1)joint of pipe [a
nummum eighteen (18) feet long] centered along the other utility
line
SS _
; 1 � b---Where a sanitary sewer crosses a water min and that portion of
the sanitary sewer within time (9) feet of the water is constructed
ry�Z as described in Section 290 44(e) of the TCEQ Rules and
Regulations, the water line may be placed no closer tttan six (6)
inches from the sewer The separation distance must be measured
between the nearest outside pipe diameters The water line shall be
\ located at a higher elevation than the sanitary sewer wherever
possible and one (1)joint of the new pipe [a mimmum of eighteen
(18) feet long] shall be centered on the existing line
2 When water lines are installed in areas which have existing sanitary
sewers, every effort should be made to maintain nine (9) feet of separation
between the outside pipe diameters of the two (2) lines Where thus
separation cannot be aclueved because of local conditions, which must be
fully documented in any planning material submitted, the following
spacing's shall be observed
a Where a new water line is to cross or be installed parallel with an
existing sanitary sewer and the sanitary sewer is constructed as
described in Section 290 44(e) of the TCEQ Rules and
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
Regulations, the separation distances specified in those rules shall
apply as though the sanitary sewer was new
b Where a new water line is to be installed parallel to an existing
clay, truss, or concrete gravity sanitary sewer showing no evidence
of leakage vertically and horizontally for a distance of four (4) feet,
the sanitary sewer is not to be disturbed. Should excavation for the
water line produce evidence that the sanitary sewer is leaking, the
sanitary sewer shall be repaired.
c *Where a new water line is to cross an existing clay, truss, or
concrete gravity sewer showing no evidence of leakage vertically
or horizontally for a distance of four (4) feet, the sewer is of to be
disturbed if the water line is installed at least twenty-f (24)
inches above the existing sanitary sewer. One (1) full joint of the
water line [at least eighteen (18) feet long] shall be centered over
the sanitary sewer crossing, so as to provide maximum protection
against contamination
d. Where there is an existing clay, truss or concrete sanitary sewer
pipe showing no evidence of leakage, and because of physical
_.limitations shall remain at a lugher elevation than the proposed
intersecting water line, an exception to the nine (9) foot
requirement may be granted as long as the water line is inserted in
- _ a_joint of pressure type carrier pipe at least eight (8) feet and two
�Z (2) nominal sizes larger titan the waterline The carrier pipe shall
\� be centered on the sanitary sewer crossing and both ends sealed
\ \ --- with cement grout In lieu of thus procedure, that portion of the
sanitary sewer within nine (9) feet of the water line may be
\
\*as replaced with cast iron or ductile iron pipe with water-tight_joints
described in Section 290.44(e) of the TCEQ Rules and
Regulations, above
3 Sanitary sewer manholes — provide a minimum nine (9) foot horizontal
clearance from outside wall of existing or proposed sanitary sewer
manholes, unless manholes and connecting sanitary sewers can be made
water-tight and tested for no leakage If a nine (9) foot clearance cannot
be obtained, the water line may be located closer to a manhole when prior
approval has been obtained from the City Engineer using one (1) of the
procedures below, however in no case shall the clearance be less than four
(4) feet
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Engineering Division
a A steel water line may be encased in a steel carrier pipe Open cut
and backfill with compacted cement-stabilized sand
b The water line may be augured past the manhole, as long as one (1)
- twenty (20) foot section of C-900 PVC pipe [one hundred fifty
(150) psi], is installed centered on the existing sanitary sewer
manhole and a bentomte/clay mi e is utilized during the
auguring process \ S
i� $ nc.!�►
4 Fire hydrants shall not be inst a e ve �allyor horizontally within nine
(9) feet of sanitary sewer mains, service leads, and force mains regardless
of construction.
105 APPURTENANCES:
A Valves.
1 Shall be set at maximum distances along water lines as follows
a. Six (6) inch through fourteen (14) inch — one thousand (1,000)
feet
b Sixteen (16) inch through twenty(20) inch—two thousand (2,000)
feet
c The total number of valves at any intersection shall equal the total
number of lines leading out from the intersection point minus one
(1), three (3) valves for a cross, and two (2) valves for a tee, unless
otherwise specified
FouNOEo
B Valve Typ7 r 1895
1 Valve types (all valves shall open counterclockwise and have mechanical
_joints)
a Six(6) inch through fourteen(14)inch—gate valves
b Sixteen(16) inch through twenty(20)inch—butterfly valves
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Engineering Division
C Valve Location
1 All water lines shall be valved within the street nghts-of-way Valves
shall not be placed under or within two (2) feet of ultimate pavement,
except as specifically approved by the City Engineer
2 Valves shall be located on the projection of intersecting street nghts-of-
way lines, or at the curb return adjoining a paved street across the main
Tapping Sleeves and Valves are excluded from this requirement
3. Fire hydrants shall be isolated from the service line with a valve located at
the fire hydrant branch Tlus valve shall not be located in the slope or
flowline of ditches on open ditch streets
4 Intermediate valves, not located on the projection line of the nghts-o -way
line, shall be located on lot lines or five (5) feet from the fire hydt�nts
The valves are not set in driveways or sidewalks. \\!
r'�
5 Locate valves a mimmum of nine (9) feet horizontally from sanitary sewer
crossings
D Fire Hydrants.
1 Spacing.
a Single Family Residential Development— five hundred (500) foot
spacing
b Commercial, Multi-Faintly Developments and Multiple Single-
Family Dwellings — three hundred (300) foot spacing, and at all
street intersections.
2 Location in or along street nghts-of-way
Fire hydrants shall be located at street intersections where possible,
but in any case,not more than the spacing noted in In and lb
b Locate fire hydrants at P C.'s of the intersection curb radius, three
(3) feet belund the existing curb or location of a future curb
c On all TxDOT highways, county roads and open-ditch streets, fire
hydrants shall be set within three (3) feet of rights-of-way lines
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
Fire hydrants lead valves shall not be located in the slopes or
flowlmes of ditches
d Fire hydrants located between rights-of-way intersections should
be set at a lot line, however, this location may be adjusted five (5)
feet either way to miss driveways or other obstructions, in which
case the fire hydrant should not be closer than three (3) feet from
curbed driveways or five (5) feet from non-curbed driveways
C. Fire hydrants shall not be installed within nine (9) feet of a sanitary
Gsewer system under any condition.
3 Location of fire hydrants outside the street rights-of-way 'LN
a. The City Fire Marshal will establish and approve the location of
fire hydrants in apartment complexes, and platted private street
developments wittun the City
b Locate fire hydrants in protected, easily accessible areas behind
curb lines
dFor fire hydrants, which are located adjacent to water lines
constructed in ten (10) foot wide waterline easements, the fire
i - hydrant shall be centered in a nummum ten (10) foot by ten (10)
- - - _ foot separate easement
d For commercial and multi-family developments, provide isolation
valves at each end of fire loops regmring on-site fire hydrants
E 4 Fire F1oVequirements for Buildings
a The nunimum fire flow requirements for one (1) and two (2)
family dwellings, having a fire-flow calculation area which does
not exceed three thousand six hundred(3,600) square feet, shall be
one thousand (1,000) gallons per minute Fire flow and flow
duration for dwellings having a fire-flow calculation area in excess
of three thousand six hundred (3,600) square feet shall not be less
than that specified in Exhibit A-Table B 105 1 of the International
Building Code, as adopted and amended by ordinance
5 Fire hydrants should be audited for flow and pressure, and painted per
City Technical Specifications
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
E Fittings
1 All fittings shall be identified and described on the construction plans
2 Fittings are not permitted in fire hydrant leads, except as specifically
approved by the City Engineer.
3 Waterline fittings shall be mechanical points only. Push-on points maybe
used at special locations, if specifically approved by the City Engineer
4. All plugs shall be provided with retention clamps.
5 Polyethylene tube encasement shall conform to the mimmum requirements
of "Polyethylene Encasement for Gray and Ductile Cast-Iron Piping for
Water and Other Liquids", ANSI/AWWA C105, current revision Soils
within the project shall be tested in accordance with Appendix A of
ANSI/AWWA C105 to adequately determine the requirements for
encasement
6 Concrete thrust blocking shall be required on all bends, tees, plugs and
combinations thereof
7 All fittings and fire hydrants shall be tied together with three-quarter
(0 75) inch stainless steel all-threads and I-bolts or approved equal (i e.,
Mega Lug Fittings)
F Water main service
1 Wain service for lines in or along street rights-of-way
a Meters two (2) inch and smaller—shall be located to rights-of-way,
water line easements, or to a mtmmum five (5) foot x five (5) foot
separate water meter easement on private property.
b Meters three (3 inches and larger—shall be located at the property
line or to a mtmmum ten (10) foot x twenty (20) foot separate
water meter easement if necessary
c Meters shall be located in areas with easy access and protected
from traffic and adjacent to nghts-of-way whenever possible
d Meters shall not be located in areas enclosed by fences
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
e Separate tap and service leads shall be designed for each meter
f Meters larger than two (2) inches must have a bypass assembly and
coupling for easy change out Contact the Public Works
Department for additional requirements
2 For proposed apartments or town homes in private street developments,
provide one (1) master meter sized for the entire development Exceptions
may be granted by the City Engineer for unusual circumstances If an
exception is approved, multiple meters shall not be interconnected
3. All sprinkler and irrigation lines shall be equipped with a backflow
prevention device according to its application as required by current
TCEQ regulations. The backflow assembly shall be located after the
water meter for an irrigation system, and in a vault near the building for a
sprinkler system. A certified technician shall test applicable backflow
prevention assemblies annually, and submit the results to the City
106 SUBMITTALS.
A General—Conform to the following submittal requirements in addition to those of
general procedure of the City of Fnendswood
B Water Line Sizes- Submit justification, calculations, and locations for proposed
six (6) inch lines, and for lines twelve (12) inch and larger, for approval by the
City Engineer, unless water line sizes are provided by the City in advance
C. Valves — Submit information for approval by the City Engineer with justification
and locations for the use of sixteen (16) inch and twenty (20) inch gate valves
proposed as substitutes for butterfly valves
D Water Meter Service
1 A permit shall be obtained from the Building Division for meter services
and metered sprinkler connections prior to construction
2 Requests for more than one (1) service meter on a proposed private street,
or a multi-family development, shall be submitted to the Department of
Public Works
E Elevated stream or ditch crossings — Submit design calculations for support
columns and column spacing
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
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F Master Development Plan — For multiple-phase developments, submit a master
development plan along with construction plans
G Backflow Prevention — All imgatton and sprinklers must be equipped with
backflow prevention devices per current TCEQ regulations
H A double check backflow prevention assembly is required for three (3) inch and
larger lines N 1 iA r
1 07 QUALITY ASSURANCE
Prepare calculations and construction drawings under the supervision of a Professional
Engineer licensed to practice engineering in the State of Texas and trained in the
disciplines required by the drawings. The final construction drawings must be sealed,
signed, and dated by the Professional Engineer licensed to practice engineering in the
State of Texas, shall be responsible for the development of the drawings along with their
firm's registration information
2.0 EXECUTION
201 RESEARCH REQUIREMENTS
A Research existing utility and rights-of-way information.
B Verify thatno-restrictions exist that will deny approval of the project concept
202 DESIGN ANALYSIS
A Water line sizes— Prepare narrative_justification and calculations for proposed six
(6) inch lines, and for lines twelve (12) inches and larger, unless sizing is
provided by the City in advance
B Elevated stream or Ditch Crossings — Prepare design calculations for support
columns and column spacing.
203 DRAWINGS
A General Conform to the following drawing requirements, in addition to those
identified within the City's Standard Water Line Details, the City's Technical
Specifications, and within"Section I—Graphuc Requirements"of dus manual
B Appurtenances—Identify, describe, and enclose in rectangular box on drawings
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Department of Public Works WATER LINE DISTRIBUTION SYSTEM
Engineering Division
1 Valves
a Designate six (6) inch through twelve (12) inch gate valves with
box as GV&B
b Provide complete description and size for other valves
2 Water meters, service leads, and metered sprinkler connections
*N1.
a. Show the location of service line tees, tapping sleeve valves, valve
boxes, and temporary plugs to be installed to serve future three (3)
inch or larger meters.
b Develop plan and profile sheets for four (4) inch and larger leads,
and connections that cross public nghts-of-way or other utilities
C. Construction features.
t,,
Show all special construction features required to complete the project, in a safe,
convenient, and economical manner
D Auger Construction
1 If the construction is predominately open cut, all portions of the street that
must be augured shall be clearly shown on drawings by location and
length Include designation of sections at trees with six (6) inches or
larger diameters, located within ten(10) feet of a water line
2 Curbs — Include a requirement on drawings for construction of ADA
ramps at street intersections where curbs are to be removed, or are
damaged by water line construction Conform to the City's Standard
Details for ADA ramps
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Department of Public Works STREEr PAVING
Engineering Division
SECTION IV
STREET PAVING DESIGN REQUIREMENTS
1.0 GENERAL
A Should any portion of this Section conflict with the Subdivision Ordinance or the
Zoning Ordinance, the more stringent of the latter two(2) shall govern
B The City Engineer shall have the final interpretation of any provisions in dus
Design Criteria Manual.
C. The City Engineer has the right to issue administrative orders or design criteria
modifications for dust cause related to any provisions or conditions in flus Design
Criteria Manual
1 01 CHAPTER INCLUDES.
Geometric design guidelines for streets, criteria for street paving, and standard paving
notes for drawing call outs
102 REFERENCES
A ASHTO—American Association of State Highway and Transportation Officials
B ASTM —American Society for Testing Materials
C ACI—American Concrete Institute
D. TMUTCD —Texas Manual on Uniform Traffic Control Devices
E City of Fnendswood Standard Details and Technical Specifications, latest
version These can be downloaded fro'mi www.fnendswood com/publications
103 DEFINITION J � Y
A Geotechrucal Engineer — An engineer certified by the Amencan Association for
Laboratory Accreditation(A21,A).
B HMAC—Hot Mix Asphaltic Concrete
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Department of Public Works STREEr PAVING
Engineering Division
C Curb-and-Gutter Streets — Full-width reinforced concrete pavement or asphaltic
pavement with curbs Curb-and-gutter streets require inlets and underground
storm sewers
D Open-Ditch Streets — Full-width reinforced concrete pavement or asphaltic
pavement with ope J �pen-ditc - do not regwre underground storm
sewers, howeye , g-�IthQSli�l bed' _pzn mmodate the storm water
Av y..,
runoff �� N D S 4�,
104 DESIGN REQUIREMENTS
The following design requirements are applicable to all street pavement constructed within
nghts-of-way
A. General
1 All paving and construction plans for all streets shall be approved by the
City Engineer
2 Street design shall conform to all applicable planning tools, such as the
Texas Manual on Uniform Traffic Control Devices, mayor thoroughfare
plans, master plans, etc Other considerations for design shall include
street function, street capacity, service levels, traffic safety, pedestrian
safety, and utility locations These additional considerations may affect
the minimum requirements set forth herein Refer to the City of
Fnendswood Mayor Thoroughfare Plan for streets requiring additional
considerations
3 Q4 shall conform to the City of Friendswood Standard Details and
Te.7 pecnfications. /
The use of individual pavers are not allowed in the City of Friendswood
nghts-of-way The only exception for use of individual pavers in the
\\rights-or-way is for sidewalks in the Downtown District Stamped
concrete is allowed in the City of Friendswood rights-of-way
5 No asphalt turnouts are allowed in the City of Fnendswood nghts-of-way
6 Concrete mix design shall conform to the City of Friendswood Technical
Specifications
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Department of Public Works STREEr PAVING
Engineering Division
B Mimmum Width Requirements for Concrete Paving
1 Curb-and-gutter concrete and HMAC streets for low-density residential
developments such as SFR, MFR-L, and MFR-GHD twenty-eight (28)
feet from back of curb to the back of curb
2 Pavement for open-ditch streets used for only SFR residential
developments with nummum one hundred twenty (120) foot wide lots
twenty-six(26) feet from edge of pavement to edge of pavement
3 Streets for medium to high density residential, commercial, and collector
streets. forty-one (41) feet from back of curb to back of curb, or from
edge of pavement to edge of pavement
4 Streets for major thoroughfares or boulevards: two (2) divided pavement
sections of twenty-five (25) feet from back of curb to back of curb [Four
(4) lane divided roadway], or two (2) pavement sections durty-four (34)
feet from back of curb to back of curb [six(6) lane divided].
5 Radius for cul-de-sac pavement on any street shall be a mimmum of fifty
(50) feet, measured from the face of curb. Radius of nghts-of-way for cul-
de-sacs shall be ten(10) feet greater than the cul-de-sac pavement, but not
less than sixty(60) feet
C Minimum Thickness and Reinforcement Requirements for Concrete and HMAC
Pavement
The following requirements shall be the minimum allowable Pavement duckness
and reinforcement, not less than the mimmum requirements, shall be designed by
a Professional Engineer licensed to practice engineering in the State of Texas and
who is responsible for the project. The design shall be based on a current soils
analysis and recommendations conducted by a qualified geotechrucal engineer
1 For pavement widths twenty-eight (28) feet from back of curb to back of
curb or twenty-six(26) feet from edge of pavement t Ae of pavement
a Mimmum concrete slab thickness shall be six (6) inches with a fc
equal to three thousand (3,000) psi, and reinforcement shall be
Grade 60, fy = 60,000 psi, #4 deformed reinforcing bars shall be
spaced at sixteen(16) inches center to center,both ways and with a
nummum lap length of eighteen (18) inches Expansion _joints
shall be placed at the end of each curb return, and at a maximum
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Department of Public Works STREEr PAVING
Engineering Division
spacing of sixteen (60) feet with control _joints every twelve (12)
feet
b Mimmum stabilized subgrade thickness shall be six(6)inches
2 For pavement widths greaterTm twenty-eight(28) feet from back of curb
to back of curb, or twenty-six (26) feet from edge of pavement to edge of
pavement, and for boulevard or major thoroughfare sections
a Minimum concrete slab thuckness shall be seven (7) inches with fc
= 3,000 psi and reinforcement shall be Grade 60, fy= 60,000 psi,
#4 deformed reinforcing bars shall be spaced at sixteen(16) inches
center to center, both ways, and with minimum lap length of
eighteen(18) inches. Expansion_7omts shall be placed at the end of
each curb return, at a maximum spacing of sixty (60) feet on both
residential and collector streets, boulevards, and major
thoroughfares, with control_joints every twelve (12) feet
b Minimum stabilized subgrade thickness shall be eight(8) inches
3 For HMAC pavements.
a Mimmum thickness shall be two(2) inches
b Minimum subgrade thickness shall be eight (8) inches of stabilized
crushed concrete or limestone, and six (6) inches of lime-stabilized
subgrade
D Subgrade Treatment The geotechrucal engineer shall base the depth of the
subgrade stabilization on the structural number (SN) in conjunction with
pavement tiickness design. The following is general guidance for subgrade
treatment
1 For subgrade soil conditions with a clay content of ten (10 0) percent or
lugher, and a plasticity index (PI) of ten (10) or more, the subgrade shall
be stabilized with lime Subgrade shall be stabilized with a minimum six
(6) percent lime by weight at required thickness, and compacted to mnety-
five (95) percent standard Proctor density Alternative subgrade
stabilization may be substituted when specific recommendations are made
by the geotechrucal engineer for the project, and when specifically
approved by the City Engineer
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Department of Public Works STREEr PAVING
Engineering Division
2 For subgrade soil conditions containing clean sand with no clay content,
the subgrade shall be stabilized with cement
E Requirements for Intersections, Turnouts, Transitions, and Boulevards or
Thoroughfares
1 At a "T" intersection with a street that has not been improved to its
ultimate width, the concrete pavement shall be stopped either at the rights-
of-way line, or the end of the curb return, wluchever would require less
concrete removal at a future date
2 For roadway turnouts placed at an existing street intersection, the turnout
shall be designed to fit the ultimate pavement width of the intersecting
cross street and then transitioned to the existing roadway
3 The transition length for meeting an open-ditch street, shall be fifty (50)
feet for street widths less than or equal to twenty-eight(28) feet from back
of curb to back of curb; seventy-five (75) feet for twenty-rune (29) feet to
forty (40) feet from back of curb to back of curb; and one hundred (100)
feet for forty-one (41) feet from back of curb to back of curb or greater.
a Streets other than concrete shall have transitions with a mrmmum
1 thickness of eight (8) inches of lime-stabilized subgrade, six (6)
l _-inches of hot-mix asphaltic concrete base, or approved equal, with
i — —
—two (2) inches of hot-mix asphaltic surfacing.
b Concrete streets shall have transitions with a nurumum thickness
of six (6) inches of stabilized subgrade and six (6) inches of
concrete pavement
4. When paving only one section of a proposed two-section thoroughfare or
boulevard (boulevard section), all left-turn lanes and esplanade crossovers
shall be paved to the centerline of the street nght-of-way
F Requirements for Ditches on Open-Ditch Streets
r
1 Mimmum grade on ditches shall be two-ten 0 2)percent
2 Ditch capacity shall be designed to handle the storm water runoff as
determined within"Section V—Storm Drainage" section of thus manual
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Department of Public Works STREEr PAVING
Engineering Division
3 The maximum side slope shall not be steeper than three (3) horizontal to
one (1)vertical
4 Culverts for roadside ditches only shall be designed to carry the storm
water runoff, but shall not be less than eighteen (18) inch diameter pipe
constructed of reinforced concrete.
G Requirements for Pavement on Curb-and-gutter Streets.
1. Inlet spacing
a. Curb inlets shall be spaced and sized to intercept the calculated
storm water runoff for the design storm The design water surface
elevation for the design storm flow at the inlet, shall be less than or
equal to the top of curb adjacent to the inlet.
b Maximum travel distance of water in the street from a lugh point to
a curb inlet shall be three hundred (300) feet on major
thoroughfares, boulevards, commercial streets and collector streets
unless otherwise approved by the City Engineer. The maximum
travel distance of water in the street from a lugh point to a curb
inlet permitted on residential streets shall be three hundred (300)
feet unless otherwise approved by the City Engineer
--Max mum drop of grade tangents from opposite directions to a
common inlet shall be one and one-half(1 5) feet
Curb inlets shall be located on the intersecting side street at an
\� intersection with a lugher classification street Location of curb
\ inlets required on a mayor thoroughfare, at intersections, shall be
�l specifically approved by the City Engineer
e Backfill around inlets below grade shall be one and one-half(1 5)
sacks per cubic yard of cement-stabilized sand, and to the top of
the first stage of inlet
2 Design gutter grade shall be three-tenths (0 3) percent, if the gutter grade
is less than three-tenths (0.3) percent and approved by the City Engineer,
then the City Engineer shall determine the required inlet spacing The
nummum acceptable gutter grade shall be two-tenths (0 2)percent
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3 Maximum cut from finished grade at property line to top of curb, shall be
one and three-quarters (1 75) feet
4 Mimmum grade shall be one (1 0) percent fall around intersection turnout
for a mrmmum radius of twenty-five (25) feet Grades for larger radius
shall be determined on an individual basis
5 Vertical curves shall be installed when algebraic differences in
intersecting grades exceed one (1 0) percent Elevations shall be shown at
ten (10) foot intervals through vertical curves. Maintain a nummum of
three-hundredths (0.03) foot elevation change at ten (10) foot intervals by
altering the calculated elevations.
6 When a curb-and-gutter intersects a drainage ditch, the elevation of the
adjacent gutter shall be above the design water surface elevation in the
ditch
7. Minimum gutter grade around a cul-de-sac shall be six-tenths (0.6)
percent.
8 Curves on mayor thoroughfares shall be superelevated in accordance with
AASHTO whenever the centerline radius of any lane of pavement is less
than two thousand(2,000) feet
9. The amount of cross slope over the pavement section shall be shown on
the drawings The required cross slope shall be three-eighths (3/8) inch
per foot from curb line to quarter point, and one-quarter(1/4) inch per foot
from quarter point to the center line, and one-quarter (1/4) inch per foot
for left-turn lanes
10 A nummum grade of four-tenths (0 4) percent around the longest radius is
required on an L-Type street intersection
11 When meeting an existing upright curbed street, top of new curb
elevations shall be designed to meet an elevation six (6) inches above the
existing gutter/pavement, or gutters shall be matched and new top of six
(6) inch curb fransitioned to top of existing curb At existing inlets, top of
new curb elevations shall be designed to match existing top of existing
inlets
12 When the curb elevations are not established below the natural ground, fill
lines shall be shown on the drawings and shall be of sufficient height to
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Department of Public Works STREEr PAVING
Engineering Division
ensure a minmum of three-eighths (3/8) inch per foot transverse slope
toward the curb from the property line between a point, two (2) feet
outside the nghts-of-way and the top of curb If dus type of fill is
required, and the pavement is adjacent to a nonparticipating property
owner, fill easements from this property owner shall be obtained, filed,
and a copy of the easements shall accompany the final drawings
Construction of dus untrue will require back-slope drainage design to
prevent trapping storm water runoff.
13 Elevations and grades shall be labeled for all tops of curb Centerline
elevations and grades are acceptable for open-ditch sections only
H. Requirements for Inlets on Curb-and-gutter Streets
1 Type "BB," with grate or plate tops, or type "H-2" inlets, shall be used on
all curb-and-gutter streets depending on storm water runoff requirements,
unless otherwise approved by the City Engineer.
2 Inlets shall be placed at the end of pavement in order to eliminate direct
drainage of storm water from the pavement gutter into an open-ditch or
onto adjacent property
3 On open-ditch streets, place stub-outs with rmg grates from inlets to
ditches
I Requirements for Curbs and Sidewalks
1 For curbs located along the outside edges of residential streets, the
standard dimensions shall be four (4) inches tall and twelve (12) inches
wide Curb height for streets other than residential shall be six (6) inches
tall The curb height on all esplanades shall be six(6)inches
2. Sidewalks are required as set out in Section III of the Subdivision
Ordinance and Section 70-66 of the Code of Ordinances Where
sidewalks are required, they shall have a minmum width of four (4) feet,
except on TxDOT rights-of-way where the minimum width shall be five
(5) fee
3 Sidewalk wheelchair ramps shall be required at all intersections, and at or
through all driveways where required The design and installation of such
ramps shall comply with Texas Accessibility Standards Architectural
Barriers requirements
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Department of Public Works STREEr PAVING
Engineering Division
4 All sidewalks shall be constructed in accordance with the City of
Fnendswood Standard Details, including through all driveways where
required The design and installation of such sidewalks shall comply with
the Texas Accessibility Standards Architectural Barriers requirements
5 The location of all proposed and existing si ks shall be shown on the
construction drawings
5 ,
4 ! r
J Requirements for Miscellaneous Items
1 The type and amount of subgrade treatment shall be shown on the
drawings.
2 Paving headers shall be placed at the end of all concrete pavements.
3 All concrete to be removed, shall be saw cut one half of the pavement
depth before removal
4 Sight distance requirements shall be based on the latest version of the
AASHTO design practices
5 Standard City of Fnendswood barricades shall be placed at the end of all
dead-end streets not terminating in a cul-de-sac
6 The appropriate drainage agency approval shall be obtained before City
approval is granted if the design involves a drainage way or other drainage
facile-
7 A, of agreement from the affected pipeline company(s) is required
when'any paving is placed over a transmission pipeline or any utility line
is placed over or under such lines
8 When new concrete pavement meets existing concrete pavement,
onzontal dowels shall be used if no exposed reinforcing steel for
in onnecthon with new pavement exists. Horizontal dowels shall be
Grade 60, #5 reinforcing bars, twenty-four (24) inches long, drilled and
embedded twelve (12) inches into the center of the existing slab and
epoxied Dowels shall be spaced at sixteen (16) inches center to center,
unless otherwise specified
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Engineering Division
9 Dead-end streets or ends of concrete streets designed to be extended in the
future shall have paving headers and twelve (12) inches of reinforcing
steel exposed beyond the pavement, coated with asphalt and wrapped with
burlap, or shall have paving headers and dowel type expansion point for
future pavement he-in
10 Pavement extensions shall connect to the existing pavement as shown on
the City of Fnendswood Standard Details
11 A design for concrete pavement tiuckness is regmred for all pavements
within mdustdal areas and on major thoroughfares Concrete pavement
thickness design shall be based on the latest version of the AASHTO
design procedures for rigid pavements.
12 The pavement structure for each roadway shall be designed based on soil
data from the site, and based on the anticipated traffic volume, loading,
and service life of the proposed pavement structure The design engineer
is responsible for ensuring that the pavement structure is designed to
withstand the anticipated loads on the roadway
1 05 APPURTENANCES—Reserved
106 SUBMITTALS—Reserved
1 07 QUALITY ASSURANCE
A All construction drawings and specifications shall be prepared by or under the
supervision of a Professional Engineer licensed to practice engineering in the
State of Texas, and all documents shall be sealed, dated, and signed by the
engineer responsible for their preparation along with their firm's registration
information
B All geotechmcal testing, environmental, and similar services for design and
testing shall be performed by or under the supervision of a Professional Engineer
licensed to practice engineering in the State of Texas, and trained in the science of
soil analysis All design and testing reports and documents shall be sealed, dated,
and signed by the engineer responsible for their preparation along with their
firm's registration information.
2.0 EXECUTION
201 RESEARCH REQUIREMENTS—Reserved
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202 DESIGN ANALYSIS
A All pavement design shall be supported by calculations to establish the required
tiuckness and reinforcement
B The appropriate geotechrucal soils report shall be the basis for design considering
the use,loading, and life span of the proposed pavement
C All drainage improvements shall be designed to accommodate the anticipated
storm runoff. It
2 03 DRAWINGS
A. Construction dnnvmgs shall be prepared in compliance with the City of
Fnendswood Design Criteria Manual, Section I—Grapluc and Design
Requirements.
B Refer to The City of Fnendswood Design Criteria Manual,Appendix B, Figure 1
"Geometric Street Design Standards"for additional information and guidance
Fourvoeo
lass
\ S
r
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Department of Public Works STORM DRAINAGE
Engineering Division
SECTION V
STORM DRAINAGE DESIGN REQUIREMENTS
1.0 GENERAL
A Should any portion of this Section conflict with any provisions of the Subdivision
Ordinance,Zoning Ordinance,the Galveston County Consolidated Drainage District
or the Huns County Flood Control District,the more stringent of the latter four(4)
will govern
B The City Engineer shall have the final interpretation of any provisions in trus Design
Criteria Manual
C The City Engineer has the right to issue administrative orders or design criteria
modifications for just cause related to any provisions or conditions in this Design
Criteria Manual
1 01 CHAPTER INCLUDES:
Criteria for the design of stone drainage improvements
,�l�r' /
102 REFERENCES
A City of Fnendswood Standard Details and Technical Specifications, latest version
These can be downloaded from www fnendswood com/publications
B City of Fnendswood Flood Damage Prevention Ordinance, Chapter 34 of the Code
of Ordirnme s, and any subsequent revisions
C GalvestoA,unty Consolidated Drainage District Criteria Manual
D Hams County Flood Control District Design Criteria Manual Ordinance No
T2007-20 amends the Flood Damage Prevention Ordinance by adopting the Huns
County floodplarn maps as revised on June 18, 2007
E TX DOT Bridge Division Hydraulic Manual, the latest edition
F National Weather Service Documents — TP-40 Rainfall Frequency Atlas of the
United States
G Hams County/City of Fnendswood Memorandum of Understanding regarding
maintenance of Hams County Hydraulic and Hydrologic models
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103 DEFINITIONS
A Acceptance Procedures—For projects in Galveston County, the Galveston County
Consolidated Drainage District must accept and approve all detentionponds or other
drainage facilities entering their system before the City of Fnendswood accepts the
infrastructure The acceptance of the facility shall be placed on the next available
Board agenda for,pproval and acceptance subject to the contractor's one (1) year
maintertance period For projects in Hams County,the Hams County Flood Control
District will accept and approve all detention ponds as applicable
B Condint—any open or closed device for conveying storm water. \
C Development—A change inland use that alters the impervious coverage of the tract
ofland Impervious cover includes,but is not linutedto,concrete,asphalt,stabilized
soil,tennis courts,water features,pools,sidewalks,crushed concrete,limestone,and
roofing
D Drainage Area Map—Area map of a watershed which is subdivided to show each
area served by each subsystem
E Design requirements—The drainage criteria developed by the City of Fnendswood,
and complemented by those of the Galveston County Consolidated Drainage District
and the Harris County Flood Control District, are intended to provide design
guidelines for protection of all areas of the City from structural flooding resulting
from a one hundred (100) year storm event Tlus is accomplished with the
application ofvanous drairage enhancements such as storm sewers,roadside ditches,
open channels,detention, and sheet flow runoff The combined system is intended to
prevent structural flooding from extreme events up to a one hundred (100) year
storm, all development must account for the one hundred(100)year storm event as
further detailed in this Section
F FEMA—Federal Emergency Management Agency
G Flood Control — The City of Fnendswood is a participant nn.the ational Flood
Insurance Program The intent of the flood insurance program i make insurance
t
available at a reasonable cost by providing for measure may reduce the
likelihood of structural flooding.
H GCCDD—Galveston County Consolidated Drainage District
I HCFCD—Huns County Flood Control District
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Department of Public Works STORM DRAINAGE
Engineering Division
J Hydraulic Grade Line—A line representing the pressure head available at any given
point within the drainage system
K In-Fill Development—Development of open tracts of land in areas where the storm
drainage infrastructure is already in place and takes advantage of the existing
infrastructure as a drainage outlet
L Public storm sewers—Defined as sewers and appurtenances that provide drainage for
public nghts-of-way,more than one private tract,and are located in public nghts-of-
way or drainage easements
M Private storm sewers—Defined as sewers and appurtenances that provide drainage
for a private development, one or more than one private tract, and are located in
private drainage easements.
N Rainfall frequency—Probability of a rainfall event defined by a percent chance of
occurring in any given year Information on rainfall frequency is published by the
National Weather Service For the purpose of storm drainage design,the following
frequencies are applicable
1 Five (5) year frequency—a rainfall intensity having a twenty(20) percent
probability of occurrence in any given year or nommallylikely to occur once
every five (5) years
2 _ _Ten (10) year frequency — a rainfall intensity having a ten (10) percent
probability ofoecurrence in anygiven year or nominallylikelyto occur o e
every ten(10) years
3 Twenty-five (25) year frequency — a rainfall intensity having a four (4)
percent probability of occurrence in any given year or nominally likely to
occur every twenty-five (25) years
4 One hundred (100) year frequency— a rainfall intensity having a one (1)
percent probability of occurrence in any given year or nominally likely to
occur every one hundred(100) years
O Relationship to the Platting Process—Approval and review of storm drainage is a
part of the review process for planning and platting of new developments The
review of storm drainage is overseen by the Community Development Department,
Public Works Department, and the Galveston County Consolidated Drainage
District
P Sheet Flow—Overland storm water run-off that is not conveyed in a defined conduit
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Engineering Division
Q Storm Sewer—Storm sewers and roadside ditch conduits are designed as a balance of
capacity and economics These conduits are designed to convey less intense, more
frequent rainfalls with the intent of allowing for traffic movement on streets during
these events
R Street Drainage—When rainfall events exceed the capacity of storm sewer systems,
the additional runoff is intended to be stored, detained, or conveyed overland in a
manner that reduces the threat of flooding to structures Street pondmg of a short
duration is anticipated and street drainage is designed accords to contribute to the
overall capability of the drainage system s O --
!Y
104 DESIGN REQUIREMENTS
All designs of drainage facilities shall meet the requirements of the City of Fnendswood
Standard Details and Technical Specifications
A Determination of Runoff
Design Storm Events — All drainage improvements shall be designed for the
following storm frequencies as established by the City of Fnendswood, Galveston
County Consolidated Drainage District, and Hams County Flood Control District
Type of Facility Freuuencv
Road Side Ditch five (5) year
Storm Sewers five (5) year
Channels/Storm Sewers/Culy
One hundred(100) acres or le - twenty-five (25) year
Creeks/Channels/Culverts draining
One hundrS�Llj 00) acres or more one hundred(100) year
B The Rational Method shall be used for determining the peak flow rate in the sizing of
all drainage improvements
1. Time of Concentration(in minutes)is the time required for peak runoff,from
the entire upstream contributing area,to reach the point of interest Time of
concentration can be calculated based upon an analysis of the actual travel
time from the most remote point in the drainage area The travel path should
be clearly denoted and a sketch included in the design calculations
I, — D/60V+ 10 (minutes)
D — flow distance (fl)
V — flow velocity(f/sec)
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Department of Public Works STORM DRAINAGE
Engineering Division
For purposes of calculating I,the following velocities are recommended
V = 1 ft/sec; for overland flow
V = 1 5 ft/sec; for flow across paved surfaces or along gutter flowlmes
V = 2 ft/sec; for flow in a ditch or channel
V = 3 ft/sec; for flow in a storm sewer
s `"s
2 Rainfall Intensity(mches/hom) shall be calculated using the following
formula:
I = b
(d+te)e
b,d,and e values are derived from a single frequencyrainfall mtensitygraph
b = the y-intercept of the straight line
d = a constant used to adjust the relationship to plot as a straight line
e = the slope of the straight line
Values typically used in Fnendswood are listed below:
to <=60 min
Rainfall
4
Frequency b_ d e
3-year 906 195 0 803
5-year 929 197 0 788
10- ear 1079 236 0 781
25-year 985 240 0 729
50-year 1070 21 1 0 734
100-year 908 165 0 685
to> 60 min
Rainfall
Frequency b_ d e
3-year 71 0 84 0 774
5-year 70 1 77 0 752
10-year 966 17.2 0 770
25-year 89.2 104 0 736
50-year 865 100 0 709
100-year 840 11 0 0 679
3 The Rational Method is a method for calculating the peak flow rate for a
storm drain system The formula for determining the peak flow rate is
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Department of Public Works STORM DRAINAGE
Engineering Division
Q=Cf CIA
Where
Q = Flow rate (cubic feet per second(cfs))
Cf— Frequency factor,the product of Cf and C should not exceed 1 0
C = Runoff Co ffictent
I = Rainfall intensity(inches/hour) for a given storm frequency
(Typically 5 year, 25 year, and 100 year)
A = Area (acres) \
For the purposes of peak flow calculations,use the following °Cf"
Cf— 1 00, for storm frequencies of 10 years or less
Cf— 1 10, for storm frequencies of 25 years
Cf= 1 25, for storm frequencies of 100 years
For the purposes of peak flow calculations, use the following runoff
coefficient"C,"Much are m no way related to the lot coverage percentage as
defined in the Zoning Ordirtance.
Land Use Tvne Run-off Coefficient
Raw Undeveloped Acres 020
i Improved Undeveloped Acres
(i e,mowed, filled, re-graded, etc) 030
Parkland 040
Residential
SFR-Estates 045
SFR 055
Multi-famrl
MFR-GHD 065
MFR-L 0.75
MFR-M 080
MFR-H 085
MHR 085
Commercial/Industrial
OPD/BP - 090
DD/CSC/NC 095
LI/I 0 95
Pond(detention and amenity) 1 00
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Department of Public Works STORM DRAINAGE
Engineering Division
Alternatively, for estate-sized lots [greater than two (2 0) acres],the runoff
coefficient"C"in the Rational Method formula can be calculated from the
equation
C=06Ia+ 02
Where
C = watershed coeffictent�
la= impervious area/total area
If the alternate form is to be submitted, the calculation of the runoff
coefficient"C"shall be provided as part of the drainage calculations
C Design of storm sewers
1 Design Frequency
a. Areas of New Development
The design storm event for sizing storm sewers for new development
areas shall be a five (5) year storm In any case where new
development interferes with the natural sheet flow of the existing
adjacent land, the storm system shall accommodate the runoff
Stubbed out streets next to undeveloped areas shall have storm sewer
lines continuing to an approved outfall
b__ _. In-fill Development
1
1) An existing storm sewer and structures shall be evaluated
using a five (5) year storm, assuming no development takes
place The storm sewer and structures shall then be evaluated
with the development in place
a) If the proposed development has a lower or equal
impervious cover, no modifications to the existing
storm sewer system are required
to If the hydraulic gradient of the existing storm drainis
below the top of the curb, no improvements to the
existing storm sewer system are required
c Private Drainage Systems
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Department of Public Works STORM DRAINAGE
Engineering Division
1) Storm sewers for private drainage systems shall conform to
the City of Fnendswood Technical Specifications and
Standards Details for public drainage systems Mnmmum
diameter pipe for a private storm sewer system is ten (10)
inches
a) Unless otherwise approved by the City Engineer, all
private drainage systems shall be constructed in
L conformance with the public storm sewer standards
� to An approved permit shall be obtuned.from the City
r before any work shall be done on a private drainage
j system and shall include plan and profile sheets
detailing the scope of the work,with elevations
c) Open ditch areas maybe converted into storm sewer
lines with the approval of a Development Permit and
C/`.•/ t 1 Specifications for Residential Storm Sewer
Installation Specification Form. Guidelines for the
W - process are defined in Appendix F of this Design
Criteria Manual
d) Private storm sewer connections to public storm
sewers shall occur at a manhole, or at the back of an
inlet, as approved by the City Engineer
2 Pipe Velocity and Slope Design
a All storm drains shall be designed by the application of Morning's
Equation and the Continuity Equation
Morning's Equaho�.
V=(I 486/n) R2/3S1/2
Where
V = velocity
R = hydraulic radius (area in square feet/wetted perimeter in feet)
S = slope of energy line in feet/feet(same as condint bottom
slopes for uniform flow)
n = coefficient of roughness
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Department of Public Works STORM DRAINAGE
Engineering Division
n = 0 013 for concrete pipes,
n = 0 024 for CMP (Corrugated Metal Pipe)
n = 0 011 for PVC(Polyvinyl Chloride)
n = 0 010 for HDPE (High Density Polyethylene)
*Note Allpubhcstorm sewers in or onpubhc rights-of-way,m7dpublm drainage
easements shall be constructed of RCP (Reinforced Concrete Pipe) unless
otherwise approved by the City Engineer Mmnmg's roughness coefficients for
CMP, PVC, and HDPR shall be used for storm sewers on private property only
CMPpmesshall be usedforpubhc storm sewers only upon specific approval ofth e
\� City Engineer andior the applicable drainage dutrict enay(GCCDDorHCFCD)
�A Continuity Equation.
V'
Where
Q = discharge (cfs)
V = velocity(f/sec)
A = wetted cross sectional area of condurt(A2)
J Design velocities shall be three (3) feet per second with the pipe
flowing full
c Maximum velocities shall not exceed seven (7) feet per second
without the approval of the City Engineer
d Mitumum Public Storm Sewer Pipe Slopes
Pipe Diameter % Slope
24" 018
30" 0 14
36" 0.11
42" 0.08
48" 007
54" 006
60" 0.05
*Used for Inlet leads only
e For pipe sizes not listed above, the minimum slope shall be
determined utilizing a design velocity of three (3) feet per second
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Engineering Division
3 Pipe Sizes and Placement
a Public storm sewer lines and inlet leads shall be a mimmum of
twenty-four (24) inch inside diameter and eighteen(18) inch inside
diameter, respectively, or equivalent Box culverts shall be at least
two (2) feet x two(2) feet inside dimension
b Larger pipes located upstream shall not flow downstream into smaller
pipes unless it is intended for detention requirements
c Match crowns of pipe at any size change unless severe depth
constraints prohibit such,or engineering calculations show flowlines
should be matched. +�
d. Locate public storm sewers in public street rights-of-way,in parallel
and adjoining easements,or in other approved easements Easements
shall be at least twenty(20) feet wide, and the storm sewer shall be
centered in the easement
4 Starting Water Surface and Hydraulic Gradient
a The hydraulic gradient shall be calculated assuming the top of the
outfall pipe as the starting water surface
I
b At drops in pipe flowline,should the upstream pipe be lugher than the
—hydraulic grade line, the hydraulic grade line shall be re-calculated
/ assuming the starting water surface to be at the top of pipe at that
point
c For the design storm, the hydraulic gradient shall at all times be
below the gutter line elevations at any point along the street
it Hydraulic grade lines shall be shown on all profile drawings
5 Manhole Locations i
Manholes are required at the following locations
a Size or cross section changes
b Inlet lead and conduit intersections
c Changes in pipe grade
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Engineering Division
d Street intersections
e A maximum spacing of six hundred (600) feet measured along the
condmtrim
f M es she1 Fbera2, . ated m driveway or sidewalk
areas
- mn
g Adjust manhole frames and covers within the limits of the pavement
to meet the proposed final top of slab
6. Inlets
a. Locate inlets at all low points in gutter
b. Valley gutters across intersections are not permitted
C. Inlet spacing is generally a function of gutter slope For minimum
gutter slopes of three-tenths (0 3) percent, the maximum spacing of
inlets shall result from a maximum gutter run of three hundred(300)
feet from a lugh point in the pavement to an inlet on a continuously
graded street secttoq for a maximum spacing of six hundred (600)
s feet between inlets
1 d If gutter slopes are less than three-tenths (0 3) percent, the City
Engineer shall determine the inlet spacing The acceptable minimum
gutter grade is two-tenths (0 2) percent
e Use only Standard Inlets Or
Inlet Application Capacity
Type A Parking Lots/Small Areas 2 5 cfs
Type B-B Residential 5 0 cfs
Type D Puking Lots 2 0 cfs
Type E Roadside ditches 20 0 cfs
Type H-2 Residential /Commercial 5 0 cfs
f Do not use "Beeluve"style grate inlets or other specialty inlets
g Do not use grate top inlets in an unlined roadside ditch
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Engineering Division
h Place inlets at the end of curb returns on side streets, when such
streets intersect streets of a higher classification, unless special
conditions warrant otherwise and are approvedbythe City Engineer
1 Storm sewer inlets shall be established in such numbers and in such
locations as to effectively drain storm water from paved sections A
graplucal plan and calculations of the hydraulic gradient shall be
furnished by the design engineer.
D Consideration of Overland Flow
1. Design Frequency—the design frequency for consideration ofoverlandsheet
flow shall consider extreme storm events which exceed the capacity of the
underground storm sewer system resulting in ponding and overland sheet
flow through the development to the primary drainage outlet
2 Relationship of Structures to Street—all structures shall be constructed as per
the Flood Damage Prevention Ordinance,and shall be higher than the highest
level of ponding resulting from the extreme storm event as shown on the
latest City adopted flood maps
3 Calculation of Flow '
y a- _ _ Streets will be designed so that consecutive high points in the street
will provide for a gravity flow of drainage to the ultimate outlet.
b The maximum depth of ponding at lugh points willbe the top of curb
of streets with curbs, or e elevation of the centerline of roads
without curbs s
c The maximum depth of ponding at low points will be nine (9)inches
above the gutter elevation of curb of streets with curbs, or three (3)
inches above the elevation of the centerline of streets without curbs
d Sheet flow between lots can be provided only through a defined
drainage easement.
e A map shall be provided to delineate the flow direction of the
extreme event through a proposed development,and how trus flow is
discharged to the primary drainage outlet
f In areas where ponding occurs and no sheet flow path exists, a
calculation shall be provided to show that runoff from the one
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Engineering Division
hundred(100)year event can be conveyed and remain in compliance
with the other terms of dus Section
4 Overland flow shall enter outfall drainage facilities (channels or detention
ponds) through a storm sewer with its last run sized to convey the one
hundred (100) year event Calculations shill be submitted for sizing the
structure and determining that adequate inlet capacity exists
5 Maintain pre-existing natural overland flow of storm water, and provide
protection for adjacent properties from redirected storm water flows
6. For development greater than five (5) acres, show contours of adjacent
properties within two hundred(200)feet,and account for natural and existing
overland flow or chumnelized flows
E Design of Open Channels
1 Design Frequency
a. Open channels shall be designed according to methods described in
the Galveston County Consolidated Drainage District(GCCDD)and
Hams County Flood Control District(HCFCD) Criteria Manuals
b- -_ __Design standards for channel construction shall follow the
requirements specified in the GCCDD &HCFCD Criteria Manuals
c Design standards for the outfalls into channels shall conform to those
in the GCCDD & HCFCD Criteria Manuals
2 Determination of Water Surface Elevations
a Water surface elevations shall be calculated using Morning's
Equation and the Continuity equation
b For the design storm event,the water surface for ditches and channels
shall be calculated to remain within the banks and at or below the
required freeboard =
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Engineering Division
3 Design of Culverts
Head losses in culverts shall conform to TxDOT Bridge Division Hydraulics
Manual, Chapter 4—Culverts
F Design of Roadside Ditches =, 77N
1 Design Frequency m n
a Roadside ditches are permissible only for single family residential
lots having widths larger than, or equal to,one hundred twenty(120)
feet.
b. Design storm event for a roadside ditch shall provide one-half(0 5)
foot of freeboard below the edge of pavement, or the natural ground
at the rights-of-way line,whichever is lower
C. The design must include an extreme event analysis to indicate that
adjoining structures will not be flooded
2 Velocity Considerationsir
a For grass lined sections,the designvelocity shallbe two(2 0)feetper
second during the design storm event The maximum velocity shall
be five (5) feet per second.
b A grass lined or unimproved roadside ditch shall have side slop no
steeper titan three (3) horizontal tone (1) vertical
c Mimmum grades for roadside ditches shall be two-ten (0 2)
percent
d. Calculation ofvelocityshall urea Manning'sroughn coefficient of
four hundredths (0 04) for earthen sections d twenty-five-
hundredths (0 025) for ditches with paved 1 is
e Use erosion control methods acceptable to the City when design
velocities are calculated to be greater than three (3) feet per second
and are approved by the City Engineer
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Engineering Division
3 Culverts
a Culverts shall be placed at all driveway and roadway crossings and
other locations where appropriate
b Culverts shall be designed assuming inlet control
c Roadside culverts shall be sized based on drainage area Calculations
shall provide for each block based on drainage design criteria
presented to this manual
ad
d Cross open channels with roadside culverts no smaller than eighteen
(18) inch diameter or equivalent. The size of culvert used shall not
create a head loss of more than two-tenths(0 2) feet greater than the
normal water surface profile without the culvert
e Use erosion control methods acceptable to the City when design
velocities are calculated to be greater than three (3) feet per second
and approved by the City Engineer
f Sloped End Treatments (S ET 's) are required on all TxDOT
Highways
4 Depth and Size Limitations for Open Ditches
a Residential streets —the maximum depth shall not exceed two and
one-half(2 5) feet below the edge of pavement
b Roadside ditch bottoms shall be at least two(2) feet wide.
c Ditches in adjoining andparallel easements shall have the top ofbank
not less than two (2) feet from the outside easement line or edge of
pavement when applicable.
d. Roadside ditch side slopes shall not exceed three(3)horizontal to one
(1)vertical
e The design s o or a roadside ditch shall provide one-half
(0 5) foot of freeboard below the edge of pavement, or the natural
ground at the nghts-of-way line,whichever is lower
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G Design of Outfalls
1 Outfall design shall conform to GCCDD and HCFCD standards as
applicable
2 Detention pond and storm sewer outfalls shall be placed one foot above the
flowlme of the receiving channels, creeks, and detention pond, or two foot
above normal water elevation, whichever is greater.
3 Flowlmes of storm sewer outfalls shall be located six (6) inches above the
flowline of a receiving roadside ditch.
H. Storm Water Detention X
1 Application of Detention.
a As a normal consideration, storm water detention shall be required
The use of on-site detention is required in order to mitigate potential
damage to existing structures unless the current infrastructure has
been improved and provides mitigation for the development,the City
huffs developed a plan for a detention facility to serve the overall area,
the development is withun an existing subdivision served by a
_ _detention facility that is witrun the platted boundaries of said
subdivision and that has been previously accepted and approved by
the City and the GCCDD,or a development qualifies for the purchase
of regional detention under certain circumstances enumerated in
Subsection G, Item 6
t
b Design calculations for sizing the detention basin and related
structures shall be performed by the applicable method described in
the following sections
C. All calculations shall be sealed and signedbya Professional Engineer
licensed to practice engineering in the State of Texas
d All commercial andnon-residential new developments,additions,or
redevelopments will require a new or revised drainage plan for
additional impervious cover The standard minimum rate of
detention referenced in paragraph 2 below will apply to dus
impervious cover
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Engineering Division
e A parking lot with a curb maybe used as part of the detention system,
provided that the maximum depth of water over the inlet throat flow
line does not exceed nine (9)inches, and the maximum depth in any
parking stall does not exceed six(6)inches
2 Calculation of Detention volume using the Hydrologic Method for
Projects of one hundred(100) acres or less.
a. Minimum Rate of Detention for Projects of one hundred(100)
acres or less
When using any of the methods detailed below for calculating the required
amount of detention, the mimmum amount of detention provided shall
never be less that the following standard mimmum rates as follows:
For the purpose of determining the standard minimum rate, all the acreage
used in the calculation must include proposed or existing development
Raw/undeveloped acreage may not be included in the calculation to lower
the standard mimmum rate
1) Commercial Projects—Defined as projects with mnety(90)
percent or more impervious cover or a runoff coefficient of
nine-tenths (0 9) or larger—Standard minimum rate of six-
tenths (0 6) ac IT per acre
'Z 2) Multi-Fanuly Projects—Defined as projects with eighty
(80) percent or more impervious cover or a runoff
coefficient of eight-tenths (0 8) or larger—Standard
\ marrimum detention rate fifty-five-hundredths (0 55) ac ft
per acre
3) Residential Projects—Defined as projects with forty(40)
percent or more impervious cover or runoff coefficient of
fifty-five-hundredths (0 55) or larger—Staiagard nummum
detention rate of five-tenths (0 5) ac ft acre
4) Estate Lot Projects—Defined as projects with less than
forty (40)percent impervious cover or a runoff coeffiencent
less than fifty-five-hundredths (0 55)—No Standard
minimum detention rate shall apply
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Engineering Division
5) Mixed Use Projects—The Standard mtmmum rate of
detention shall be determined based upon weighted average
of the mnmmum rates set forth above
b Modified Rational Method
The modified rational method may be used to determine detention
storage for all projects less than five (5) acres
c Simplified Method
For projects less than five (5) acres,the standard mimmum rate
maybe used in lieu of performing a more complex analysis Tlus
coefficient multiplied by the total acreage will yield the total
detention volume required
d. Optional Detention Storage Methodology for Projects of one
hundred(100) acres or less
The maximum allowable release rate from the detention facility
during the one hundred(100)year storm event is the one hundred
(100) year peak flow rate from the area under pre-development
conditions The undeveloped peak flow rate shall be determined
using the rational method
The following method will be acceptable for determmmng storage
volume if the simplified method is not utilized
3 The Triangular Hydrograph Method may be used, or
4 The Unit Hydrograph Method may be used
For developments with more than one hundred (100) acres, a detailed
hydrologic analysis utilizing the HEC-1 or HEC-HMS Flood Hydrograph
method shall be required per the applicable governing entities
5 Calculation of Outlet Size _
Outfalls which utilize a pipe ctor to control outflow shall use the onfice
equation
a Reducer or Restnctor Pipes shall be sized as follows
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Engineering Division
1) Use the following equations to calculate the required
outflow orifice
Area of pipe=nd2/4
Q = CA(2 gh)S4
D = Q1/2 /2.25h-1/4
Where
Q = outflow discharge in cfs
C = 08
h = water surface differential (fi)
D = onfice diameter(ff)
A = area of pipe (ft2)
g = gravity(32.2 ft/s2)
New flow into receiving storm sewer cannot exceed
undeveloped flow.
2) For head differential in systems ouffalling into a roadside
ditch or storm sewer,the actual head loss or 1 foot,whichever
I ?4,'17
. �� is greater, shall be used For all other discharge conditions,
1 use 2 feet, or the difference between one hundred(100)year
water surface elevation and the elevation of the twenty-five
(25)year storm in the receiving channel,whichever is greater
�2 3) For detention systems ouffallmg into a public storm sewer,
^, the restnctor shall be sized based upon the peak five (5)year
developed flow
For detention systems ouffalhng into a public roadside ditch,
R the restnctor shall be sized based upon the peak five (5)year
undeveloped flow
5) For detention systems ouffallmg into creeys, channels, or
storm sewers sized to carry the twenty-fiv6(25) year or one
hundred (100) year storm, the restirctor shall be metered to
release the five (5) year, twenty-five (25)year, and one
hundred(100) year undeveloped flows
6) Restrictor shall be either the required diameter or the
equivalent cross-sectional area The orifice diameter "D"
shall be a mimmum of six(6)inches
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7) Detention ponds less than 1 acre in size shall have anummum
of 4 inches of freeboard All ponds one (1) acre or larger in
size shall have at least one (1) foot of freeboard Freeboard
shall be measured from the maximum one hundred(100)year
water surface elevation and shall not be used in the
calculation of storage or mitigation
6 Detention Pond Structural Requirements
a Side slopes shall not exceed a slope of four(4) horizontal to one (1)
vertical.
b Maintenance berms will be regnired in accordance with the Galveston
County Consolidated Drainage District Design Criteria Manual
C. Ponds with lengths over fifty (50) feet shall have a concrete pilot
channel
d. Concrete pilot channels shall have a minimum width of four(4) feet
and a minmum thickness of four(4) inches with#3 rebar spaced at
twelve (12)inches on center each way The concrete pilot channels
shall be constructed of 5-sack cement concrete with a compressive
strength of three thousand (3,000) psi at twenty-eight (28) days
-� - Provide a one(1)inch depression per every one(1) foot of transverse
slope,with redwood headers spaced every forty(40) feet
/ e Single-user ponds may use a GCCDD-approved'altemattve for
concrete pilot channels
f Appropriate covering(grass, slope paving, etc.) shall be established
on side slopes and pond bottom,to prevent erosion during periods of
maximum water velocity
g. A concrete gravity spillway, set at the maximum ponding elevation,
shall be provided at the detention pond outfall structure
h Wet detention ponds, and ponds with vertical walls, shall provide
access for safety and maintenance purposes Wet detention systems
shall have a method in place to minimize stagnation, such as an
aeration system
1 "Dry" detention ponds shall not be designed with less than two (2)
feet of depth
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7 Ownership and Easements
a Private Facilities
1) Pumped systems shall not be allowed Only detention
facilities which rely on gravity to discharge storm runoff will
be allowed by the City and the GCCDD
OKI
s '. 2) Responsibility for maintenance of the detention facility must
be indicated on the plat
u` 3) All private properties being served shall have drainage access
to the pond
CAS/
4) A private maintenance agreement must be provided hen
multiple tracts are being served.
b. Public Facilities
I Facilities will only be accepted for maintenance by the City
` when such is in the public interest
I
-----__2) The City will require a maintenance work area twenty (20)
feet wide surrounding the extent of the detention area Public
nghts-of-way or permanent access easements may be
included as a portion of thus twenty(20)-foot width
3) A dedication of easements or reserves must be provided by
the plat
4) Proper dedication of public access to the detention pond must
be shown on the plat or by separate instrument. Tlus mcludes
permanent access easements with overlapping public utility
easements
8 Off-Site Detention in the Galveston County Consolidated Drainage
District
a It is the desire of the City of Fnendswood that regional detention be
utilized when available If new development is within the service
area of a publicly owned or operated regional storm water detention
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Engineering Division
facility, connection to such regional facility shall be as requrred by
the drainage master plan applicable to such facility
b In Galveston County, offsite detention, such as regional or sub-
regional detention, may be purchased from the Galveston County
Consolidated Drainage District provided
)� The development drains to the Clear Creek watershed or the
tributaries of Clear Creek.
2) All lots or tracts must outfall into a conveyance system with
adequate capacity, excluding single family residential
i5 / construction on lots or tracts containing five(5) acr�s or less
3) The proposed improvements do not include the subdivision of
land.
4) The developed site does not exceed eight(8) acres for single-
family residential lots or tracts,five(5)acres for multi-fartuly
residential lots or tracts,and five(5)acres for commercial lots
,4, or tracts
5) Regional detention for site development relating to single-
family residential construction on lots or tracts contavdng
five (5) acres or less may be purchased based on square feet
of impervious cover by completing the Attachment#4,a copy
^., of which is made a part of tius manual All other site
development qualifying for the purchase of regional detention
\ must submit a new or revised drainage plan
FOUNUE
895
1895
Z
1\
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Engineering Division
9 Detention Requirements Summary
Lot Off-Site Engineered Detention Attaclunent GCCDD
or Volumm,
Tract Acreage Detention Drainage Calculation Rates #4* Board
Type Available Plans Method Required Approval
Purchase
Regional
Detention
Based On.
New $0 25
0-5 Yes Not Impervious per Yes Not
Required Coverage in SF Required
SF x$0.25/SF
Calculation of
Detention
SFR Volume
Unnecessary
Engineer
Determines $25,000
5-8 Yes Required the Detention
Volume per No Required by an per
Approved
Method
8+ No Required Engmeer On- NA No Required
Site Detention
Engineer
Determines $25,000
0-5 Yes Required the Detention per No Required
MFR Volume by an AC-FT
Approved
Method
5+ No Required Engineer On- NA No Required
Site Detention
Engineer
Determines $25,000
0-5 Yes Required the Detention per No Required
COM Volume by an AC-FT
Approved
Method
5+ No Required Engineer On- NA No Required
Site Detention
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Department of Public Works STORM DRAINAGE
Engineering Division
10 Conveyance
a The developer shall provide conveyance to a detention facility
without having a detrimental effect on any adjacent properties
b If conveyance is directed through properties not directly owned by
the -ifI eloper, an executed contract or recorded deed between the
parties agreeing to the said conveyance must be presented to the City
and the appropriate dramage district entity. ',.
c This procedure is approved by both the City and the corresponding
drainage district entity(GCCDD or HCFD) during preliminary plan
review.
105 RESERVED
106 SUBMITTALS
A Preliminary Submittals- Submit for Review and Comment.
1 One line drawings are required as part of the platting process One line
drawings shall include
a Approximate definition of lots and street patterns
b The approximate dramage areas for each system
c A definition of the proposed drainage system by single line
t
d The proposed pipe diameters
e Any proposed dramage easements
f Floodplain and floodway boundaries,of any
B Final Design— Submit the following for approval
1 Copies of any documents which show approval of exceptions to the City
Design Criteria
2 Design calculations for stone line sizes and grades, and for detention
facilities,of any
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3 Design calculations for the hydraulic grade line of each line or ditch,and for
detention facilities, if any
4 Contour map and drainage area map of the project
5 Plan and profile sheets showing storm sewer or open ditch design (public
facilities only).
6 Projects located within a floodplarn boundary or within a floodplarn
management area shall
a Show the floodplarn boundary or floodplain area, as appropriate, on
the one-line drawing or drainage area map
7 Soil boring logs
8 All drainage plans shall have a current FEMA flood zone determination
statement.
C Signature State—Submit the Following for Approval.
1 Review prints.
i
2 Original drawings. i ,Z�
3 Storm water detention maintenance agreement letters
1 07 QUALITY ASSURANCE-
Prepare calculations and construction drawings under the super of a Professional
Engineer licensed to practice engineering in the State of Texas and trained m the d4iplmes
required by the drawings The final construction drawings and all design calculations shall
be sealed,signed,and dated by the Professional Engineer licensed to practice engineering in
the State of Texas responsible for the development of the drawings along with their firm's
registration information
20 EXECUTION
201 RESEARCH REQUIREMENTS—Reserved
202 DESIGN ANALYSIS
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Engineering Division
A All projects shall be tied to National Geodetic Survey (NGS) Datum adjustment
which matches the Federal Emergency Management Agency(FEMA)rate maps or
the most current NGVD Much matches the FEMA rate maps In the event GPS
surveying is used to establish benchmarks,at leasttwo(2)references to benchmarks
relating to the FEMA rate maps must be identified Equations may be used to
translate other datum adjustments to the required adjustment
B Plan sets shall include a drainage area map Much shall contain all storm sewer
drainage calculations
C All drainage systems for curb-and-gutter pavements shall be underground closed
conduits; individual residential lot drainage is exempt Drainage systems for
pavements without curb-and-gutter shall be roadside open ditch sections.
D Soil boring with logs shall be made along the alignment of all storm sewers having a
cross section equal to or greater than seventy-two (72) inches in di et r or
equivalent cross section area. Boring should be taken atintervals not to exceed ve
hundred(500)linear feet, and to a depth not less than three (3) feet below the w
line of the sewer The required bedding will be determined from the soil boring.
E Plan sets shall include the five (5) year Hydraulic Grade Line for storm sewers and
roadside ditches on the plan and profile sheets
FouNOEU �y
1895
1\ r-
��
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Department of Public Works SITE DEVELOPMENT
Engineering Division
SECTION VI
SITE DEVELOPMENT
1.0 GENERAL
A Should any portion of this Section conflict with the Subdivision Ordinance or the
Zoning Ordinance, the more stringent of the latter two(2) shall govern
B The City Engineer shall have the final interpretation of any provisions in this
Design Criteria Manual.
C The City Engineer has the right to issue administrative orders or design criteria
modifications for just cause related to any provisions or conditions in this Design
Criteria Manual.
1 01 CHAPTER INCLUDES.
Criteria for the design of site development plans
102 REFERENCES
A City of Fnendswood Zoning Ordinance
B City of Fnendswood Subdivision Ordinance
C City of Fnendswood Standard Details and Technical Specifications, latest
version These details can be downloaded from
www friendswood com/pubincatnons
D Texas Department of Transportation—Traffic Control Plan
103 DEFINITIONS
Commission—Planning and Zoning Commission
1 04 DESIGN REQUIREMENTS
A Site Development Reqturements
1 General Reqturements
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Engineering Division
a Site development plans for all site developments shall be approved
by the City Engineer prior to construction
b Site developments, not including single family residential, shall
include any project that affects public water, wastewater, storm
drainage, sidewalks, or paving facilities
c All sidewalks in new developments shall be a mrmmum of five (5)
feet from the back of curb, two (2) feet from the edge of the public
nghts-of-way and shall not be in any utility easements
d All site developments shall conform to the requirements of these
Standards, the latest version of the International Code Series, as
amended, and all applicable rules and regulations of the City of
Fnendswood.
C. All wastewater, drainage, and paving site development
improvements, up to and including the connection to the public
system, shall be privately owned, operated, and maintained All
water site development improvements up to but not including the
meter and meter vault, shall be privately owned, operated, and
maintained
f —Restore the City of Fnendswood rights-of-way or easements to
existing or better condition than that prior to start of work
g Private utilities and seance lines shall be placed in an easement on
the property being served
Streets that change direction a mtmmum of mnety(90) degrees
will require a different name
2 Design Review Requirements for Site Development Plans
a All site development plans for proposed developments shall be
submitted to the Community Develo�pPment Department for
approval prior to construction Site defelopment plans shall show
all proposed water, wastewater, paving parking, drainage, street
signage, streetlight locations, flood protection facilities, and
sidewalks with approved ADA ramps locations, and a traffic
control plan
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b A traffic impact study shall be required for any development
proposal expected to generate traffic volumes that will
significantly impact the capacity and/or safety of the street system
All proposed developments generating volumes of five thousand
(5,000) trips per day or greater shall abide by thus criterion The
trip estimate shall be based on the latest version of the Institute of
Transportation Engineers' Trip Generation Manual
c The developer should first schedule a Development Review
Committee (DRC) meeting with Community Development
Department staff. At this meeting, infrastructure issues and the
feasibility of developing the site will be discussed
d The developer shall prepare a site plan for submittal to be rAviewed
by staff The developer shall consult with staff until all significant
issues surrounding the proposed site plan and development are
resolved, prior to proceeding to the Planning and Zoning
Commission.
1) The submittal for the site plan requires five (5) copies of
the following
S S� � � a) Cover Sheet
to Site Plan
c) Landscaping Plan
�\ \ d) Building Elevation Plan
C) Photometric Plan
Z
�., 2) and two (2) copies of
a) Drainage Plan
to Utility Plan
C) Grading Plan
d) Storm Water Pollution Prevention Plan
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e The final site plan will be presented to the Planning and Zoning
Commission by City Staff for consideration The Planning and
Zoning Commission reviews the final document for completeness
and public awareness
f The final site plan submittal to be provided to Community
Development Department staff at least ten (10) days prior to the
next regularly scheduled Planning and Zoning Commission
meeting
g Once the site plan is approved, the developer may begin the
building permitting process Approval from the appropriate
drainage entity is required prior to the issuance of building permits
h Three (3) copies of the site development plans shall be submitted
to the Building Official for review The City will typically respond
widen two (2)to four (4) weeks of the initial submittal
i When plan changes are requested, two (2) copies of the rerased site
development plans shall be submitted to the City for review, which
will ultimately result in the reissuance of any applicable permit(s).
3 1361ding Slab Elevations — Minimum building slab elevations shall
conform to the requirements of the City of Fnendswood Flood Damage
Prevention Ordinance and latest adopted flood zone maps
4` Water Service — Water service lines and meters shall be sized in
accordance with requirements set out in the Waterline Distribution System
—Design Requirements
5 Sanitary Sewer Service — Sanitary sewer service leads are rurally
installed during construction of the public sanitary sewer When sanitary
sewer service lead is to be installed for a site development, fer to the
Wastewater Collection System Design Requirements All lots, tracts, or
reserves shall be connected directly to a public sanitary sewer by a single
lead, except as specifically approved by the City Engineer The City
Department of Public Works shall be contacted for all sanitary sewer
connections for commercial projects.
6 Site Drainage Requirements — All commercial, industnal, office,
recreational, and multi-family tracts shall have an internal drainage
system The internal drainage system shall collect all site runoff and
direct it into a private storm sewer system that shall connect to the public
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drainage facilities in the area Any exceptions require specific approval
from the City
a The internal site storm sewer shall be connected to a public storm
sewer at a manhole or at an inlet adjoining the site The site
drainage outfall shall be connected to the nearest existing drainage
system with adequate capacity to serve the drainage area Where
extension of the existing drainage system is required, all costs for
extension shall be the responsibility of the developer
b All internal facilities shall be designed by a Professional Engineer
licensed to practice engineering in the State of Texas, and shall be
sized to drain the site in accordance with these standards
C. Drainage calculations shall be submitted with all site development
plans. Additional supporting data may be required by the City
d. When the site drains directly into a Galveston County or Huns
County facility, and/or into a TxDOT or county rights-of-way, the
appropriate governmental entity(s) shall approve the site
development connection to the public facilities
7 Dnveways--
It is desirable to minimize the number of non-residential driveways
on all streets in order to reduce the number of"nflict points and
facilitate traffic flow It is recognized, however, that certain
existing tracts may not be able to fully comply with the following
standards due to limited frontage or other constraints
b When compliance with these criteria is precluded for any reasons,
attempts should be made to obtain alternative access where
feasible, including joint access driveways, access easements to
adjoining properties, or access to intersecting streets
c If it can be demonstrated to the City Engineer that sufficient
attempts to secure alternative access have been made, and that such
access is still not possible, the City Engineer may accept a Traffic
Impact Analysis performed by a Professional Engineer licensed to
practice engineering in the State of Texas If approved, the
analysis will be used to allow a deviation to the driveway spacing
requirements indicated herein
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d Residential driveways shall be a mtmmum of twelve (12) feet wide
and a maximum of twenty-five (25) feet wide at the nghts-of-way
line, unless otherwise approved by the City Engineer, and should
be placed at least twenty-five (25) feet away from the property line
at the intersection of two (2) streets and at least five (5) feet from a
property line between two (2)properties
e Residential lots must have a mimmum of one hundred(100) feet of
frontage in order to be eligible for a circular driveway on the lot,
and the two (2) driveways shall have at least forty-five (45) feet of
separation between them from the inside edges of driveways
f Non-residential driveways shall be a mimmum of twenty, ve (25)
feet wide and a maximum of thirty-five (35) feet widek, Non-
residential driveways shall be spaced with a minimum of fifty(50)
foot separation
g. Non-residential driveways on mayor thoroughfares/boulevard
streets shall be placed no closer than one hundred (125) feet from
the ultimate curb line of the intersecting mayor thoroughfare or
boulevard street Non-residential driveways on collector/ minor
streets are to be placed no closer than seventy-five (75) feet from
the ultimate curb line of the intersecting mayor
thoroughfare/boulevard street Non-residential driveways on
- _ mayor thoroughfares/boulevard streets are to be placed no closer
titan seventy-five (75) feet from the ultimate curb line of the
intersecting collector commercial/minor street
h For purposes of determining the separation distance, the back of
curb or edge of street shall be used in conk uictton with the edge of
driveway which is closest and parallel to the street from which the
measurement is to be taken
1 Non-residential tracts with less than one hundred fifty(150) feet of
frontage on a public street shall have no more than one (1)
driveway Non-residential tracts between one hundred (150) feet
and three hundred twenty (320) feet of frontage on a public street
shall have no more titan two (2) driveways Non-residential tracts
between three hundred twenty-one (321) feet and six hundred
(600) feet of frontage on a public street shall have no more titan
three (3) driveways Non-residential tracts with over six hundred
(600) feet of frontage on a public street shall have the number of
Revised 07/01/2017 Section VI Page 6 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
driveways specially designated and specifically approved by the
City
Non-residential driveway connections to the public street shall be
approved and inspected by the City, TxDOT, county
representative, or appropriate entity
k Driveway radii shall not extend beyond the projection of a property
line perpendicular to the back of the curb
1. Driveways shall be installed according to the latest version of the
City of Fnendswood Standard Details and Technical
Specifications
M. Driveways shall be evaluated with respect to location of existing or
proposed signage, landscaping, and structures for adequate sight
distance.
n A note stating, "Access to adjacent property and common
driveways may be regmred" shall be placed on the site plan
00��,Curb returns for driveways shall be, at a mimmum:
S
—L) For residential driveways
a) Five (5) feet on local streets less�han twenty-nght
(28) feet in width
\\ \
to Ten(10) feet on collector streets, mayor
thoroughfares and boulevards, and local streets
greater than twenty-eight(28) feet in width.
2) For non-residential driveways:
a) Twenty-five (25) feet on local streets less that
twenty-eight(28) feet in width 0or
to Thirty-five (35) feet on collector streets, major
thoroughfares, boulevards, and local streets greater
titan twenty-eight(28) feet in width
Revised 07/01/2017 Section VI Page 7 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
8 Fire Lanes
a Fire lanes shall be required on all multi-family and non-residential
tracts if any part of a building is greater than one hundred fifty
(150) feet from either a fire lane, private street, or public street
nghts-of-way
b Fire lanes shall be either twenty (20) feet wide with a twenty-five
(25) foot radius or twenty-five (25) feet wide with a twenty (20)
foot radius
c Fire lanes shall be constructed using the same pavement structural
requirements as a public pavement. Alternate matenal\may be
used with specific approval from the City Engineer
d. Fire lanes shall be designed to drain in compliance with the Site
Development Requirement
C. Fire lane markings shall be provided as specified in the
Fnendswood Code of Ordinances.
f An emergency velucle tum-around, whether a cut-de-sac of a
radius required by the Fire Marshal or a T-head at least one
hundred twenty(120) feet to length, shall be required under certain
conditions
9 Controlled Access Gate Requirements
a Plans for access control systems shall be submitted to the Fire
Marshal's Office and approved prior to construction
b All access control gates shall have emergency means of operation
in the event of power loss
c Access control gates shall provide a clear, passable width of at
least twenty(20) feet
d A Knox® key switch shall be provided for all controlled access
gates The key switch shall operate all gates
e A Knox®padlock shall be provided for all non-motonzed gates
Revised 07/01/2017 Section VI Page 8 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
f The location of the key switch shall be approved by the Fire
Marshal's Office
g The owner or homeowners' association shall maintain all parts of
the access system and keep them in good working order
h The Fire Marshal's Office and Police Dispatch shall be notified
immediately of any damage to the access system that hinders
access including but not limited to, damage to the key box, lock,
and gates.
t. Access gates shall be far enough back to prorade at least forty(40)
feet of stacking space.
10 Storm Water Pollution Prevention Plan
a. A storm water pollution prevention plan shall be provided for all
site development projects
b. Filter fabric fence shall be installed at the perimeter of the site
before construction begins
c Once construction is complete, the filter fabric fence may be
removed, provided a mimmum of five (5) feet of hydro-mulch or
sod shall be installed at the back of all curbs, or other Best
Management Practices, shall be implemented and/or installed
d Refer to the Storm Water Ordinance for additional requirements
11 Parking Lot Guidelines
A parking lot layout is required to ensure that adequate off-street parking
is provided with the construction, alteration, or remodeling of any
building
a Concrete pavement thickness shall be a mimmum of five (5) inches
with eight (8) inches of stabilized subgrade Reinforcement shall
be Grade 60, fy= 60,000 psi, #4 deformed reinforcing bars spaced
at sixteen(16) inches center to center both ways and nummum lap
lengths of eighteen(18)inches
b Hot Mix Asphalt Concrete pavement thickness shall be a nummum
of two (2) inches with eight (8) inches of stabilized crushed
Revised 07/01/2017 Section VI Page 9 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
concrete or limestone and six (6) inches of lime-stabilized
subgrade
c Off-street parking spaces shall be located on the same lot, tract,
parcel, or premises as the use being served, or on other property of
the same or less restrictive zoning classification that the owner of
the premises being served has a continuing right to use for parking
When the off-street parking spaces are not located on the same lot,
tract, parcel, or premises being served, the distance from the center
of the parking lot to an entrance to the building, shall not exceed
five hundred (500) feet in distance measured along the shortest
available pedestrian route with public access
d Any existing building that is enlarged, structurally altered, or
remodeled by more than fifty (50) percent as it existed shall be
accompanied by off-street parking for the entire building When
the enlargement, structural alteration, or remodel is not increased
or changed by more titan fifty (50) percent, additional off-street
parking shall only be required for the increased or changed floor
area
e Existing parking spaces may not be used to satisfy additional off-
street parking requirements unless, the existing spaces exceed the
—number recommended for the building or use for which the
existing spaces are associated
f The number of off-street parking spaces required for each building
or use shall be determined by reference to the Parking Group Table
AFornputed n Appendix C—Design Criteria Manual Where several different
roperty uses will share a point parking area, the parking should be
based upon the overall development
ZU
g The design and dimensions of off-street parking areas shall be in
accordance with the following table of minimum dimensions
Mnmmum stall width shall be nine feet, excew-lor residential and
all-day office parking which may utilize stalls eight and one-half
(8 5) feet in width, proraded that mimmum aisle widths are
increased by one (1) foot. In addition, the dimensions of up to
twenty(20)percent of the total number of off-street parking spaces
may be reduced to eight (8) feet in width and sixteen (16) feet in
depth to accommodate compact automobiles (such spaces must be
so marked) All dimensions below are in feet
Revised 07/01/2017 Section VI Page 10 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
Angle
de ees
a, 35° 45° 66 90,
Stall,parallel to aisle 230 180 127 104 9 0
Stall,perpendicular to aisle 90 165 190 200 18 0
Aisle width, one-way 120 120 120 160 24 0
Aisle width, one-way 22.0 220 220 240 24 0
Cross aisle, one-way 11.0 11.0 110 110 11 0
Cross aisle,two-way 220 22.0 220 220 220
Refer to Appendix B—Figure 8 of this Design Criteria Manual
for Off-street Parking Diagrams
h. Off-street parking spaces shall be clearly marked Parking spaces
abutting an adjoining property line or street nghts-of-way shall be
provided with wheel guards or bumper guards located such that no
part of a normally parked velucle will extend beyond the property
line. When wheel guards are used, they shall be centered two and
one-half (2 5) feet from the property line for ninety (90) degree
parking, two and one-third (2.3) feet for sixty(60) degree parking,
and two (2 0) feet for forty-five (45) degree and durty, (30) degree
parking
1 The parking layout and design of all off-street parking areas shall
be approved by the City Engineer The City Engineer shall
determine that spaces provided are usable, and that the circulation
pattern within the area 1s adequate
One ADA — compatible space 1s required for every twenty-five
(25) regular spaces (full sized or compact sized), or for any
increment thereof
12. Pipelines
All new Pipelines shall be a mlmmum depth of ten (10) foot in depth to
the top of the pipe in all new or existing road nghts-of-way
2.0 EXECUTION
201 RESEARCH REQUIREMENTS
A Discuss project concepts outhrung proposed features and usage with the City
B Research existing utility and rights-of-way information
Revised 07/01/2017 Section VI Page 11 of 14
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Department of Public Works SITE DEVELOPMENT
Engineering Division
C Verify that no restrictions exist that could result in demal of the project concept
202 DESIGN ANALYSIS—Reserved
203 DRAWINGS
A The site development plan shall include layout sheet(s) providing a photometric
layout of the site complete with location of proposed lights, information on light
heights, and type of light standard proposed
B The site development plan shall include an overall drainage layout showing
1 Total area (in acres) of site to be drained.
2 Area (in acres) drained to each inlet.
3 Contours or an adequate number of spot elevations to indicate area drained
to eachrnlet
4 Top elevation and flowlme elevation at each inlet.
j 5 Gradient and size on each private stone sewer
L 6 Computations to support pipe sizes and grades shown [mimmum private
stone size shall be ten(10)inches]
7 Design velocity for storm sewers shall be three (3) feet per second
8 A TxDOT or a county permit shall be required for drainage affecting a
state or county owned/maintained facility Submit permit with site plan
9 The drawings shall be prepared and sealed by a Professional Engineer
licensed to practice engineering in the State of Texas
10 The size and location of any required detention facility shall be indicated
on the plans, along with the size and location of the outfall structure
C All site development plans shall be approved by the appropriate drainage entity
prior to City approval being granted
D The site plan shall show all water and sewer service lines with sizes, grades and
alignments, and illustrate any proposed ties into the existing public lines
Revised 07/01/2017 Section VI Page 12 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
E The site development plan shall show all parking areas
F The site development plan shall indicate the types and location of all existing and
proposed landscaping Landscaping shall meet the minimum requirements as set
forth in the Zoning Ordinance If no trees exist, a note to that effect shall be
placed on the site development plan. The Qualified Tree List can be found in
Appendix D of this Design Criteria manual.
G The site development plan shall show the location, height, and area of all
proposed buildings All setback lines as required by the Zoning Ordinance shall
also be shown with a dimension called out on the site plan between the building
and the site boundary
H. The land use for all adjacent property shall be shown on the site development
plan.
I. All parking lot pavements for site development plans shall be engineered to
provide for operation by velucles normally expected to utilize the parking area,
and the duckness of paving shall be based upon the soil conditions underlying the
parking area A Professional Engineer licensed to practice engineering in the
State of Texas shall certify the design submitted for approval
J Concrete sidewalks ([a mtmmum of four (4) feet wide and four (4) inches duck
with steel reinforcement] shall be required along all street frontages The design
and installation of such sidewalks shall comply with Texas Accessibility
Standards Architectural Barriers requirements and the City of Fnendswood
Standard Details and Technical Specifications The location of all proposed and
existing sidewalks shall be shown on the site development plan
K Show location of signs, screening walls or fences [indicate height, maximum
eight(8) feet], and dumpsters (with appropriate screening)
L If the site is located within the Community Overlay District, a plan note shall be
made on the site development plan indicating such, and that the site development
will conform to the Zoning Ordinance requirements.
M No improvements in or to public nghts-of-way shall be made without prior
approval from the City Engineer This includes planting trees in public nghts-of-
way, widun residential and non-residential areas, or in any utility or drainage
easement Only Class 2 and Class 3 trees listed in Appendix D of dus Design
Criteria Manual may be planted in public nghts-of way if such planting is
Revised 07/01/2017 Section VI Page 13 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works SITE DEVELOPMENT
Engineering Division
approved by the City Engineer No trees of any class maybe planted inutility or
drainage easements
FOUNDED
1895
lE
_X A S ` J
Revised 07/01/2017 Section VI Page 14 of 14
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK A
Engineering Division Attachments
APPENDIX A
Attachments
ATTACHMENTS
1. Lift Station Start-up Log
2. Design Criteria Modification Form
3. GCCDD Fonn DR-001
Revised U7/U1/2O17 Appendix Page 1 of
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX A
Engineering Division Attachments
City of Friendswood Lift Station Start-Up Log
Date Side Pum Number
Address Pum Desi nation
Name Plate Data
Pump Data
Pump Make Size
Pump Model 1DH
Serial Number Impeller Number or Size
Flow in GPM
P mp Motor Data
Make(if applicable) Phase
Serial Number if applicable) Name Plate Votla es
RPM Name Plate Full Load Amps
SerNce Factor Pump is wred for
Start-Up Trial Data
Insulation Test Pre-Start Volta a Test
L1 to CND L2 to CND L3 to CND L1-L2 L2-L3 L3-L1 L1-GND L2-Gt�D L3-Gt�D
M M M V V V V V V
Run Votla a Test Run Am era a Tesl
Phase Rotation L1-L2 L2-L3 -3-L1 L1 L2 L3
ABC CBA
Operator
Revised 07/01/2017 Appendix A Page 2 of 6
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX A
Engineering Division Attachments
CITY OF FRIENDSWOOD
DESIGN CRITERIA MODIFICATION FORM
Modifications to standards identified in the Design Criteria Manual may be permitted by
the City of Friendswood's City Engineer. The modification proposal must be submitted
by a Professional Engineer licensed by the State of Texas and shall follow generally
accepted engineering standards for traffic, sidewalk and other infrastructure as applicable,
and such proposal contains the following information and substantiates the findings in
Paragraph 4 below. If an appeal to the City of Friendswood City Engineer decision is
This entire form must be completed in its entirety. If form is
submitted incomplete, it will be administratively rejected.
requested, the Construction Board of Adjustment (hereinafter referred to as "the City")
will review that appeal.
PROJECT NAME:
PROJECT ENGINEER:
SUBMITTAL DATE:
SUBDIVISION NAME:
MODIFICATION LOCATION:
1. Set forth the proposed deviation to the technical standard.
SPECIFIC PROPOSED DEVIATION FROM TECHNICAL STANDARD:
Revised 07/01/2017 Appendix A Page 3 of 6
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK A
Engineering Division Attachments
2. Set forth the impact such deviation has on speed differential and street capacity,
the likelihood of accidents,the long teen maintenance and operation effect,the
degree of functionality and efficiency, the technological advancements involved,
and other relevant matters.
IMPACT OF DEVIATION:
3. Show a comparison of the technical standard to the proposed deviation with
respect to overall safety and quality, speed differential, street capacity, existing
and projected accidents, long-teen maintenance and operation, degree of
functionality, degree of efficiency, technological advancements, and other
relevant matters.
COMPARISON OF TECHNICAL STANDARD TO PROPOSED DEVIATION:
4. Describe all mitigating improvements that reduce the negative impact of the
proposed deviation on overall safety and quality, speed differential, street
capacity, accident occurrences, long-teen maintenance and operation, degree of
functionality, degree of efficiency and demonstrating the degree to which the
proposed deviation detrimentally affects the foregoing. Other relevant factors,
including technological advances, should be explained by describing bow they
will affect the proposed development. Mitigating improvements can include but
are not limited to,traffic control devices, pavement improvements, added
acceleration or deceleration lanes, or reservoirs, and other on-site improvements.
MITIGATING IMPROVEMENTS THAT REDUCE NEGATIVE IMPACT:
SUINIINLXR17 & CONCLUSION/RECOl\ENIENDATION FOR MODIFICATION:
Revised U7/U1/2O17 Appendix Page 4of6
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX A
Engineering Division Attachments
List of Supporting Documentation Attached? Yes No
Engineer's Name
Engineering Firm
Address
City,ST,ZC
Telephone Seal of Professional Engineer
Department of Public Works Use ONLY
Reviewed By:
Date
Modification Request Approved / Denied By:
Copies of Backup Information/Notes Attached
City Engineer Date
Revised 07/01/2017 Appendix A Page 5 of 6
City of Friendswood Design Crit IvIanual
Department of Pub aWo m #mNDa a
Engineering Division Attachments
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Revised ()7/()1/2()17 a :a Page 6 of
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK B
Engineering Division Figures
APPENDIX B
Figures
Figure
1. Geometric Street Design Standards
2. Divided Roadway Cross Sections —Urban
3. Roadway Tapers For Subdivision Streets
4. Undivided Roadway Cross Sections —Urban
5. Typical Length of Median and Median Opening
6. Median Nose and Left Tuna Bay Design
7. Cul-de Sac
8. Driveway spacing and other measurements
9. Off-Street Parking
Revised U7/U1/2O17 APPENDLK B Page 1 of 10
City ofFnendswood Design Criteria Manual
Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page 2 of 10
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Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page of 10
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Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page of 10
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Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page 5 of 10
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Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page 6 of 10
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Department of Public Works APPENDIX B
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Revised 07/01/2017 APPENDIX B Page 7 of 10
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Department of Public Works APPENDIX B
Engineering Division Figures
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Revised 07/01/2017 APPENDIX B Page 9 of 10
City ofFnendswood Design Criteria Manual
Department of Public Works APPENDIX B
Engineering Division Figures
FIGURE 9
OFFSTREET PARKING
NOTES:
1.MINIMUM STALL WIDTHS SHALL BE NINE
(9)FEET,EXCEPT FOR RESIDENTIAL w �
ALL-DAY OFFICE PARKING WHICH MAY c-
UTILIZE EIGHT AND ONE-HALF(BY) a 00 DO2 FEET IN WIDTH,PROVIDED THAT MINIMUM AISLE WIDTHSARE INCREASED BY ONE(1)FOOT IN ADDITION,THE DIMENSIONS OF UP TO TWENTY(20) wheel PERCENT OF THE TOTAL NUMBER OF Gu23 � O 24'PARKI NG SPACES MAY BE REDUCED TO 4EIGHT(8)FEET IN WIDTH AND SIXTEEN(16)IN DEPTH TO ACCOMMODATE
COMPACT AUTOMOBILES. 00 2. PARKING SPACES ABUTTING AN
ADJOINING PROPERTY LINE OR STREET RIGHTS-OF-WAY SHALL BE PROVIDED 00
WITH WHEEL GUARDS SO LOCATED THAT
NO PART OF A NORMALLY PARKED
VEHICLE WILL EXTEND BEYOND TH E 900 ANGLE
PROPERTY LINE.
I t Wheel 00 1s' O O O ^ O
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Revised 07/01/2017 APPENDIX B Page 10 of 10
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX C
Engineering Division Parking Group Table
APPENDIX C
Parking Group Table
Parking Use Category Parking Spaces*
Accommodation
Accommodations: 1 25 spaces per sleeping room or unit,plus the following meeting per
banquet space
-less than 10 sq It per sleeping room=none,
- 10 to 20 sq It per sleeping room=30 spaces per 1,000 sq It GFA,
-21 to 50 sq It per sleeping room and over 50 sq It per sleeping
room=20 spaces per 1,000 sq It GFA
1 25 spaces per sleeping room or unit,plus 10 spaces per 1000 sq It GFA
Accommodations with food: restaurant lounge,plus the following for meeting/banquet space
-less than 10 sq It per sleeping room=none,
- 10 to 20 sq It per sleeping room=30 spaces per 1,000 sq It GFA,
-21 to 50 sq It per sleeping room and over 50 sq It per sleeping
room=20 spaces per 1,000 sq It GFA
Adult Establishment 1 space for every 4 seats or 1 space for every 50 sq It of customer service
area,wluchever is greater
Agricultural, Forestry, Fishing, and
2 per site plus 1 per 1,000 sq It enclosed floor area
Hunting Uses
Amusement and Recreation
Industries
Arcade: 1 space per 200 sq It GFA
Driving/Archery/Shooting Range: 1 space per 200 sq It GFA of indoor facilities plus 1 space per tee or target
Fairground,Exhibition, Carnival: 1 space per 500 sq It of outdoor site area plus 1 space per 4 fixed spectator
seats
Fitness and Recreational Sports: 7 spaces per 1,000 sq It GFA
Golf Course: 1 space per 150 sq It GFA of indoor facilities plus 5 spaces per green
Miniature Golf: 1 space per 200 sq It GFA of indoor facilities plus 1 5 spaces per hole
Rodeo, Circus,Auto/Motorcycle 1 space per 3 spectator seats
Racing:
1 space per 200 sq It GFA of indoor facilities plus 1 space per 2 persons
Skateboarding, Water Slide: design capacity of outdoor facilities
Sports fields,Swimming Pools, 1 space per 100 sq It GFA of indoor facilities plus 1 space per 4 persons
Private Parks, and Playgrounds: design capacity of outdoor facilities,including both participants and
spectators,as applicable
Tennis Courts and Other Sports 2 spaces per court
Courts:
Arts, Entertainment, and
Recreations
Arena: - 33 spaces per seat
Baseball Stadium: - 35 spaces per seat
Football Stadium: - 31 spaces per seat
Revised 07/01/2017 Appendix C Page 1 of 4
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX C
Engineering Division Parking Group Table
Parking Use Category Parking Spaces*
Arts, Entertainment, and
Recreations (cone):
Theater(live performances): - 40 spaces per seat
All Other Public Assembly: - 25 spaces per person in permitted capacity
Convention Centers,
Meetmg/BanquetFacilities, not -up to 25,000 sq It =30 spaces per 1,000 sq It GFA,plus
within a hotel or in a hotel,but - 25,000 to 50,000 sq It =20 spaces per 1,000 sq It GFA,plus
exceeding 100 sq.ft.per sleeping -50,000 and 100,000 sq It =10 spaces per 1,000 sq It GFA,plus
room: - 100,000 or more sq It =6 spaces per 1,000 sq It GFA
Automotive Repair 3 spaces per service Ley(service bays not included as parking)
Broadcast and Telecommunications 1 space for each 300 sq It GFA
Car Wash 2 per wash bay plus 3 stacking spaces per Ley
Civic, Social, and Fraternal 1 space for each 300 sq It GFA
Associations:
Educational Services (based on
maximum design capacity)
Daycare Center orPre-
3 spaces per person licensed capacity enrollment
Elementary:
Elementary,Middle Schools: Higher of 2 spaces per seat in auditorium or gym and 25 spaces per student
Secondary Schools: Higher of 3 spaces per seat in auditorium or gym and 3 spaces per student
To be established based on a study of parking needs prepared specifically for
College or University: the subject institution
Other Classroom based: 6 spaces per 1,000 sq It GFA,
Other Not Classroom based: 10 spaces per 1,000 sq It GFA
Finance and Insurance
-up to 25,000 sq It =3 8 spaces per 1,000 sq It GFA,plus
General Business Offices: - 25,000 to 100,000 sq It =3 4 spaces per 1,000 sq It GFA,plus
- 100,000 or more sq It =2 8 spaces per 1,000 sq It GFA
Consumer Service Offices: 4 6 spaces per 1,000 sq It GFA
Data Processing, Telemarketing,
6 spaces per 1,000 sq It GFA
Operations:
Food Service
Restaurant: 10 spaces per 1,000 sq It GFA,
Restaurant bar area: 15 spaces per 1,000 sq It GFA,
Fast Food: 8 spaces per 1,000 sq It GFA,
Take Out andDelivery Only: 3 spaces per 1,000 sq It GFA,
Night Clubs: 15 spaces per 1,000 sq It GFA
Gas Station 1 space for each side of a gasoline pump unit
Health Care and Social Assistance
Medical Offices(not on hospital
4 5 spaces per 1,000 sq It GFA
campus):
Medical Offices(on hospital 4 spaces per 1,000 sq It GFA
campus):
Revised 07/01/2017 Appendix C Page 2 of 4
City of Fnendswood Design Criteria Nlanual
Department of Public Works APPENDLK C
Engineering Division Parking Group Table
Parking Use Category Parking Spaces*
Hospitals, Nursing, and Residential
Care Facilities
To be established based on a study of parlang needs prepared specifically for
Hospital Aledical Center:
the subject institution
Elderh Housing: 1 space per dwelling unit
Congregate Care AssistedLiviing: 3�spaces per dwelling nit
Group, Convalescent, and spaces per bed
Nursing Hone:
3 spaces for each�employees on largest shift,or 1 space per 601 sq ft
Information Services GFA
Cinemas: - Single screen
Ito screens
-�to l0 screens
-
Over l0 screens
Mining, Utilities, Construction,
CTFA spaces for each 3 employees on largest shift,or 1 space per 600 sq ft
Manufacturing, Transportation, and
Warehousing
1 8�spaces per 1,()()()sq ft GFAplus regmred Farling spaces for office,
Industrial tllaini!fachn'iing: sales,or similar use mfliere those uses exceed 100 o GFA
Mobile Home spaces per trailer unit
Non-Store Retailers 1 space for each 2,000 sq ft GFA
Other Services 1 space for each]fi()sq ft GFA
Professional, Scientific, and
Technical Services;Management of
Companies and Enterprises;
Administration/Support Services
General Business Offices: -up to sq ft =3 8 spaces per sing sq ft GFA,plus
to 100,000 sq ft =3 4 spaces per 1,000 sq ft GFA,plus
- 100,000 or more sq ft =2 8 spaces per 1,000 sq ft GFA
Public administration 1 space for each 300 sq ft GFA
Real Estate, Rental, and Leasing 1 space for each 3011 sq ft GFA
Religious Organizations 4 spaces per seat
Residential Uses
Single Fanulr Dwellings -less than 3,01i()sq ft =2 spaces per dwelling unit,
-more than 3,000 sq ft =3 spaces per dwelling nit
Alultn-Fanuly Dwellings Rental: - 1 space per dwelling unit for efficiency nits,
- 1 3 spaces per dwelling unit for 1 st bedroom in units math 1 or more
bedrooms,plus 2�spaces for each additional bedroom
Alultn-FanulyDrelings Owned: - 1 0 spaces per dwelling unit for efficiency units,
- 1 73 spaces per dwelling unit for the 1 st bedroom in nits math 1 or
more bedrooms,plus 2�spaces for each additional bedroom
1 space per dwelling nut for efficiency and 1 bedroom nuts,plus � spaces
Rentals UnnersihDistrict for each additional bedroom
Revised 07/01/2017 Appendix C Page 3 of 4
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX C
Engineering Division Parking Group Table
Parking Use Category Parking Spaces*
Retail Trade 4 spaces per 1,000 sq It GFA
Shopping Centers -6 spaces per 1,000 sq It GFAupto 200,000 sq ft,
-5 5 spaces per 1,000 sq It GFA over 200,000 sq It
Transit and Ground Passenger 1 space per 100 sq It GFA
Transportation; Scenic &Si htseein
Truck Transportation;Warehousing 1 space for each 1,000 sq It non-office floor area,plus 1 space for each
& Storage 300 sq It office area
Vehicle Dealers 1 space for each 5,000 sq It of lot area
Wholesale Trade 1 space per 2,000 sq It gross floor storage per sales area
*Staff may approve a 5% deviation from the recommended parking requirements, unless an alternative
plan is approved by the Planning and Zoning Commission.
Revised 07/01/2017 Appendix C Page 4 of 4
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX D
Engineering Division Qualified Tree List
APPENDIX D
Qualified Tree List
Common name Botanical name Class N11 Site Liaht Size Foilage
Bald Cypress Taxodium disthchum 1 N 2, 3 2 1 D
Bur Oak Quercus macrocarpa 1 N 2 1 1 D
Cedar Elm Ulmus crassifolia 1 N 2 1 2 D
Drummond Red Maple Acer rubrum var dnumnondii 1 N 2 1 2 D
Eastern Redbud Cercis canadensis 1 N 2 2 2 D
Live Oak Quercus virgimana 1 N 2 1 1 SE
Overcup Oak Quercus lyrata 1 N 2, 3 1 1 D
Pecan Carya illmoensis 1 N 2 1 1 D
Possumhaw Holly Ilex decidua 1 N 2 1, 2 3 D
Shumard Red Oak Quercus shumardii 1 N 2 1 1 D
Southern Magnolia Magnolia grandiflora 1 N 2 1 1 E
Swamp Chestnut Oak Quercus michhauxn 1 N 2, 3 1 1 D
Sweet-Bay Magnolia Magnolia virgimana 1 N 2 2 2 E
Wax Myrtle Myricacenfera 1 N 2, 3 1 3 E
American Elm Ulmus americana 2 N 2 1 1 D
American Sycamore Platanus occidentalis 2 N 2 1 1 D
Anacua/Sandpaper Tree Ehrethaanacua 2 N 2 1 2 E
Arrow-wood Viburnum Viburnum dentatum 2 N 2 2 3 D
Black Hickory Caryatexana 2 N 2 1, 2 2 D
Black Walnut Juglans mgra 2 N 2 1, 2 1 D
Blackgum Nyssasylvatrca 2 N 2, 3 1, 2 3 D
Callery PearBraford Pyres calleryana 2 I 2 1 3 D
Carolina buckthorn Rhanarus carolimana 2 N 2 1, 2 3 D
Chalk Maple Acer leucoderme 2 N 2 2 2 D
Cherry Laurel Pnuius carolnnana 2 N 2 2 2 E
Chinese Elm Ulmus parvifolia 2 I 2 1 2 D
Chinquapin Oak Quercus muhlenbergn 2 N 2 1 1 D
Common Crapemyrtle Lagerstroemiamdica 2 I 2 1 3 D
Common Fig Ficus caeca 2 I 2 1 3 D
Common Persimmon Diospyros virgimana 2 N 2 1 2 D
Eastern Red Cedar Jurnperus virgintana 2 N 2 1, 2 2 E
Eve's Necklace Sophora affinms 2 N 1 1 3 D
Green Ash Fraxinus pennsylvantca 2 N 2, 3 1, 2 1 D
Huisache Acacia farnesiana 2 N 1 1 3 D
Loblolly Pine Pinus taeda 2 N 2 1 1 E
Mexican Plum Pnuius mexicana 2 N 1 1 3 D
Nuttail Oak Quercus nuttalln 2 N 2, 3 1 1 D
Ornamental Holly Ilex spp 2 I 2 1, 2 3 E
Paloverde Parkmsonmaaculeata 2 N 1 1 2 D
Revised 07/01/2017 Appendix D Page 1 of 4
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX D
Engineering Division Qualified Tree List
Common name Botanical name Class N11 Site Light Size Foilage
Parsley Hawthorn Crataegus marshalln 2 N 2 2 3 D
Post Oak Quercus stellata 2 N 2 2 1 D
Red Bay Perseaborbonma 2 N 2 2 2 E
River Birch Betula rugra 2 N 2, 3 2 2 D
Rough-leaf Dogwood Cornus drummondii 2 N 1, 2 3 3 D
Rusty Blackhaw Viburnum Viburnum rufidulum 2 N 2 2 3 D
Sassafras Sassafras albidum 2 N 2 2 2 D
Scarlet(Red)Buckeye Aesculus pavma 2 N 2 2 3 D
Shagbark Hickory Carya ovata 2 N 2 1 1 D
Slash Pine Pinus elloittn 2 I 2 1 1 E
Snowbell Styraxamericana 2 N 2 1, 2 3 D
Southern Red Oak Qurcus falcata var pagoda 2 N 2 1 1 D
Sweetgum Lmgmdambar styraciflua 2 N 2 1 1 D
Texas Mountam-Laurel Sophora secundiflora 2 N 1 1 3 E
Texas Persimmon Diospyros vugimana(male) 2 N 1 1 3 D
Texas Pvstache Pistaciatexana 2 N 1 1 3 D
Texas Redbud Cercis canadensis texensis 2 N 1, 2 2 3 D
Water Hickory Carya aquahca 2 N 2, 3 1 2 D
Water Oak Quercus mgra 2 N 2, 3 1 1 D
Western Soapberry Sapmdus drummondii 2 N 2 1 2 D
White Ash Fraxinus amencana 2 N 2 1 1 D
White Oak Quercus alba 2 N 2 1 1 D
Willow Oak Quercus phellos 2 N 2, 3 1 1 D
Winged Elm Ulmus alata 2 N 2 1 2 D
Woollybucket Bum eha Bumehalanugmosa 2 N 2 2 2 D
Wright Acacia Acacuawnghtn 2 N 1 1 3 D
Yaupon Holly Ilex vomitona 2 N 2 1, 2 3 E
American Elderberry Sambucus canadensis 3 N 2 2 3 D
American Holly Ilex opaca 3 N 2 2 2 E
American Hombean Carpmus carolimana 3 N 2 2 2 D
Black Locust Robimapseudoacacia 3 N 2, 3 1 2 D
Black Willow Salixragra 3 N 3 1 2 D
Box-Elder Maple Acernegundo 3 N 2 2 2 D
Camphor-Tree Cmnamomum camphora 3 I 2 1 2 E
Catalpa Catalpabignomoides 3 N 2 1 2 D
Common Pear Pyrus commums 3 N 2 1 2 D
Eastern Cottonwood Populus deltomdes (male) 3 N 2 1 1 D
Flowering Crabapple Malus spp 3 I 2 1 3 D
Hercules-Club Prickly-Ash Zanthoxylum clava-hercuhs 3 N 1 1 3 D
Honey-Locust Gleditsiatnacanthos 3 N 2, 3 1 2 D
Japanese Yew Podocarpus macrophyllus 3 I 2 1 2 E
Japanese Maple Acerpalmatum 3 I 2 2 3 D
Loquat Enobotryajapomca 3 I 2 2 3 E
Mesquite Prosopis glandalosa 3 N 1 1 2 D
Revised 07/01/2017 Appendix D Page 2 of 4
City of Friendswood Design Criteria Manual
Department of Public Works APPENDIX D
Engineering Division Qualified Tree List
Common name Botanical name Class N11 Site Light Size Foilage
Mexican Buckeye Ungnadia speciosa 3 N 1 1 3 D
Red Mulberry Mores rubra 3 N 2 1 2 D
Sugar Hackberry Celhs laevigata 3 N 2 1, 2 2 D
Vitex Vitex agnus-castes 3 I 1 1 3 D
Water Tupelo Nyssaaquahca 3 N 3 2 1 D
Weeping Willow Sahxbabylomca 3 I 3 1 2 D
Arborvitae Thula spp 4 I
Arizona Ash Fra mus veluthna 4 I
Berlandier Ash Fra mus berlandienana 4 I
Chinaberry Mehaazedarach 4 I
Chinese Pistache Pistaciachmensis 4 I 2 1 2 D
Chinese Tallow Sapmm sebiferum 4 I
Eucalyptus Eucalyptus spp 4 1 1, 2 1 3 E
Golden-Ramtree Koelreutenapamculata 4 I 2 1 2 D
Japanese Black Pme Pinus thmbergi 4 I 2 1 2 E
Mnnosa(Si1ktree) Albimaluhbnssm 4 I
Mulberry Mores alba 4 I 2 1 2 D
Siberian Elm Ulmus pumila 4 I
Silver Maple Acer saccl a mum 4 I
Tuhp-Tree Linodendrontulipifera 4 I 2 1 1 D
Trees are divided into four classes. Class 1 and 2 trees are considered the most valuable in
enhancing the environment and are the most likely to prosper in the Friendswood area
Therefore, only Class 1 and 2 trees shall be approved as new plantings for a) city parks and
property, and parking lots and; b) for streets or other public right-of-ways, respectively, unless
otherwise approved by the City Engineer on the advice of an Urban Forester. Species that are
classified as shade trees will reach a height and size that will conflict with overhead powerlines,
permanent structures, or the canopy will exceed the limits of a confined space. Species that are
classified as small trees will not provide the protection or aesthetic impact of a large shade tree,
yet they are suitable for planting beneath powerlines and are good alternatives for areas of
limited space.
Class 1: For the most part this class is for trees that are native, will do relatively well in the
Friendswood area, have few diseases or pest problems, are easy to find in local
nurseries, and with few exceptions (redbud, possomhaw, and waxmyrtle) are larger in
size.
Class 2: This class is for trees that are mostly native, will still do well in the Friendswood area,
have little disease or pest problems, sometimes not quite as easy to find in nurseries, are
more varied in size, and in many cases are more suitable for wildlife. These trees tend
to have larger and messier fruit and/or are thornier than trees in Class 1. Some of these
trees are also more prone to some decay at maturity and might not do as well in
urbanized areas.
Class 3: This class starts to pick up more introduced species, the trees might or might not do as
well in the Friendswood area, require a little more maintenance and care, the natives
Revised 07/01/2017 Appendix D Page 3 of 4
City of Fnendswood Design Criteria Nlanual
Department of Public Works APPENDLK D
Engineering Division Qualified Tree List
might be harder to find in a nursery while the introduced species may be more readily
available and in some cases these trees are more prone to decay, disease and pest
problems.
Class 4: this class is exclusively introduced species. They may or may not do well in
Friendswood. If they do grow well they have the potential to become invasive species
and cause problems for local ecosystems and are more prone to decay, disease and pest
problems. NOT RECOMMENDED FOR PLANTINGS.
Classifications:
N—Native
I—Introduced
Site:
1 —Xerophytic (requires little water)
2 —Xlesie (requires moderate water with good drainage)
3 —_aquatic (tolerates poor drainage once established 3 years)
Light:
1 —Full Sun (requires a minimum of 6 hours of direct sunlight)
2 —Partial Sun (requires a minimum of 3 to 6 hours of direct sunlight)
3 — Shade (requires less than 3 hours of direct sunlight)
NOTE: Lower rating number on this scale is the minimum, but can use the nest higher
rating (i.e. a rating of 2 can also use the rating of 1, a rating of 3, can also use the ratings
of 1 and 2)
Size:
1 —60 feet and greater ultimate height (large shade tree)
2 —30 to 60 feet in ultimate height (medium tree)
3 —30 feet and less in ultimate height (small tree)
Foliage:
D — Deciduous (sheds leaves annually) If placed on the south and west walls will reduce
indoor temperatures in summer by shading the roof and walls. hi winter, these trees
allow sunlight through to help heat the building.
E — Evergreen (having green leaves/needles throughout the year) can create a wind break if
placed on the northwest side of a building.
SE— Semi evergreen
For example, the code for Live Oak is 1/N/2/1/1, which indicates that the Live Oak is a Class 1
species that is native to Texas, requires moderate water with good drainage, demands or tolerates
full sun, and will exceed 60 feet in ultimate height. As a shade tree, the Live Oak will provide
protection and has aesthetic impact but the tree is not suitable for planting beneath powerlines or
within confined spaces, or in streets or other public rights-of-waN.
Revised U7/()1/2217 Appendix Page 4of4
City of Pmvdsvootl D,,MMtm,Xq,mel
D,pvMml of PaW¢Was, APPENDIX P
CvOmewg@x sov D,,,,NwvDmtnetAmmunes
APPENDIX E
Downtown District Amenities
Sir eetscape furnishings, as required by City of Fir endswood Code of OrrLnances, Appendix C—
Zoning Orch ance for the Dowrrtown Disttrct are important functional elements and Merin es
They shoal d be of high quality, designed for outdoor us P and require minimal maintenance All
provided Amenities shall be permanently maintained by the property owner, including paved
walkways
SEATING
Seating should be durable and comfortable Shape edges and poorly designed or fabricated
furniture should be avoided Metal is the required material The sealing design should
complement other furnishings All sealing should be secured permanently to paved surfaces for
safety and to avoid vandalism The bench below is the preferred model, however, other benches
of similar size and features may be approved by the Planning and Zoning Commission
Manufacturer Webcoat Products
Product Metal benches
Model B5WBCLASSIC
Size 5'
Color/finish Black finish
Aluminum framew/contoured backs
TEES WELLS
Tree wells are an attractive way to protect trees planted in paved areas Appropriate tree grates
and tree wells should be similar to the following
TEES GRATES TEES WELLS
Manufacture Neenah Foundry Company
Product Tree grate
Model ASTMA-0$ Metropolitan Series
R,m,,d 07AlDpl7 APPENDIX Pegel if
City of Fmvdsvootl DeagoCmm,Meemel
D,pvMml of PaW¢Was, APPENDIX E
Ev®mewg@x son DownWwvDmrnctAmmunes
LIGHT POLES
Lighting plays an important part in the character, function, and security of a streetscape It
should be consistent with other streetscape elements and integrate the historic nature of the
Downtown District Light poles shall be the Bishop s Crook' style The light pole below is the
preferred model, however, other light poles of similar size and features may be approved by the
Planning and Zoning Commission
Manufacturer !1umen,
Product !equiv�ent/Teardrop F]ixmre
Color/finish t
etal halide or
D off or semi cutoff
t 7,000 to 8,000
rvalentthereof,0 K (Kelvm-
Lamp height maximum shall be 12' Lamp height minimum shall be 10' Lamp shall be
posmonedtowards the rights—of ay to illuminate the public walkway
Lamp height is the actual lamp height above ground measured at the bottom of the lamp fixture,
where the globe or bulb begins
TRASH RECEPTACLES
Trash receptacles shouldbe easily accessible for pedestrians mdtresh collection They must be
placed to be unobtrusive yet effective and their design should relate to other site furnishings
Trash receptacles should be firmly attached to paving to avoid vandalism They should include
covered tops and sealed bottoms to keep contents dry and out of sight at all times Appropriate
It ash receptacles should be similar to the following
Manufacturer Victor Starptaole
Product Trish receptacle
o
Model Sreclsres RB series
Coloramish BlackCrmsh
TGIC polyester powder coat
Reused UMM019 APPENDIX Peg,2if5
City of Pmvdsvootl D,,M tm,Xq,emel
D,pvMml of PaW¢Was, APPENDIX P
CvOmewg@x son DownWw,NN,,tAmmunes
PAVERS
Brick pavers must be used to construct the required brick paved sidewalk in accordance AND the
specifications below The paver color andpattern below is the preferred design, however, other
pavers of similar colors and patterns maybe approved by the Planning and Zoning Commission
Manufacturer Pine Hall Brick Company, me
Product Pavers
Model Pathway Series, Full Range
Size 4" Wx8" Lx2Yn" thick
Color Red
Pattern Str etcher Bond
Brick pavers must be set on a said base with a concrete border as stated below and shown on the
attached construction detail dramng No concrete or stamped concrete is allowed for the
sidewalksurface
Paverinstallation specs 5" off 0 sackcement stabilized said base
Nonwoven fabric weed block
1" ofASTM 633 bedchng said
2 Yn" thick brick unit paver
Polwaenc5ointsand
Masonry hand troweled edge restrarms reinforced AND b3 rebar
If the pavers are apart of a drive surface forvehmular taRiq an 8" 2 0 stabilized base drive
surface compacted 95% must be installed below the 5" of 2 0 sack cement stabilized said base
R,m,,d 0EAlnOl7 APPENDIX Peg,3if5
City ofFnendswood Design Criteria Manual
Department of Public Works APPENDIX E
Engineering Division Downtown District Amenities
PAVER CONSTRUCTION DETAIL
POLYMERIC& 040INTPLLER xD—ELLED
EDT3E E NNTS
E%-TH-PPVER RE INFO RCED ffT RE.
.TM WL BE..SWD
NONWOVEN FMMC E' 40 Wdt LEMEN!
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PEDESTRIAN SURFACE DEPTH
COMPn Twa46 s•
0'I 0 STABI LVED B48E VENILWA4 0.
DRIVE SU� DEPTH
WMPALTED EM
9� �vwx wwxv o
Revised 07/01/2017 APPENDIX Page 4of5
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City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIN F
Engineering Division Culvert and Driveways
APPENDIX F
Culverts and Driveways Policy
The purpose of this policy is to establish guidelines, proceditres, and standard practices
regarding installation, maintenance, and repair of culverts and driveways in new and old
subdivisions with open ditches.
L REPLACEMENT OF DRIVEWAY/CULVERTS DUE TO REPAIRS
A. If a failure occurs on an existing paved driveway located within the Cite rights-of-
way due to a defect in the existing public infrastructure (i.e., leaking or broken
water or sanitary sewer line, failure in stone sewer, culvert failure, etc.) the Cite
will remove the damaged pavement, repair or replace the damaged infrastructure,
and replace the pavement up to the rights-of-way line at no cost to the propertN
owner.
B. If a failure occurs on an existing paved driveway located within the Cite rights-of-
way due to age, wear, or subsidence, and the public infrastructure is found to be in
good condition, the property owner shall be responsible for the removal and
replacement of the driveway, such replacement being accomplished according to
the Ordinances. Design Criteria, Standard Details, and Technical Specifications of
the Cite. hi addition, the property owner shall be responsible for any damages
that may occur to existing public infrastructure, including the culverts, during the
construction process. The property owner shall obtain a building pennit from the
Cite for the driveway replacement and shall call in for inspections as needed.
C. If the driveway to be replaced is on an open ditch street, the culverts may be
replaced with the same size as existing with no drainage calculations required,
unless:
i. They are smaller than the 18"minimum requirements, or
ii. The whole drainage ditch is being enclosed (see paragraph III).
D. When new culverts are installed and concrete paving is being replaced,
construction joints shall be installed as shown in Detail A.
IL PROPOSED DRIVEWAY CONSTRUCTION/CULVERT INSTALLATION
A. When a property owner chooses to make improvements to an existing driveway,
the property owner is responsible for removing and replacing the culverts as well
as the existing paving.
Revised: 07/01/2017 APPENDIX F Page 1 of 7
City of Friendswood Design Criteria Manual
Department of Public Works APPENDIN F
Engineering Division Culvert and Driveways
B. When a property owner chooses to construct a new driveway, the property owner
shall install the rp over drivewaN, culverts and new pavement.
C. All work shall be completed in accordance with the Cite of Friendswood
Technical Specifications and Standard Details, latest edition.
D. When new culverts are installed and concrete paving is being installed,
construction joints shall be installed as shown in Detail A.
III. PROPOSED CULVERT INSTALLATION FOR THE PURPOSE OF
ENCLOSING OPEN DITCHES FRONTING RESIDENTIAL PROPERTY.
A. Development Pennit:
i. An approved Cite of Friendswood Development Pennit shall be required
prior to installation of residential stone sewer (unless the stone sewer is
being installed as part of a new residential building, in which case it shall
fall underneath the building pennit). Development pennits shall only be
valid for 1 year.
ii. A plan drawing shall be submitted with the Development Pennit
Application. The plan shall be drawn to a 1" = 20' scale.
iii. Pipe diameters, pipe flow lines, inlet flow lines, and inlet rim elevations
shall be shown on the drawings.
iv. All residential stoma sewer projects shall extend from property line to
property line.
v. A Traffic Control Plan shall be provided if any of the proposed work-
involves obstruction of traffic or lane closures of Citv streets.
vi. All residential stone sewers shall be made of Reinforced Concrete Pipe
(RCP) Class III, with a minimum 18" diameter, and shall be designed for
the purpose intended.
vii. Alternate sizes and steles may be used as long as they meter the same
square inch area of the required pipe size, and is approved by the Cite
Engineer.
B. Installation:
i. Stoma sewer inlets shall be located no farther than 15 feet from the
property line.
ii. Stoma sewer inlets shall be no farther than 30 feet from center to center.
Revised: 07/01/2017 APPENDIX F Page 2 of 7
City of Friendswood Design Criteria Manual
Department of Public Works APPENDIN F
Engineering Division Culvert and Driveways
iii. Only Type "A" Inlet (Detail B) or Type "S" Inlet (Detail C) shall be used.
iv. Inlet and junction box size and design shall be approved by the Cite
Engineer.
v. High points shall be located halfway between inlets with mild swales (see
Detail D).
vi. Elevations on inlet rims shall be a minimum of 3 inches lower that the
surrounding high points (see Detail D).
vii. All storm sewer projects are subject to inspections by Cite of Friendswood
personnel before they are covered up. Such inspections may require
changes or corrections to all or part of the culvert installations during any
phase of the work. All inspections shall be called into the Building
Division at (281) 996-3201 a minimum of 24 hours prior to inspections.
viii. Contractor shall have a means to determine flows on site (i.e., laser level,
level, etc.).
ix. All storm sewers shall receive a final inspection and approval by Cite of
Friendswood personnel upon completion. Any deficiencies noted shall be
completed within 30 days of such notice.
x. The Cite of Friendswood reserves the right to adjust or remove all or part
of the store sewer at anv time for anv reason.
xi. All work shall be completed in accordance with the latest revisions of this
Design Criteria Manual. Cite of Friendswood Technical Specifications.
and City of Friendswood Standard Detail: which can be found online at:
www.ci.friendswood.tx.us.com/ptiblications
IV. ACKNOWLEDGEMENT
By signing the pennit application, the applicant acknowledges they have received and
fully understand the requirements pertaining to the installation of residential storm
sewers.
Revised: 07/01/2017 APPENDIX F Page 3 of 7
City ofFrlendswood Design Criteria Manual
Department of Public Works APPENDIX F
Engineering Division Culvert and Driveways
V(THIN PRIVATE PROPERTY
Hl' MEN REFEB
PROPERTY LINE AT PROPERTY LINE
III REBAR P 16' O.0 EV. 1' EXPANSION JOINT ON
SEgLE➢ EXPANSION WITHIN CITY DOW CONCRETE STREETS SHALL
JOINT WEOOIREID BE NOMINAL REDWOOD OR
ASPHALTIC EXPANSION
2 MIN. te' 9 RLP 2' JOINT MATERIAL WITH 1'
MIN MIN PULL-OF STRIP TO BE
FILLED WITH APPROVED
MINIMUM 5' (TYP) MINIMUM 5' (TYPJ JOINT SEALANT.
2, 1a' LIP (CONCRETE
STREETS ONLY) SHALL NOT
BE REOUIR E ON STREETS
12' MIN, 12' MIN WITH 4' % 1 12' MOUNTABLE
CURB.
3 CONCRETE PAVEMENT
SEALED EXPANSINN EXTEND EXISTING E%PAN SIGN JOINTS HEADERS SHALL BE BUILT
JOINT (RE(NRED) INTO PROPOSED DRIVEWAY IN ACCORDANCE WITH CITY
OF FRIEN➢SVOOD PAVING
PLAN — ALL STREETS DETAILS_
a. CONNECTION TO EXISTING
ASPHALT STREETS SHALL
BE MADE BY BLOCKING NEW
l LIP N4 RE BAR. I6' O,L EV, CONCRETE WITH EDGE OF
PAVEMENT. A B' DEEP BY
SEALED EXPANSION JOINT WITX IS' LAPS QYPJ 12' VIDE BEAM SHALL BE
24' X $' DOWEL PROPOSE➢ DRIVEWAY PLACED AEONG THE EDGE
OF THE ASPHALT
_ PAVEMENT, NO EXPANSION
JOINT MATERIAL REQUIRED
PIPE 8' MIN BETWEEN EXISTING
ASPHALT STREET AND NEW
EXISTING CONCRETE DRIVEWAY.
CONCRETE SEE NOTE 3 5. DAMAGE TO EXISTING
PAVEMENT TRENCH* STREETS, WHETHER
SEE NOTE J LIMITS ASPHALT OR CONCRETE,
C C SHALL BE REPAIRED AT
PR FILE — CONCRETE JTREETJ 6. ALLCONCRETEE SHALL BE
CLASS 'A', 3,000 PSI AT
TWENTY-EIGHT DAYS,
], USE MATERIAL AND
EXISTING DIMENSION AS SPECIFIED
ASPHALT IN STORM SEWER DETAILS
STREET PROPOSED DRIVEWAY FOR TRENCH WIDTHS AND
BACNFILL.
2 EACH Be IT RECAR WITH RE BAR, 16' OC. E.V. D. NO MORE THAN ONE a)
T 6 BOTTOM WITH l5' LAPS (TYR> DRIVEWAY ON LOTS WITH
LESS THAN 120' OF
FRONTAGE.
9, 24' % %' DOWELS SHALL
HE EMBEDDED q MINIMUM
'A PIPE B' MM, OE 12' INTO E%I STING
DIA. CONCRETE ROADWAY.
12•• -ey. .,' ➢O WELS i0 BE INSTALLED
.'TRENCH AT 12' O.C.
SEE NOTE ➢ LIMITS
p3 STIRUPS
F 24' OL.
PROFILE — ASPHALT STREETS
RESIDENTIAL CONCRETE DRIVEWAY
(OPEN DITCH STREETS)
L* DEPARTMENT OF PUBLIC WORKS
DRAWN: 12/09 SCALE: N.T.S. T DRAWING: B.S. #11
Rmsed 07/01/2017 APPENDIX F Page 4 of
City ofFnendswood Design Criteria Manual
Department of Public Works APPENDIX F
Engineering Division Culvert and Driveways
000000 ,�T
000000 .1
PLAN
OAST WON SPATE
b
I d
y WffiNOOi4
AS R OARED
__.R
7— L
SECTION A
TYPE "A" INLET
NOI.
N1 REMPR IN
2. CONCATTE SHALL BE LASS 'A' WITH
PRESSN£
STRERFTH OF OAOOAPS
3. GRATES SHALL RE �IT MON
TYPE "A" INLET
L* DEPARTMENT OF PUBLIC WORKS
DRAWN: 0810 1 SCALE: N.T.S. DRAWING: B.S. #14
Revised 07/01/2017 APPENDIX F Page 5 of
City ofFrlendswood Design Criteria Manual
Department of Public Works APPENDIX F
Engineering Division Culvert and Driveways
X00000
6' OR 12' RISERS
PLAN
WITH
OF P SIZE
ZE
DE PIPE
PROFILE ISOMETRIC
1. USE GRADE 60 REINFORCEMENT,
2. USE 4,500 PSI CONCRETE.
3. RADIUS OF PIPE VARIES.
TYPE "S" INLET
DEPARTMENT OF PUBLIC WORKS
DRAWN: 10/14 SCALE: N.T.S. I DRAWING: ENO $19
Revised 07/01/2017 APPENDIX F Page 6 of
City ofFrlendswood Design Criteria Manual
Department of Public Works APPENDIX F
Engineering Division Culvert and Driveways
11G1ER11 LINE PROPERTY LINE
I I
]5 MIN 30' NA%. PROPOSED GRADE BREAK ITYPJ 15 MIN.
SEE SECTION BELOW
DIRECTim OF FLOW PROPOSED CULVERT
MATCH
EXISTING EXISTING CULVERT EXISTING ROAD PAVEMENT
CULVERT
PLAN VIEW FOR SINGLE DRIVEWAY
PROPERTY LINE PROPERTY LINE -,
L J
- PROPOSED GRADE 9REA fiYPJ
]5 MIN. 30' NA%. If SEE SECTIDN BELOW 15 MIN
DIRECTION OF FLOW PRO OSED LULV T
MATCH
EXISTING EXISTING CULVERT E%ISTMG ftOAO PAVEMENT
CULVERT
PLAN VIEW FOR DOUBLE DRIVEWAY
INSTALL HIGH POINT (TYR)
� I
3' MIN
--- -----
I I I I
I
DIRECTION OF FLOW
PLAN PLAN
DRAINAGE GRADING
REQUIREMENTS FOR FILLING IN ROADSIDE
DITCHES IN RESIDENTIAL AREAS
DEPARTMENT OF PUBLIC WORKS
DRAWN: 10/16 1 SCALE: 11.S DRAWING: ENG #21
Revised 07/01/2017 APPENDIX F Page 7 of
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
APPENDIX G
Traffic Control Sign Policy
TABLE OF CONTENTS
_attachments List..............................................................................................................................2
Purpose ............................................................................................................................ 3
Scope................................................................................................................................................3
Terms ...............................................................................................................................................4
Procedures........................................................................................................................................5
Traffic Concern Request Flow Chart...............................................................................................6
Specific Neighborhood Traffic Issues .............................................................................................7
No Parking/Parking Zone Implementation Requests.......................................................................7
No Parking/Parking Zone Removal Requests..................................................................................8
Commercial Truck Cut Through Traffic Mitigation Requests................................................................9
Pedestrian Facility Requests..........................................................................................................10
School Zone Safety Requests.........................................................................................................11
SpeedControl Requests.................................................................................................................12
Intersection Control Requests (Multi-Way Stops. Traffic Signals, and Roundabouts)................ 13
"Children at Play" and "Deaf Child Area- Sign Requests ...........................................................14
Other_advisory or_advanced Wanting Sign Requests ..................................................................14
Other Public Safety and Traffic Issue Requests ............................................................................14
Revised U7/U1/2O17 Appendix Page 1of38
City of Fnendswood Design Criteria Nlanual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
ATTACHMENTS:
A. No Parking and Parking Zones...............................................................................................15
B. Commercial Truck Cut-Through............................................................................................18
C. Pedestrian Facilities................................................................................................................20
LPedestrian Safety...........................................................................................................20
IL Pedestrian Crosswalks...................................................................................................21
III. Pedestrian Signals..........................................................................................................23
D. School Traffic Safety..............................................................................................................25
I. _Mound Schools.............................................................................................................25
ILAround School Buses....................................................................................................26
E. Speed Limits ...........................................................................................................................30
F. Intersection Controls...............................................................................................................32
I. STOP signs....................................................................................................................33
II. YIELD signs..................................................................................................................34
III. Traffic Signal Installation..............................................................................................34
G. Children at Play Signs ............................................................................................................36
H. Speed Humps. Bumps. and Lumps.........................................................................................37
Revised U7/U1/2O17 Appendix G Page 2 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
PURPOSE
This police establishes consistent procedures for addressing traffic-related concerns that may
occasionally arise along roadways within or nearby residential areas in the cite. Traffic
concerns specifically addressed in this police include the following:
• No Parking/Parking Zone Requests
• Cut Through Traffic Mitigation Requests
• Pedestrian Treatment Requests
• School Zone Safety Requests
• Speed Control Requests
• Intersection Control Requests (Multi-way Stops. Traffic Signals, and Roundabouts)
• "Children at Play' Sign Requests
• Other_advisory or_advanced Warning Sign Requests
• Other Public Safety and Traffic Issue Requests
Other traffic concerns not specifically addressed in this police may be presented to staff for
review by any citizen. Homeowners _Association (HOA) business, or group. The Engineering
staff will work with those parties to review their situation and formulate an appropriate
response as necessary.
In accordance with the Cite of Friendswood Code of Ordinances Chapter 82 — Traffic and
Vehicles and further stated in Ordinance 300, the Traffic Engineer or their designee, will be
responsible for all traffic investigations in the Cite of Friendswood.
SCOPE
The Cite of Friendswood is committed to improving the quality of life within its Cite. When
a request is made to review a traffic concern, the City's direct efforts are to work and
coordinate with the requesting party in understanding and addressing concerns in a defined
area. The Engineering Division of the Department of Public Works (hereafter called
"Engineering") will inforn the affected residents of any significant changes. This police is
applicable only to non-state routes.
The adoption of this police is not intended and should not be construed to affect or waive the
City's immunity from damages under the Texas Tort Claims .-Act (CPRC Chapter 101) or any
other law or ordinance. This police does not require the Cite to install, remove, or modify any
traffic control device, sign, signal, or warning device if the Cite has, in the absence of this
police, the discretion under State law to install, remove, or modify the traffic control device,
sign, signal, or warning device. All investigations for traffic concerns and signage shall be
investigated and warranted in compliance as outlined in the Texas Manual on Uniform Traffic
Control Devices (TMUTCD), latest edition.
Revised U7/U1/2217 Appendix G Page 3 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
TERINIS
Citv Traffic Director— The Duties of the Cite Traffic Director will be encompassed by the Cite
Engineer. The Cite Manager will retain the final approval/disapproval authority over all
decisions of the Citv Traffic Director.
Engineering Judgment — The evaluation of available pertinent information, and application of
appropriate principles, provisions, and practices as contained in the TMUTCD (see below) and
other sources, for the purpose of deciding upon the applicability, design, operation, or
installation of a traffic control device. Engineering judgement shall be exercised by an engineer,
licensed to practice engineering in the State of Texas, or by an individual working under the
supervision of an engineer, through the application of procedures and criteria established by the
engineer. Documentation of engineering judgement is not required.
HOA—Homeowners _association approved, recognized, and incorporated by law.
Ordinance 300 — The Cite of Friendswood Ordinance 300 grants the power to the Cite Traffic
Director the authority to determine installation and proper timing and maintenance of traffic
control devices, to conduct engineering analyses of traffic accidents to devise remedial
measures, to conduct engineering investigations of traffic conditions, to plan the operation of
traffic on the streets and highways of the Cite of Friendswood, and to cooperate with other
officials in the development of ways and means to improve traffic conditions, and to carry out
the additional powers and duties imposed by the ordinances of this Cite.
ROW—Riglnt(s)-of-waN, the area between property lines given the legal right by usage or grant,
for traffic or pedestrian travel.
TMUTCD — Texas Manual on Unifonm Traffic Control Devices. The TMUTCD is the
authoritative manual on installation, implementation, and maintenance of all types of traffic
control devices, both permanent and temporary, for the State of Texas.
Traffic Committee — The Traffic Committee is composed of employees of the Cite of
Friendswood representing the Police Department, the Fire Marshal's Office. Department of
Public Works _-administration, and Public Works Engineering Division.
Traffic Study — A traffic study is the procedures and other investigations as described in the
TMUTCD to determine if a warrant is necessary for a traffic concern.
Warrant — a warrant describes the threshold condition based upon average or normal conditions
that, if found to be satisfied as part of an engineering study, shall result in analysis of other
traffic conditions or factors to determine whether a traffic control device or improvement is
justified. Warrants are not a substitute for engineering judgement. The fact that a warrant for a
particular traffic control devices is met is not conclusive justification for the installation of the
device.
Revised U7/U1/2217 Appendix G Page 4 of 38
City of Fnendswood Design Criteria Nlanual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
PROCEDURES
1. Residents, homeowners associations, or similar type groups may make a written
request to Engineering requesting that a traffic concern be addressed. Traffic
Concern request forms may be obtained from the Cite of Friendswood
Engineering or downloaded at www.friendswood.com/publications.
2. The requesting party's issue will be entered in the Public Works Traffic
database to search for similar requests in the subject area.
3. Staff will communicate with the requesting party to fitlly understand their
request and thoroughly define the area of concern.
4. Engineering will identify the area of concern and define the area affected.
5. Engineering staff will evaluate the request, collect data if necessary to confine
the magnitude of the problem, and determine if further study is necessary.
6. If the Engineering staff determines that further study is necessary, procedures
to address the specific traffic issue will be implemented. These procedures
are detailed in the following portion of this policy. "Specific Traffic
Concerns."
7. Should changes be warranted. Engineering will share the proposed changes
with the impacted residents before any improvements are implemented.
_y flow chart that graphically illustrates the above listed procedures is illustrated on the
following page.
Revised U7/U1/2217 Appendix G Page 5 of 38
City ofFriendswood Design Criteria Manual
Department of Public Works APPENDIX G
Engineering Division Traffic Control Sign Policy
Traffic Concern Request Flow Chart
Is Traffic
Receive haffc Concem Concern Request No Fill Out Tra fic Concem
Requert Form Filled Request Farm
Out
Yes
Define end Evaluate Communicate W iN Acap Traffic Concem
Area of Concem Request Refamce
Numbs
Ie a
Conduct Sne Vwt Contec[Effected HOA'a Traffic Yes
of Area oEConc Businesses,said Residents Study
Aequve '
No
Shine s "'a w�&r Initiate the Proper
Effmted HOA's Review and Comment by procedures for The
Businesses,and Residents Traffic Committee Type of Concem
Prepare Oedvanee 300 ICAY
Approv7city
ace DisapprovDisapprI as Ar
Revised 07/01/2017 Appendix Page 6of38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
SPECIFIC TRAFFIC CONCERNS
Specific types of traffic requests in the Cite of Friendswood are addressed in this section of the
police.
No Parking/Parking Zone Implementation Reauests
As with all requests to review traffic concerns in the Cite of Friendswood, requests for "No
Parking"/'Parking" zone implementation will be addressed with the same measures outlined in
the Procedures section of this police.
• Engineering and the originator of the request will define a study area for property
owners that may be impacted by a proposed "No Parking"/'Parking"zone.
• An engineering study will determine if a "No Parking"/'Parking" zone is
appropriate for the requested area for twenty-four (24) hours per day or for specific
days and/or time periods.
• In order to implement a "No Parking"/'Parking" zone, 10000 of the property owners
that are projected to be affected adjacent to their property must agree in writing to the
"No Parking"/'Parking" zone implementation. The requestor will be required to
obtain signatures from the owners.
• If deemed appropriate by an engineering study and agreed to by the property owners
that will be affected adjacent to their property. "No Parking"/'Parking" signs will be
posted by the entire street, block, or logical termination point as determined by
Engineering. Other advisory or advanced warning signs will be placed as dictated by
sound common engineering practices or the Texas Manual on Unifonm Traffic Control
devices, latest edition.
• All "No-Parking"/'Parking" zone applications shall be thoroughly reviewed by
Engineering after a period of two (2) full years from the date of implementation.
The "No-Parking"/'Parking" zone shall remain in effect unless a compelling safety
reason is discovered.
As with all requests to review traffic concerns in the City of Friendswood, should the
implementation of a "No Parking"/'Parking" zone in the study area be warranted. Traffic
Engineering and Operations will share the proposed changes with the impacted residents
before any modifications or improvements are implemented.
Additional information concerning no parking/parking zones is included in the Attachment A
under the title No Parking and Parking Zones.
Revised U7/()1/2217 Appendix G Page 7 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
No Parking/"Parking" Zone Removal Reauests
As with all requests to review traffic concerns in the Cite of Friendswood, requests for "No
Parking"/"Parking" zone removal will be addressed with the same measures outlined in the
Procedures section of this police.
•
An engineering study will determine if the removal of a "No Parking-
/-Parking-zone is appropriate for the requested area. If appropriate. "No Parking-
/-Parking-signs will be removed by the entire street, block, or logical termination point as
determined by Engineering and the requesting party. Other advisory or advanced
warning signs will be placed, or removed, as dictated by sound common engineering
practice or the Texas Manual on Uniform Traffic Control devices, latest edition.
As with all requests to review traffic concerns in the Cite of Friendswood, should the
removal of a "No Parking"/"Parking" zone in the study area be warranted. Engineering will
share the proposed changes with the impacted residents before any modifications or
improvements are implemented.
_additional information concerning no parking/parking zones is included in the Attachment
A under the title No Parking and Parking Zones.
Revised U7/U1/2217 Appendix G Page 8 of 38
City of Friendswood Design Criteria Nlanual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
Commercial Truck Cut-Through Traffic Mitigation Reauests:
As with all requests to review traffic concerns in the Cite of Friendswood, requests for
commercial truck cut-through traffic mitigation control will be addressed with the sauce
measures outlined in the Procedures section of this police.
• An engineering study will detennine the measures that are appropriate to address the
specific commercial truck cut-through traffic mitigation concerns that may exist for
the given the study area. In order to be considered a candidate for measures to reduce
commercial truck cut-through traffic, a roadway must be a local roadway or a minor
collector roadway with residential characteristics with a peak hour volume of over 375
vehicles in one direction with over 400 o cut-through vehicles.
• To implement a plan which limits commercial truck cut-through traffic. 1000 o of the
affected property owners must sign a petition as implemented through these police
guidelines.
As with all requests to review traffic concerns in the Cite of Friendswood, should changes
to the study area to control commercial truck cut-through traffic in the study area be
warranted. Engineering will share the proposed changes with the impacted residents before
any modifications or improvements are implemented.
_additional infonnnation concerning commercial truck cut-through traffic is included in the
Attachment B under the title Commercial Truck Cut-Through Traffic Hitigation.
Revised U7/U1/2217 Appendix G Page 9 of 38
City of Friendswood Design Criteria Nlanual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
Pedestrian Facility Reauests:
As with all other requests to review traffic issues in the Cite of Friendswood, requests for
pedestrian improvements will be addressed with the sauce measures outlined in the
Procedures section of this police.
• Engineering will study the requested location and perform a crosswalk analysis which
includes volume of pedestrian traffic, proximity of the subject location to schools,
parks, swimming pools, retail centers, hike and bike facilities, vehicular traffic
volume. etc.
• The placement of a crosswalk at an uncontrolled intersection or in the middle of a block
shall be considered only in rare cases. In general, the placement of a crosswalk at an
uncontrolled intersection may create a false sense of security for pedestrians that could
increase the likelihood of a vehicle-pedestrian incident.
As with all other requests to review traffic issues in the Cite of Friendswood, should
pedestrian improvements be warranted. Engineering will share the proposed changes with the
impacted residents before any modifications or improvements are implemented.
_additional information concerning pedestrian facilities is included in the Attachment C
under the titles Pedestrian Safeo% Pedestrian Signals, and Installation of Alarked
Crosswalks.
Revised U7/U1/2217 Appendix G Page W of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
School Zone Safety Reauests.
As with all other requests to review traffic issues in the Cite of Friendswood, requests for
school zone safety will be addressed with the same measures outlined in the Procedures
section of this police. School zone safety requests encompass a broad range of requests in
the vicinity of a school. Common requests in the Cite of Friendswood are addressed
specifically below. Other requests will be addressed on a case per case basis.
• The traffic police is not intended to replace or alter the existing provisions and
ordinances established by the City of Friendswood.
• Reduced speed school zones are areas in which the speed limit is reduced for certain
periods of the day that may be requested by individual citizens, communities, or
schools. A traffic engineering study will determine if a reduced speed school zone is
warranted based on the proximity of the roadway to the school, the type of school
(elementary, junior high, senior high, etc.), vehicular volumes, pedestrian volumes,
vehicular speeds, availability of sidewalks, alternative routes between the school
residential areas served by the school, and other factors.
• Requests for a crosswalk in the vicinity of a school will be treated with the same
procedures as outlined in the "Pedestrian Facility Requests" section of this police.
Proximity to schools and type of vehicular control are major factors in the
consideration of crosswalks.
• Parking restrictions in the vicinity of a school will be treated with the same
procedures as outlined in the "No Parking Zone Implementation" section of this
police. Proximity of schools is a major factor in the consideration of parking
restrictions.
• No right-turn on red at signalized intersections in a school zone is a means to reduce
the likelihood of conflicts between right-turn vehicles and school aged children in
crosswalks. If appropriate, a traffic engineering study will determine the need for no
right-turn on red restrictions based on vehicular volumes, pedestrian volumes, traffic
signal timing, and other factors.
• The Texas Manual of Uniform Traffic Control Devices (latest edition) does not
require the installation of flashing beacons to alert motorists to school zones. The
Cite of Friendswood will consider the installation of school flashing beacons on
arterial and collector roadways, but not on local streets.
As with all other requests to review traffic issues in the Cite of Friendswood, should
changes to the conditions within a school zone be warranted. Traffic Engineering and
Operations will share the proposed changes with the impacted residents before any
modifications or improvements are implemented.
_additional information concerning school zone safety is included in the Attachment D under
the titles School Zones and School Traffic Safety•
Revised U7/U1/2O17 Appendix Page 11 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
Sneed Control Reauests.
As with all other requests to review traffic issues in the Cite of Friendswood, requests for
speed control will be addressed with the same measures outlined in the Procedures section
of this police.
• Engineering will maintain a database of locations at which excessive vehicular
speeds have been reported that will be shared with the Police Department for
enforcement purposes.
• The Texas Manual of Uniform Traffic Control Devices (latest edition) states that a
speed limit should be posted within 5 mph of the 85th percentile speed of the free-
flowing traffic. Engineering Judgement is the overriding determination for all speed
limit postings.
• The following alternatives are available to address speed control requests.
The Neighborhood Speed Watch Program is a public awareness program
through which concerned citizens can take an active role in making
neighborhood streets safer by observing and recording traffic speeds in their
neighborhood. _additional information and application forms to participate in
the Neighborhood Speed Watch Program may be obtained from Traffic
Engineering and Operations, the _appendix of this policy, or downloaded at
www.friendswood.com.
A speed feedback sign may be installed to alert motorists to their actual speed
and the posted speed limit on a roadway. _additional information concerning the
speed feedback sign is included in the _appendix of this police.
A speed study may be conducted at the site. The speed study will determine the
85th percentile speed and consider other issues in the site vicinity including
pedestrian traffic volunne, roadway curvature, the frequency of traffic accidents,
sight distance restrictions, and other issues specific to the study site. The speed
study may determine that the posted speed limit at the study site is too low/hig]n
and may recommend that the posted speed be adjusted to within 5 mph of the 0h
percentile speed.
As with all other requests to review traffic issues in the Cite of Friendswood, should
changes to the speed control in the study area be warranted. Traffic Engineering and
Operations will share the proposed changes with the impacted residents before any
modifications or improvements are implemented.
_additional information concerning speed control is included in the Attachment E under the
title Speed Limits.
Revised U7/()1/2217 Appendix G Page 12 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
Intersection Control Reauests (Multi-way Stops. Traffic Signals, and Roundabouts):
As with all other requests to review traffic issues in the Cite of Friendswood, requests for
intersection control will be addressed with the same measures outlined in the Procedures
section of this police.
• Multi-way stop signs or traffic signals shall not be installed within the corporate Cite
limits of the Cite of Friendswood unless approved by an authorized warrant analysis
and by the Cite Traffic Engineer.
• Multi-way stops and traffic signals are warranted based on vehicular traffic volumes,
pedestrian traffic volumes, vehicular speeds, traffic accident data, and other traffic data
in accordance with guidelines defined in the Texas Manual of Uniform Traffic Control
Devices (TMUTCD).
• _according to the TMUTCD. "regulatory and warning signs should be used
conservatively because these signs, if used to excess, tend to lose their effectiveness." If
confinned by a traffic engineering study, existing nmlti-way stop locations that are not
warranted will be removed by the City of Friendswood.
• _according to the TMUTCD, stop signs or traffic signals shall not be installed for the
purpose of controlling the speed of a roadway as they have been shown to become a
hazard at times when installed without warrant.
• Implementation of multi-way stop signs, traffic signal, and roundabouts will be in
accordance with necessary budget considerations.
As with all other requests to review traffic issues in the Cite of Friendswood, should
changes to the intersection control in the study area be warranted. Traffic Engineering and
Operations will share the proposed changes with the impacted residents before any
modifications or improvements are implemented.
_additional information concerning intersection control is included in the Attachment F under
the titles Stop Signs, Signal Installation, and Roundabouts.
Revised U7/U1/2O17 Appendix G Page 13 of 38
City of Friendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
"Children at Play" and "Deaf Child Area" Sign Reauests:
"Children at Play' and "Deaf Child Area" signs are not recognized by the State of Texas or by
the Federal Highway Administration as official traffic control devices. These signs may
create a false sense of security for parents of children and typically do not achieve the desired
safety benefits.
The cite does not recommend installing "Children at Play' signs within its boundaries.
Existing "Children at Play' signs will be removed by the cite that have previously been placed
without proper authorization and are not in compliance with this sign police.
"Deaf Child Area" signs may only be installed in school zones if deaf children attend the
school. If installed, these signs will be removed when the deaf child no longer attends the
school.
Additional information concerning children at play signs and deaf child area signs is
included in the Attachment G under the title Children at Play Signs.
Other Advisory or Advanced Warning Sign Reauests:
As with all other requests to review traffic issues in the Cite of Friendswood, requests for
advisory or advanced warning signs will be addressed with the same measures outlined in the
Procedures section of this police.
• Traffic Engineering and Operations will study the requested location and perforn an
advisory/advanced warning sign analysis which includes volunne of pedestrian traffic,
proximity of the subject location to schools, parks, swimming pools, retail centers, bike
and bike facilities, vehicular traffic volume, etc.
• The requesting party will be informed that it is City policy to only install advisory or
advanced warning signs that are in accordance with the Texas Manual on Uniform
Traffic Control devices, latest edition.
Other Public Safety and Traffic Issue Reauests:
Other requests to review traffic issues in the City of Friendswood will be addressed with the
same measures outlined in the Procedures section of this policy.
Traffic Engineering and Operations will share the proposed changes with the impacted
residents before any modifications or improvements are implemented.
Revised U7/U1/2217 Appendix G Page 14 of 38
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ATTACHMENT A
No Parking and Parking Zones
Parking Zones:
Commercial Zones are designated for commercial vehicles to load and unload merchandise for
up to 20 minutes. Yellow zones are usually found in commercial areas for the use of adjacent
commercial areas.
NO LOADING
AND
PARKING LOADING a UNLOADING
LOADING UNLOADING ONLY
ZONE ONLY lU MINUTE LIMIT
Green Zones are used for limited term parking, usually 20 minutes as indicated on a sign. In
any limited parking you can receive a citation if you exceed the maximum limit by 1 minute or
more. To avoid a citation, you must vacate the parking space within the time limit specified
and let other members of the public use these high demand spaces.
HOUR COMPACT
Two PARKING CAR
HOUR 8"`6PM PARKING RESERVED FOR
PARKING)
ONLY MOTHE EXPECTING
MOTHERS
Red Zones indicate no parking at any time and are reserved for fire and emergency vehicles.
Any other vehicle parked or encroaching on or in the red zone is considered a violation of the
parking restriction and may receive a ticket and/or be towed.
NO NO ® LANE it
PARKING PARKING FIRE LANE NO
ANY ?o✓� PARKING
TIME TOWAWAY NO K""
�► ZONE PARKING ptlMISOP
Blue Zones are reserved parking spaces for vehicles used by disabled persons and displaying
the appropriate disabled parking placard or license plate.
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RESERVED
PARKING
® PARKING
ONLY
RESERVED
PARKING
VAN
ACCESSIBLE
Where is it illegal to park?
• No Parking Zones marked by No Parking,No Stopping, or No Standing signs.
• In front of a private or public driveway.
• In front of or within 15 feet of a Fire Hydrant.
• Within marked or unmarked crosswalks. An unmarked crosswalk is considered to be an
extension of sidewalk boundary lines across a street or driveway.
• On sidewalks.
• In public rights-of-way for the purpose of advertising or selling without proper
authorization.
• In handicapped parking spaces without a legally obtained handicap placard or license
plate.
• Where a vehicle will obstruct or block a handicapped parking space.
• Within 30' on the approach to a flashing signal, stop sign, yield sign, or traffic control
signal located at the side of the roadway.
• Within 3' of a handicap access ramp.
• In stripped loading zones next to handicapped parking spaces.
• Straddling the markings or lines designating a parking stall.
• Along the curb return within 10' of an intersection.
• Within marked hatched no parking areas.
• Within 15' of the entrance to a fire or ambulance station.
• Within 500' of fire trucks or emergency equipment when these are stopped answering a
fire alarm or emergency call.
• Other areas as designated in the Texas State Transportation Code section 545.302 which
restricts parking even if no signs are posted.
Parking areas for persons with disabilities
Parking areas for persons with disabilities, also known as handicapped parking spaces are
established for the exclusive use of vehicles transporting persons with disabilities. Any vehicle
parked in a marked handicapped space or tow away zone parking space that does not display a
placard or license plate with the international symbol of access can be given a ticket, towed, and
impounded. Handicap spaces can be established on public or private property if the property
owner and the City Engineer determine the need for such space/spaces.
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— ra
l- oisne34VC & KH OVi433
1ED VET _
A citizen with a valid handicap placard or license plate is allowed to park in a regular metered
space without paying provided there are no other restrictions by signage. For example: No
Parking 7 — 9 AM or 4 — 6 PM. However no one can park at meters in commercial
loading/unloading zones unless they possess and have visibly displayed in the vehicle a
commercial loading/unloading parking permit.
How close to the curb must I park?
All vehicles parking parallel to the curb must park within 18 inches. All vehicles parking at an
angle must have 1 front tire within 6 inches of the curb. All parallel parking must have
passenger side to curb, unless parked on a one-way street.
What is the maximum length of time I can park my vehicle on the street without moving it?
• Passenger vehicles cannot be parked on public streets for more than 48 hours.
• Trailer/Semi-Trailer cannot be parked on a public street for more than 2 hours.
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ATTACHMENT B
Commercial Truck Cut-Through
Truck cut-through traffic trying to avoid congestion on major streets is a growing concern to
cite residents. Local and residential streets were not typically designed to carry high volume or
heave loaded through traffic. This unnecessary through traffic generates noise, air pollution,
and creates other issues, including safety, for residents. Some trucks also try to park on narrow
residential streets, which also causes concerns for the residents and emergence vehicles.
Residents concerned with high volumes of truck traffic traveling through, or parking in, their
neighborhood have several remedies available. The Cite will evaluate the specific problems of
your street and implement the most effective solution if the conditions warrant action.
Definitions of"Commercial Vehicle" and "Commercial Truck"
A commercial vehicle can be defined as any vehicle that is used and maintained for commercial
purposes. A commercial trek is a commercial vehicle with more than 2 axles.
Cut-Through Traffic
Cut-through traffic can be defined as commercial vehicles passing through a neighborhood
without at least 1 trip end (origin or destination) in that neighborhood. Cut-through traffic
causes unwanted noise, dust, pollution, and safety issues for residents. Cut-traffic can be
passenger vehicles, commercial vehicles, and/or commercial trucks. A cut-through commercial
vehicle or truck is one that passes through a street/neighborhood without a scheduled stop in
that neighborhood.
In additions to pollution and safety issues, cut-through commercial traffic cause pavement
deterioration of the neighborhood roads since most neighborhood roads are not designed for
heavy commercial traffic.
Cut-through traffic is also defined as motorized vehicles cutting through a parking lot and/or
business to avoid heave traffic or traffic control devices such as Stop/Yield Signs or traffic
signals.
Possible Solutions
If your neighborhood has a high volunne of cut-through traffic, you can request a traffic study
by filling out the Traffic Concern fornn and sending it to the Engineering Division. Upon
receiving a completed request fornn, the Engineering Division will make an initial detennnination
of the need for a study as in outlined in the procedures of this police. Counteractive measures
such as signage and enforcement, or traffic calming measures may be instituted.
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Parking in Residential Neighborhoods
Residential neighborhoods, which are in close proximity to busy commercial areas with limited
parking facilities or near a truck parking facility/compound, may find unwanted vehicles parked
in the neighborhood. Commercial Vehicles cannot be parked on a public street overnight and
trailer/semi-trailer cannot be parked on a public street for more than 2 hours.
COMMERCIAL NO
VEHICLES COMMERCIAL COMMERCIAL
EXCLUDED VEHICLES VEHICLES
PROHIBITED
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ATTACHMENT C
Pedestrian Facilities
L PEDESTRIAN SAFETY
The need for Pedestrian Safety:
Whether for school, work, or recreation, most of us walk every day. However, some people have
to walk as their primary means of transportation or choose to walk to improve their health.
Whatever our reasons may be for walking, pedestrians have a legitimate right to walk without
feeling unsafe or uncomfortable. Since most of our roads were designed for vehicular traffic, we
need to improve walkability in our communities and make them safer for walking.
Typical Issues with Pedestrian Safety
The first step in improving pedestrian safety involves identifying the problem. Residents can
help identify the pedestrian safety concerns in their neighborhoods. The following lists some of
the typical problems associated with pedestrian safety and can be used as a guide in identifying
problems in a neighborhood.
Poor or Inadequate ii"a1kz173z Facilities
• Existing sidewalks and trails are insufficient and do not connect to schools, parks,
churches, etc. Dirt paths or desire lines show that more sidewalks or paths are needed.
• Existing sidewalks are not wide enough for people to walk comfortably or pass each
other.
• Sidewalk surfaces are uneven, broken, or covered with debris.
• Sidewalks and paths are blocked by barriers such as vehicles, trash cans, vegetation,
utility poles, mail boxes, benches, or other obstructions.
• There is not enough space between the sidewalk and the roadway to make pedestrians
feel comfortable.
• The intersections are wide and crossing distances are long. Turning radii at the
intersections allow cars to turn at higher speeds.
• Bicyclists riding on the sidewalk (possibly because they do not feel safe in the street)
cause conflicts with people walking.
Unsafe Driver Behaviors or Traffic Characteristics
• Drivers do not stop or yield to pedestrians crossing the roadway.
• Drivers drive too fast through neighborhoods, around schools, or near other places where
people are walking.
• Drivers take short cuts through neighborhoods to avoid traffic on major roads.
• Red light or stop sign runners endanger pedestrians and bicyclists.
• Drivers pass other vehicles stopped at crosswalks for pedestrians or pass stopped school
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buses.
• Drivers are more distracted than ever by cell phones, electronic media, passengers, and
other activities.
Unsafe Pedestrian Behaviors
• Pedestrians do not look both ways before crossing the street.
• Pedestrians attempt to cross the street when traffic is approaching.
• Pedestrians cross against pedestrian signals.
• Pedestrians crossing midblock where there are no crosswalks.
• Pedestrians, like drivers, can be distracted by cell phones and other electronic devices.
Typical Solutions
Once the problem or problems have been identified, the nest step is developing an appropriate
solution. Pedestrian transportation improvements or potential solutions for pedestrian safety are
described in terms of the "Four E's":
1. Engineering — Physical changes to infrastructure (i.e., sidewalks, traffic signals,
signs, etc.)that affect the operation and movement of traffic and pedestrians.
2. Education — Includes strategies that aim to educate pedestrians, drivers, or other
groups in order to motivate a change in behavior.
3. Enforcement — Community-based or law-agency-based measures to enforce laws
and regulations related to pedestrians.
4. Encouragement — Efforts to promote walking and increase the level of walking
in a community.
II. Pedestrian Crosswalks
Crosswalks
A crosswalk is typically defined as a designated portion of the roadway that pedestrians use to
cross the street. A crosswalk may be marked or unmarked. There is no legal difference between
marked and unmarked crosswalks at controlled intersections (those with stop signs or traffic
signals). However, marked crosswalks at mid-block locations provide a designated and legal
crossing zone for pedestrians.
1. Unmarked Crosswalks — most every intersection is considered to represent a
crosswalk, even if it is not marked as such. An unmarked crosswalk is basically_
the extension of a sidewalk that extends across intersecting roads.
2. Harked Crosswalks — are those crosswalks marked with pavement markings.
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usually 12' wide white pavement markings on 6' centers, either plain,
perpendicular crosshatched, or 45 degree crosshatched
3 Enhancements — are traffic control devices or signals that enhance and aids the
safe movement of pedestrian traffic in the roadways
< > HERE • vRE �
' FaR� T-yr *to
Benefits of Marked Crosswalks
Marked crosswalks guide pedestrians to a proper crossing location and alert motorists of a
pedestrian crossing point However, at uncontrolled locations, marked crosswalks may create a
false sense of security for pedestrians resulting in a greater number of pedestrian crashes (if
additional safety treatments are not provided)
City Policy on Marked Crosswalks
The City's current policy is to install marked crosswalks at controlled intersections where there
is a demonstrated need Crosswalks are also marked at established school crossings At other
locations, an engineering study must be conducted to ensure that marked crosswalks are installed
only where there is significant pedestrian activity and/or based on engineering judgment The
need for, and potential use of, a proposed crossing varies with each location, each should be
considered individually, and with an effort to maintain consistency in the decision making
process Approval of marked intersection on state highways, or an intersection of a state
highway and city road, within the City Limits shall be coordinated with TxDOT
Categories of Marked Crosswalks
Marked crosswalk locations fit into 1 of 3 categories
1 Marked crosswalks are Standard on signalized approaches at intersections
2 Marked crosswalks alone (without other enhancements or treatments) are
Permitted on roadways with posted or 85th percentile speeds less than or equal to
35 mph, if recommended as part of an engineering study and approved by the City
Engineer
3 Marked crosswalks with enhancements or active devices are installed on
roadways with posted or 85" percentile speeds greater than 35 mph, if
recommended as part of an engineering study and approved by the City Engineer
Such enhancements might include traffic calming features (i e median refuge
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islands, curb extensions, narrowed travel lanes, traffic diverters, chicanes),
illumination, or etilianced devices (i.e. advance signage), or active devices (i.e.
pedestrian-activated signals).
III. Pedestrian Signals
Why do some traffic signals have push button and signal indications for pedestrians and
others do not?
Pedestrian signals are primarily installed for 2 reasons:
1. A high volume of pedestrian traffic present: or
2. The green time given for vehicles in a particular direction is not sufficient for
pedestrians to cross the roadway in that direction.
When signal indications for vehicles are ease to see and provide plenty of green time for
pedestrians to cross safely, push buttons and pedestrian signal indications are often not needed.
Push buttons are sometimes provided at intersections where the signal timing is typically
controlled by the volume of vehicular traffic. If traffic volumes are low at these intersections,
pedestrians will not have enough time to cross the street without push buttons. If pedestrian
crossing times were factored into every signal cycle, mane intersections would become
inefficient and delay vehicles more than necessary. The use of pedestrian push button allows
extra time to be provided only when a pedestrian is present.
What do pedestrian signals mean, and why isn't there enough time to cross the street
during the walk indication on a pedestrian signal?
The Cite has in use the pedestrian signals that indicate illuminated symbols of a walking person
and an upraised hand, along with a countdown timer of how mane seconds of time until the
pedestrian signal indicates "Do Not Cross". The signals are timed for an average walking
distance of 4 feet per second.
• The steadily illuminated upraised hand indication means that a person should not enter
the roadway in the direction of the signal.
• The walk symbol (the white colored walking person) means that a pedestrian may start
crossing the road toward the signal.
• The flashing orange upraised hand means you can continue to cross, but there is not
adequate time to begin crossing. The purpose of the flashing indication is to keep
pedestrians from entering and intersection too late and to let pedestrians already in an
intersection know that their time to finish crossing is becoming shorter, which is now
indicated by the countdown timer.
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Will pushing the pedestrian walk button several times make the signal change faster?
No, the walk button will send a message to the controller requesting a walk indication be granted
to the requested direction in the nest available signal cycle. Continuously pressing the
pedestrian button does not send additional messages to the controller since the controller has
already acknowledged the pressing of the walk button with the first push.
Why do vehicles keep turning even when the pedestrian signal indicates that pedestrians
have the right to cross?
Pedestrian signals assign the right-of-way for pedestrians to cross the street. However, since
right tunas on red are allowed, some drivers may make right tunas without yielding to pedestrians
or do not see the pedestrian signals. This is why it is important to always be cautious when
crossing busy intersections. The following suggestions are offered in the interest of safety:
• _always cross intersections defensively.
• When crossing the street, regardless of the availability of signals, cross as quickly as
possible. Minimize your time in the roadway.
• _always watch for turning vehicles. You have the legal right to be there, but that does not
protect you from the carelessness of some motorists.
• Whether marked or unmarked, or signalized _-1LTV-11S look both ways before crossing
the roadway.
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ATTACHMENT D
School Traffic Safety
School Traffic Safety Statistics
On average, each year 23 school-age children die in school related traffic accidents in the United
States. Out of these. 6 are occupants of school transportation and 17 are pedestrians. Based on
these statistics,the Cite would like to stress the importance of pedestrian safety around schools
and school buses. However, pedestrian safety is not solely dependent upon the pedestrians
themselves but is very much dependent upon the driving practices of motorists near and around
schools and school buses.
I. AROUND SCHOOLS
Pedestrian Safety Tips for Children
Most people, and especially young children, cannot judge the speed, distance, and size of
oncoming vehicles. Parents should walk the route to school (or other destinations) with children
and point out safe and unsafe practices. This includes locations where children may go to catch a
bus.
• At a traffic signal, the green light or walk signal (the white walking person) means that
children should stop at the curb or edge of the road, look both ways for oncoming traffic,
and then if it is safe, cross the street. Having the walk indication or green light does not
guarantee that cars will stop. Pedestrians must always look for oncoming and turning
traffic even when they have the right of way.
• Before crossing the street, children may want to wait for a "fresh green light." This
means that they wait for the nest new walk indication if the "don't walk" indication
(upright orange hand) is flashing and the countdown timer is nearing zero. Doing this
gives them the most time to cross.
• If children are in the middle of the street and the "don't walk" indication begins flashing,
they should not stop or return to the curb or edge, but continue on to walk at their
maximum comfortable pace until they reach the other side. They should not nun as they
might fall.
• And Remember:
Children crossing the street should be accompanied by an adult whenever
possible.
_avoid crossing streets at mid-block, especially when parked vehicles may
obstruct vision. Use stops signs, traffic signals, and crossing guards when
available.
Children should not follow others or nun to others when the call until a safe
crossing is available.
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Vehicle Safety ground Schools
Parents and other adults can do much to improve traffic safety around schools by driving
cautiously, teaching children safe practices, and limiting vehicle trips. Drivers should obey all
traffic laws and apple the following practices:
• Carpooling can reduce the number of vehicles near the school, especially during
inclement weather.
• _avoid parking on the opposite side of the street from the school. When it is necessary,
instruct children on how to safely reach the vehicle.
• Make sure that children are careful when opening vehicle doors and that they enter and
exit on the curbside of the vehicle. Children should not be allowed to cross in the middle
of the block to reach the vehicle.
• Drivers should not double park or block traffic. Waiting or parking in red zones is also
not allowed.
• Do not block buses or use areas designated for buses only. If an emergence vehicle
requires access,the area should be cleared.
• Never leave a vehicle unattended in a loading zone.
• Do not park in a crosswalk or pass a stopped vehicle allowing pedestrians to cross.
• Do not violate the law by using the excuse "I will just be here a minute" when picking up
or dropping off children. Violations still present a danger and cause congestion during
the time of day when it is most important to provide safety for children and avoid
congestion.
• Leann the traffic patterns at and near a school to avoid being a disruption.
• Pay attention to children getting in and out of vehicles. Children sometimes forget to use
the curb side door and exit suddenly.
Crossing Guards
The Cite is responsible for the assigmnent and designation of crossing guards for the schools
within the Cite Limits. Crossing Guards are employees under the Police Department and have
the force of law for traffic movements in school zones. Children and motorists should follow
their directions when directing traffic and helping children crossing the street.
II. AROUND SCHOOL BUSES
School Bus Safety—Children
When waiting for, riding, and exiting the school bus, children should follow these rules:
Getting on the School Bus
• When waiting for the school bus, stay away from traffic and avoid roughhousing or other
behavior that can lead to carelessness. Do not stray into streets, alleys, or private
property.
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• Lineup away from the street or road as the school bus approaches
• Wart until the bus has stopped and the door opens before stepping into the roadway
• Use the handrail when stepping onto the bus
Behavior on the Bus
• When on the bus, find a seat and sit down Loud talking or other noise can distract the
bus driver and is not allowed
• Never put head, arms, or hands out of the window, nor throw anything out of the window
• Keep aisles clear Books and bags are tripping hazards and can block the way in an
emergency
• Before you reach your stop, get ready to leave by getting your books and belongings
together
• At your stop, wait for the bus to come to a complete stop before getting up from your
seat Then, walk to the front door and exit using the hand rail
Getting off the School Bus
• If you have to cross the street in front of the bus, walk at least 10 feet ahead of the bus
along the side of the road, until you can turn around and see the bus driver
• Make sure the bus driver can see you
• Wart for a signal from the bus driver before beginning to cross
• When the bus driver signals, walk across the road, keep an eye out for sudden traffic
changes
• Stay away from the bus's rear wheels at all tunes
School Bus Safety—Parents
• If possible, accompany children to school bus stop and help them get in and out
• Teach children to follow common sense practices and ALWAYS STAY OUT OF THE
DANGER ZONE OF THE BUS.
n
School Bus Safety-Motorists
• When backing out of a driveway or leaving a garage, always watch out for children
walking or bicycling to school
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• When driving in neighborhoods with school zones, watch out for young people who may
be thinking about getting to school,but may not be thinking about getting there safely.
• Slow Down! Watch for children walking in the street, especially if there are no
sidewalks in the neighborhood.
• Slow down! Watch for children playing in and congregating near bus stops.
• Be Alert! Children arriving late for the bus may dart into the street without looking for
traffic.
• Learn to obey the school bus laws. Learn the "flashing signal light system" that school
bus drivers use to alert motorists of pending actions:
• Yellow Flashing Lights indicates that the bus is preparing to stop to load or
unload children. Motorists should slow down and prepare to stop their vehicles.
It also means that the motorist should NOT speed up to pass the bus before the red
flashing lights are on.
• Red Flashing Lights and extended stop arms and stop signs indicate that the bus
has stopped, and that children are getting on or off. Motorists must adhere to the
driving law below and only proceed when the red lights stop flashing and the
extended stop sign and bar is withdrawn, and the bus begins moving before they
can start driving again.
• Two Lane roadways, with traffic in both directions, both traffic lanes shall
stop.
• Multi-lane roadways with or without center turn lanes, traffic shall stop in
both directions.
• Roadways divided by raised medians, the traffic traveling in the same
directions as the bus shall stop. The traffic in oncoming direction on the
other side of the median shall slow and proceed with caution, but it is also
suggested that motorist stop for the ultimate safety.
School Zone Signs and Operations
School zones may be installed on streets that border school property line and where students
cross a roadway. The signs can be static or include flashers. The flashers are usually installed
on roadways with more than 5,000 vehicles per day. The signs conform to the standards and
specifications in the Texas Manual on Uniform Traffic Control Devices.
SCHOOL SCHOOL
SPEED SPEED
LIMIT LIMIT
15 20
WHEN SCHOOLDAYS
FLASHING �AM-S PM
School zone times shall be established and installed according to the following general
guidelines:
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• Morning Times—45 minutes before start to 15 minutes after the start of school.
• Midday—beginning to end of hunch period.
• Afternoon Times — 15 minutes before dismissal to 30 minutes after dismissal of school.
These times may be adjusted at each school based on individual campus requirements.
Parking Regulations
In order to promote safe and efficient traffic circulation around a school, it may be necessary to
regulate, restrict, or prohibit parking, stopping, or standing adjacent to the school grounds or at
an established school crossing. The Department of Public Works will determine if the street
needs parking restrictions.
Crosswalk Location and Installation
Crosswalks are located to enhance the utilization of sidewalks, to serve school routes and to
define the appropriate crossing area in the street at high pedestrian volume intersections. When
reviewing an area for installation of a crosswalk, the proximity to a school is one factor. Other
factors include: volunne of vehicular and pedestrian traffic, average vehicular speed, visibility
available to motorist and pedestrians, type of traffic controls present, width of street to be
crossed, and location of adjacent crosswalks.
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ATTACHMENT E
Speed Limits
Authority
Speed limits are set by statute by the Texas Transportation Code § 545.352. The statute specifies
the following speed limits:
• Streets in Urban Districts —30 mph
• Alley in Urban Districts — 15 mph
• State or Federal numbered highways outside of Urban Districts — 70 mph. -Any other
highway outside of the Urban District —60 mph.
These are known as 'prima facie" limits and do not require signs for enforcement. For example,
in the absence of any other speed limits sign, the speed limit is 30 mph in residential districts
within the Cite Limits. The Cite Council may alter the maximum or prima facie speed limits
based on an engineering and traffic study on any street or portion thereof within the Cite. The
altered speed limits are posted regulatory speed limit signs (signs with black text on white
background) and are considered prima facie (or legal)for enforcement.
Speed Zoning
When an engineering study detennines that statutory speed limits are not appropriate for the
existing road and traffic conditions, altered speed limits are established using speed zoning. The
types of speed zones are:
• Regulatory Speed Zones impose a restriction on a particular roadway and indicators of
the speed limitations imposed by physical and traffic conditions of the roadway.
Regulatory speed limits are posted using regulatory speed limit signs which has black
lettering on white background as shown in the Texas Manual on Uniform Traffic Control
Devices for Streets and Highways (TMUTCD).
• Construction Speed Zones may be regulatory or advisory speed zones through a
construction project depending on the importance of speed control in the construction
zone. Construction advisory signs are typically black lettering on an orange background.
• School Speed Zones are established in accordance with city policy on School Zone
Installation and Removal and in accordance with State Law. Maximum speed reduction
allowed is 15 mph under the posted speed limit.
• Advisory or Warning Speeds are desirable speeds for curves, intersections, or other
locations where design standards or physical conditions of the roadway restrict safe
operating speeds to value less that the maximum legal speeds or posted regulatory speed
limit. Advisory speed signs supplement other warning signs (such as for a curve) and
have a black message on a yellow background.
What is the Law?
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All drivers are required to obey the posted speed limits. These limits are designed to provide for
the orderly flow of traffic under normal driving conditions. During periods of heave traffic,
inclement weather, low visibility, or other poor driving conditions, speed must be adjusted so
that accidents will be avoided. In the absence of posted speed limits, prima facie speed limits are
in effect. Any speed in excess of the legal speed limit on that roadway will be considered prima
facie (or"on the face of it") evidence that the speed is unreasonable, non-prudent, and unlawful.
How are Speed Limits Established?
Regulatory speed zones are established in accordance with the procedures described in the
TxDOT manual "Procedures for Establishing Speed Zones". Posted speed limits are set be the
85th percentile method, which represents the speed of the majority of drivers will be traveling at
or below. Speed checks are conducted to determine the 85th percentile speed. The observed
free-flowing speed for vehicles is tallied and the 85th percentile speed is calculated using
collected data. To ensure a true reflection of normal traffic situation, speed checks are made on
average weekdays during off-peak hours, under favorable weather conditions.
The speed limit is normally set at the nearest value to the 85th percentile speed ending in 5 or 0.
The posted speed limit may be adjusted downwards of the 85th percentile speed based on the
following factors:
• Roadway pavement width of 20 feet or less.
• Curves and hills.
• Hidden driveways and other developments.
• High number of driveways.
• Crash histom.
• School crossings and characteristics of sites that generate traffic.
• Lack of striped, improved shoulders.
Once a speed limit is determined, the speed zone is added to the Ordinance 300 identifying the
limits and speed of the speed limit zone. _after approval be the Cite Manager, or their designee,
the sign shop is instructed to install the necessary signs at the locations approved and shown in
the Ordinance 300 memo.
Speed Limit Misconceptions
Studies have shown that there is no significant change in speeds following the posting of a
revised speed limit. This is true whether the speed limit is increased or decreased. Safety is also
not improved be establishing unreasonable low speeds limits. Some misconceptions about speed
limits include:
• Reducing the speed limit will not slow the speed of traffic:
• Reducing speed limits will necessarily decrease the number of crashes and increase
safety:
• Having a posted speed limit is not necessarily safer than an umposted speed limit: and
• Drivers always go 5 to 10 mph over the posted speed limit.
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Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
Why Do We Need Speed Limits?
Speed limits which are realistic and reasonable:
• Encourage compliance from a majority of the drivers:
• Give a clear reminder of reasonable and prudent speeds:
• Provide an effective enforcement tool to the police: and
• Encourage drivers to travel at the speed where the risk of crash involvement is the lowest.
Studies have shown crash rates are lowest at around the 85th percentile speed. Drivers traveling
significantly faster OR slower than this speed are at greater risk for being in a crash. It is not
high speeds alone that relate to crash risk: it is variation of speed within the traffic stream. In
fact, on a per mile driven basis, high speed roadways, like interstates, have a lower speed-related
fatality rate than low speed roadways because large variations in speed within the traffic stream
create more conflicts and passing maneuvers (and opportunities for driver error and collisions).
However, unrealistic speed limits:
• Discourage voluntary compliance:
• Create perception of"speed traps:
• Cause public antagonism toward the police:
• Create a bad image for a community in the eyes of non-residents: and
• May increase the potential for crashes.
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Engineering Division Traffic Control Sign Policy
ATTACHMENT F
Intersection Controls
I. STOP SIGNS
Stop Signs
A STOP sign is a sign used to direct motorists to stop at the spot where the STOP sign is located.
STOP signs are a method for controlling traffic at intersections where the normal application of
the right-of-way rule is insufficient to ensure safety and provide reasonable compliance with the
law. These signs are found on the right side of the roadway (and in some cases in the median to
increase visibility). When more than two directions are controlled by STOP signs, then a
supplemental ALL WAY plaque shall be used to inform motorists of the type of traffic control
that exists at the intersection. If a STOP sign is in its correct location and it cannot be seen very
well due to hills or curves, a STOP AHEAD warning sign may be used in advance on the
approach to the STOP sign.
Installation Police
STOP sign installations will be addressed according to the Cite of Friendswood Sign Police,
current edition. STOP signs at an intersection are installed only upon the approval of the Cite
Engineer and reflected in the Ordinance 300, after a careful investigation has been made of
existing conditions. The investigation is conducted using the guidelines for installing STOP
signs provided in the Texas Manual on Uniform Traffic Control Devices (TMUTCD).
Should STOP Signs Be Used to Control Speeding in Neighborhoods?
This is a question that is frequently asked or requested from citizens concerned about speeding in
their neighborhood. _although the Cite does share the concerns of the citizens about speeding
and safety in residential neighborhoods, the installation of STOP signs is not the appropriate way
to solve the problem of speeding. STOP signs are traffic control devices intended for assigning
rights-of-way, not controlling speed. Traffic calming devices (as stated in the City's Traffic
Calming Police) and police enforcement have been found to be much more effective in
controlling speeding.
STOP signs result in speed reduction only near the sign, and drivers tend to speed up between
STOP sign controlled intersections to make up for perceived lost time. _according to National
Engineering Transportation Study, when required to stop by cross street traffic. 50 o to 200 o of all
drivers come to a complete stop. 400o to 600o will come to a rolling stop below 5 mph, and 200o
to 400 o will pass through at higher speeds.
Often, unjustified STOP signs are ignored by motorists, which can be more dangerous than
speeding. Therefore, it is the City's police not to install STOP signs to control speeding.
_adverse hnpaets of Unjustified STOP Signs:
• Unjustified STOP signs cause motorists frustration when they are forced to stop for no
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Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
apparent reason. Unwarranted STOP signs result in disrespect for all signs and reduce
the effectiveness of STOP signs at other intersections where they are essential for safety.
• Vehicle emissions account for much pollution in the air. These emissions increase when
vehicles are accelerated and decelerated. It is important to minimize unnecessary stops
since steady speeds increase fuel economy and reduce vehicle emissions. Unwarranted
STOP signs increase the number of unnecessary stops and reduce the efficiency of our
transportation system which results in increased air pollution.
IL YIELD SIGNS
Yield Signs
At intersections where a full stop is not necessary at all times, consideration should be first given
to less restrictive measures such as a YIELD. A YIELD sign is used to assign rights-of-ways on
certain approaches to an intersection. Vehicle controlled by a YIELD sign need to slow down to
a speed that is reasonable for the existing conditions or stop when necessary to avoid interfering
with conflicting traffic.
Installation Police
YIELD sign installations will be addressed according to the Cite of Friendswood Sign Police,
current edition. YIELD signs at an intersection are installed only upon the approval of the Cite
Engineer and reflected in the Ordinance 300, after a careful investigation has been made of
existing conditions. The investigation is conducted using the guidelines for installing YIELD
signs provided in the Texas Manual on Uniform Traffic Control Devices (TMUTCD).
III. TRAFFIC SIGNAL INSTALLATION
Purpose
When warranted, properly designed, located, and operated, traffic control signals can provide
orderly movement of vehicular and pedestrian traffic, can reduce the frequency and severity of
certain types of crashes, and can increase the traffic handling capacity of the intersection. These
benefits have perpetuated a common belief that traffic signals provide the solution to all traffic
problems at intersections.
However, when unwarranted and improperly designed, traffic signals cause excessive delays,
driver frustration, disobedience, overuse of less adequate routes, and increased collisions. This is
why the Cite of Friendswood looks at every intersection being considered for signalization very
carefully to determine that a signal is indeed needed.
Signal installation requests, like all other requests for signage, starts with a traffic concern report
to the Engineering Division of the Department of Public Works. There will be an initial review
and determination as stated in the procedures in the Cite of Friendswood's Sign Police. As is
trite with all warrant justifications, the same is trite of Traffic Signals having to meet the analysis
and standards in the Texas Manual on Uniform Traffic Control Devices (TMUTCD).
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Engineering Division Traffic Control Sign Policy
Construction, Operation, and Maintenance
Once the signal is approved for placement, plans are created for construction. Depending on the
conditions at the intersection, it may require up to two years to recommend design, and construct
a traffic signal. Once constructed, the traffic signal is maintained by either Texas Department of
Transportation (TxDOT) for signals on highways and Fann-To-Market Roads, Harris County in
Harris County or the Cite in Galveston County. If a traffic signal is malfunctioning, please
notify the Police Department.
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City of Friendswood Design Criteria Manual
Department of Public Works APPENDIX G
Engineering Division Traffic Control Sign Policy
ATTACHMENT G
Children At Play Signs
We Have a Lot of Small Children in Our Neighborhood; can we get a "Children at Play"
sign?
The City of Friendswood often receives a lot of requests to install signs warning drivers of the
possible presence of"Children at Play." However, these signs may give a false sense of security
and have been proven to be ineffective. In residential areas within the City, drivers should
expect children to be present. Studies have shown that signs attempting to warn motorists of
normal conditions do not achieve the desired safety benefits.
The City of Friendswood does not want to endorse that children can or should be allowed to play
safely on or near streets. These signs are not warranted or part of the Texas Manual on Uniform
Traffic Devices (TMUTCD). Current Children at Play signs exist in the city in residential areas,
but will not be replaced if faded, stolen, or destroyed. However, the City does have in place a
process wherein the HOA can petition for these types of signs to be put in their neighborhood in
the rights-of-way. These will still need to follow the typical procedures for all other signage
with the addition of the following:
• The HOA will have to submit minutes that this was approved at a general HOA meeting
with advanced notification relayed to residents of the proposal to install these signs.
• There will need to be a plan establishing the locations of the signs to be installed.
• If approved by the HOA and the Traffic Committee,the HOA would have to purchase the
signs, sign bases, and poles and bring them to the Department of Public Works. The
Department of Public Works will install the signs at the agreed upon locations that have
been approved.
• The signs would have to be added to the insurance policy of the HOA.
• As stated previously, stolen, damaged, or faded sings will not be replaced by the City.
SLOW SLOW CAUTION
Ot A )L
CNAW
CHILDREN CNI
PLAYING a PLAY
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City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
ATTACHMENT H
Speed Bumps, Humps, and Lumps
Speed Bumps. Humps, and Lumps are traffic calming devices that use vertical deflection to slow
vehicular traffic in order to improve safety conditions. _although their uses are effective in
keeping vehicle speeds down. Engineering Studies have shown that drivers will increase their
speed in between vertical speed traffic calming devices to make up for perceived lost time due to
slowing down to negotiate the vertical device.
Speed Bumps
Speed Bumps are an abrupt raised area in the pavement surface, effective at controlling speeds
on low volume private driveways and parking lots and have the following characteristics:
• Typically they are 3 to 6 inches in height with a travel lane width of 6 to 12 inches.
• Cause significant driver discomfort at typical residential speeds.
• Cause vehicles to slow at 5 mph or less at the bump.
• Considered an increased liability risk on public roads.
• Trek, Emergence Response, cargo, and bus passengers more likely to be affected.
• Maintenance headache.
Speed Humps
Speed Humps are a gradual raised area in the pavement surface and are typically for use in
residential and low speed roadways, and have the following characteristics:
• They are typically 3 1_ inches in height with a travel length of 4 to 6 feet.
• Create a gentle rocking motion slowing most vehicles down to 15 to 20 mph, and 25 to
30 mph when properly spaced.
• They are typically painted to identify vertical change in the roadway.
• Need to be properly designed, marked, and signed according to standards in the
TNIUTCD.
• Effective at controlling speeds without creating accidents or imposing unreasonable or
unacceptable safety risks.
• Either permanent bituminous ones or portable ones can be installed: there are pros and
cons to each type.
• Can be utilized as a raised crosswalk as well.
Speed Lumps
Speed Lumps are relatively new and have the effect of slowing vehicles down as does a speed
bump, but the main problem is that speed humps still cause ALL traffic to slow down. Speed
lumps are a hybrid combination of speed bumps and bumps. Speed lumps are in a nominal size
and placed with a gap between them. This gap is spaced (normally 2 feet) so that emergency
Revised U7/U1/2O17 Appendix G Page 37 of 38
City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK G
Engineering Division Traffic Control Sign Policy
vehicles, such as fire trucks and ambulances, which have a wider wheel base width, can easily
transverse the gaps where normal vehicles cannot. _added to the safety issue is that the edges
near the gaps are either parabolic or flat.
Revised U7/U1/2O17 Appendix G Page 38 of 38
City of Fnendswood Design Criteria Nlanual
Department of Public Works APPENDLK H
Engineering Division Streetlight Policy
APPENDIX H
Streetlight Policy
L SUXIXLARY:
The goal of this police is to provide for effective procedures for review, approval, and
installation of streetlighting throughout the Cite of Friendswood. This Policy will
enforce requirements specifically targeting areas where existing lighting conditions are
deemed to be insufficient for public safety and areas of new residential, commercial, and
industrial development.
IL GENERAL:
Streetlight installation is intended as the basis for fixed lighting on all roadways. Careful
considerations shall be taken in the making streets and roadways safe during hours of
darkness. Certain criteria as shown in the Warranting section of this police shall be a part
of the evaluation process for the need of street lights. Streetlights are to be installed on
Cite owned streets to illuminate the roadway. They are not to be installed on private
streets, parking lots, or for security lighting. A street segment shall be in the Cite Limits
in order to be eligible for street lights. All street lights are installed, owned, and
maintained by Texas New Mexico Power Company (in Galveston County) or
CenterPoint Energy (in Harris County). Once a street light is installed, the Cite shall pay
the monthly operating and maintenance cost of the streetlight.
III. WARRANTING:
The Warranting Process that is used is based on the Transportation _association of
Canada (T_aC) Guide for Roadway Lighting (27) which was based on the Roadway
Lighting Handbook published by the U.S. Department of Transportation. This Streetlight
Warrant system is a conditional based and not observed based system. Factors that are
taken into consideration are divided into four sections: 1) Geometric, 2) Operational, 3)
Environtnental, and 4) Collision. Each individual factor is rated from 1 to 5 in
accordance with the parameters listed in the warranting worksheet. Each individual
factor is weighted as a percentage of the whole, and on a point system of 0 to 100, the
warranting condition must achieve a minimum of 60 points to warrant the installation of a
streetlight, yet the Cite Engineer is the final authority of approval for a streetlight.
a. GEOMETRIC SECTION:
There are eight factors that are considered under the Geometric Section of the
Streetlight Warrant Process:
• Total number of lanes including center turn lanes.
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Engineering Division Streetlight Policy
• Width of the lanes.
• Number of median openings per mile.
• Number of driveways and entrances per mile.
• Horizontal curve radius.
• Vertical grade.
• Sight distance.
• Parking.
b. OPERATIONAL SECTION:
There are five factors that are considered under the Operational Section of the
Streetlight Warrant Process:
• Signalized intersections.
• Left turn lanes.
• Median width.
• Posted speed.
• Pedestrian activity.
c. ENVIRONMENTAL SECTION:
There are five factors that are considered under the Environmental Section of the
Streetlight Warrant Process:
• Percentage of development adjacent to roadway.
• Area classification
• Distance from development to roadway.
• Ambient lighting.
• Raised median curb.
d. COLLISON SECTION:
There is only one factor in the Collision Section of the Streetlight Warrant
Process. This is a Night-to-Day ration of accidents occurring on the street that is
being reviewed.
Lighting is warranted where a total point-score of 60 or more is achieved. Lighting of
equal scores may be prioritized by also using the different sections in the Warrant
Worksheet.
IV. NEW SUBDIVISION INSTALLATION
As per the approved Streetlight Policy for New Development approved by Friendswood
Cite Council _fiction, the following shall apple:
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City of Fnendswood Design Criteria Manual
Department of Public Works APPENDIX H
Engineering Division Streetlight Policy
a. All subdivision plats shall include a provision for streetlighting using concrete
poles.
b. Streetlights shall be provided at all corners and intersections and, in addition, at
two hundred fifty (250) foot intervals along residential streets. Additional lights
may be required at the option of the City Engineer.
c. Each streetlight shall be at least one hundred (100) watts on local and collector
streets and two hundred fifty(250) on major thoroughfares.
d. All necessary easements for streetlighting shall be shown on the final plat prior to
final approval by the City of Friendswood and the Planning and Zoning
Commission.
e. The City shall authorize the installation of public streetlights after acceptance of
the subdivision by the City for the contractor's one-year maintenance period.
V. PRIVATE SUBDIVION INSTALLATION
a. The Developer/Owner my install a private streetlight system in accordance with
the standards outlined above, except that ornamental poles other than concrete
may be used. Wood poles shall not be used in any new streetlighting system.
b. The Developer/Owner shall be required to provide for the installation of this
private streetlight system and also provide for its perpetual operation and
maintenance,
c. The Final Plat shall indicate that streetlighting is private and this shall also be
labeled on all construction plans.
VI. EXSISTING SUBDIVISION INSTALLATION
The City's franchise utilities Texas-New Mexico Power (in Galveston County) and
CenterPoint Energy (in Harris County) have established programs for installing
streetlights in the City. The City will evaluate all requests for streetlights within the
guidelines of this policy and the warranting system.
a. STREETLIGHT POLE TYPES
In all cases, any pole to be installed shall match any existing poles already
installed inside the subdivision.
• Wooden Poles — lights shall only be installed on existing wooden utility
poles served by overhead distribution. The light shall be installed on the
existing wooden pole. An additional wooden pole may be installed to
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City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK H
Engineering Division Streetlight Policy
serve a specific need. Other than state previously, no wooden shall be
used in areas where the power is distributed underground.
• Concrete Poles — shall be installed on other areas such as
commercial/industrial/collector roads within the City Limits.
• Metal Poles — shall be used on all thoroughfare roads inside the Cite
Limits.
• The exception to the above mentioned poles would be the streetlights
required in the downtown district by the Design Criteria Manual.
b. STREETLIGHT SPACING AND PATTERN
• All intersections shall have a minimum of one (1) streetlight.
• Undivided roadways less than sixty(60) foot width from back of curb to
back of curb shall stagger the streetlighting along both sides of the
roadway.
• Undivided roadways greater than sixty (60)foot width from back of curb
to back of curb shall pair the streetlighting along both sides of the
roadway.
• Divided roadways shall be pair the streetlighting along both sides of the
roadway or as an option approved by the Cite Engineer, substitute one (1)
streetlight in the middle of the median/dividing device in lieu of two (2)
along both inside lanes of the divided roadway.
• Spacing in rural areas that have large acreage lots may be extended to five
hundred (500) foot spacing and staggered along both sides of the roadway.
c. STREETLIGHT COST
The cost of installing new or additional streetlighting would be absorbed by the
Cite of Friendswood, however in the event that there is not available power on the
roadway (either overhead or underground), the Cite would partner with the
Homeowners _association or other responsible entity.
• In either case, the City would need to have a letter from the HOA or other
entity approving the installation and location of the new streetlight.
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Department of Public Works APPENDLK H
Engineering Division Streetlight Policy
• The HOA or other entity approving the installation would be required, if
power is not available in the Right-Of-Way of the roadway, to purchase,
provide, have surveyed, and recorded all necessary easements for the
installation of said pole.
VII. STREETLIGHT REQUEST PROCEDURE
a. _applicant completes a request form (Exhibit "A") and submits to the Department
of Public Works Engineering Division.
b. Engineering Division informs approving authority of the request, and steps
needed to complete the process.
e. Engineering Division gathers information for Warranting Worksheet.
d. Engineering draws Exhibits and forwards information to the Cite Engineer for
review.
e. _after Cite Engineer _approves. Engineering Division requests that Cite Manager
approve the installation of the streetlight and gives authorization to the
appropriate franchise utility to install.
f The appropriate franchise utility reviews the streetlight request and conducts the
installation (if approved) of the proposed streetlight within a designated time
period.
g. Engineering Division distributes confirmation letter to the applicant and
approving authority giving an approximate date of installation.
VIII. LIGHTING PROBLEMS
All streetlights, poles, and wiring remain the property of the franchise utility. If the
streetlight is not working properly, or are damaged please contact the appropriate
franchise utility.
a. Galveston County would be Texas New Mexico Power at (281) 996-0453.
b. Harris County would be Center-Point Energy at (713) 307-2222.
Please give the franchise utility the pole number(approximately six (6) feet above
ground) facing the roadway. If one is not visible, get the address or distance from the
nearest intersection.
If tree limbs are blocking the light, please call the Department of Public Works at (281)
996-3380.
Revised U7/()1/2217 Appendix Page 5 of 7
Cite of Friendswood Design Criteria Manual
Department of Public Works APPENDIX H
Engineering Division Streetlight Polic`
City! Of T1'$endswood
Department of Public Works
Engineering Division
ex
1306 Deepivood Drive
Friendswood, Texas 775-16--190-1
STREETLIGHT REQUEST FORM
(FOR NEW STREETLIGHT INSTALLATION)
NOTE TO APPLICANT:
The City of Friendswood will consider approving the placement of a streetlight in a specific location if certain
guidelines, conditions, and warrants are met.
Contact Information (to be completed by applicant)
Name: Email:
Phone: FAX:
Street Address:
Cite: State: Zip Code:
Request Information(to be completed by applicant)
Location of Streetlight Request(i.e. pole#,intersection, address,other):
Reason and Nature of Request:
Please indicate how you prefer to he notified of the results of your application:
Email Phone FAX Mail
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City of Fnendswood Design Criteria Manual
Department of Public Works APPENDLK H
Engineering Division Streetlight Policy
Signahure of-4pphcant Date of Submittal
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