HomeMy WebLinkAboutOrdinance No. 87 ORDINANCE NUMBER O
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PLUMBING CODE
FOR
CITY OF FRIENDSWOOD TEXAS
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_ 5
1966
Price $ per Copy
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TABLE OF CONTENTS
CAPTION PAGE
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CHAPTER 1 TITLE CITED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ,
CHAPTER2 INTENT AND PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 �
CHAPTER 3 PIPING AFFECTED BY THIS ORDINANCE. . . . . . . . . . . . . . . 11
CHAPTER4 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
CHAPTER5 LICENSING REQUIREMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER6 EXEMPTED ACTIVITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12'
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-i CHAPTER 7 ADMINISTRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
CHAPTER 8 PLUMBING APPEALS AND ADVISORY BOARD. . . . . . . . . . . . . 14
CHAPTER 9 PERMITS , FEES AND INSPECTIONS . . . . . . . . . . . . . . . . . . . 15
CHAPTER10 BONDING PROVISION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CHAPTER11 GENERAL REGULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CHAPTER 12 MATERIALS - QUALITY AND WEIGHT. . . . . . . . . . . . . . . . . . 20
CHAPTER 13 JOINTS AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 25
CHAPTER14 TRAPS AND CLEANOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
CHAPTER 15 INTERCEPTORS AND BACKWATER VALVES . . . . . . . . . . . . . . . 29
CHAPTER16 PLUMBING FIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CHAPTER17 HANGERS AND SUPPORTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
' CHAPTER 18 INDIRECT WASTE PIPING AND SPECIAL WASTES . . . . . . . . 33
CHAPTER 19 WATER SUPPLY AND DISTRIBUTION. . . . . . . . . . . . . . . . . . . 34
CHAPTER 20 DRAINAGE SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
CHAPTER21 VENTS AND VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
CHAPTER22 NATURAL GAS PLUMBING. . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
CHAPTER 23 TRAILER PARK PLUMBING AND DRAINAGE SYSTEMS . . . . . . 67
CHAPTER 24 INDIVIDUAL SEWAGE DISPOSAL SYSTEM. . . . . . . . . . . . . . . 73
CHAPTER 25 INDIVIDUAL WATER SUPPLIES . . . . . . . . . . . . . . . . . . . . . . . 80
CHAPTER 26 PENALTY AND CLOSING PROVISIONS . . . . . . . . . . . . . . . . . . Sib
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AN ORDINANCE
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r, AN ORDINANCE REPEALING ALL ORDINANCES , OR PARTS OF ORDI-
NANCES , OR AMENDMENTS THERETO , THAT CONFLICT WITH THE
TERMS OR CONDITIONS OF THIS ORDINANCE AND ENACTING IN
LIEU THEREOF A NEW ORDINANCE , REGULATING PLUMBING WORK
IN THE CITY OF FriendswOO4 TEXAS ; DEFINING CERTAIN TERMS ;
PROVIDING FOR CERTAIN EXEMPTIONS ; PROVIDING FOR THE
ENFORCEMENT OF THIS ORDINANCE AND THE ISSUANCE OF PER-
MITS AND ESTABLISHING CERTAIN FEES ; PROVIDING FOR
SPECIFICATIONS , MATERIALS AND METHODS OF PLUMBING IN-
STALLATIONS ; PROVIDING PENALTIES FOR VIOLATION OF THIS i
ORDINANCE; PROVIDING A SEVERABILITY CLAUSE.
Be it ordained by the City Council of the City of Friendswood
CHAPTER 1
TITLE CITED
1 . 1 This ordinance shall be known as the Plumbing Ordinance of the
City of Friendswood and may be cited as such.
It shall be unlawful for any person, association of persons )
co-partnership, or corporation to engage in the business of plumb-
ing, or do or perform any plumbing as defined in this ordinance ,
r without first having procured the necessary licenses and permits as
hereinafter provided for, and all plumbing, plumbing work and work-
manship and materials shall meet the requirements of this ordinance
and shall pass all inspections required in this ordinance in regard
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to the work done.
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CHAPTER 2
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INTENT AND PURPOSE
! 2. 1 PURPOSE: For the protection and preservation of life and of
the public health, safety, property and the general welfare of the
people, the following provisions are enacted relating to the instal-
lation, alteration or repair of pipes , fittings , and fixtures for
water, sewage and natural gas in all buildings and structures and on
-- all property now erected or to be erected , changed, constructed, re-
constructed, repaired or altered in the City of Friendswood , and
I outside the City of Friendswood if same be connected to either the
t City water or sewerage systems . The intent and purpose of this
ordinance is to regulate the construction, erection, enlargement ,
V alteration, or repair of all piping, fittings , fixtures , etc . , used
i for the conduction of water , sewage and natural gas in or on and
about any and all premises in the City of Friendswood , and outside
the boundaries of the City of Friendswood if same be connected to
1 either the City water or sewerage systems .
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CHAPTER 3
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PIPING AFFECTED BY THIS ORDINANCE
3. 1 EXTENT OF APPLICATION: This ordinance shall apply to all plumb-
ing as herein defined within the boundaries of the City of
Friendswood
Any plumbing outside the boundaries of the City of Friendswood
j connecting to either the' City water or sewerage systems shall
meet all the requirements of this ordinance as to methods of instal-
lation and materials and shall be inspected by the City Plumbing
Inspector.
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3 . 2 EXCLUSION: This paragraph shall not apply to that work done
by authorized employees of the City of Friendswood in the laying of
City water mains and services and City sewer mains and services , nor
to the installation of gas distributing mains and services in the
streets and al-leys by authorized employees of any gas distributing
company .
CHAPTER 4
DEFINITIONS
ACCEPTED STANDARDS : Accepted standards are the standards cited in
this Ordinance , but may include additional standards approved by the
Plumbing Appeal and Advisory Board with the concurrence of the Chief _
Plumbing Inspector.
AIR GAP: An air._gap in a water-supply system is the unobstructed
vertical distance through the free atmosphere between the lowest
opening from any pipe or faucet supplying water to a tank, plumbing
fixture, or other device and the flood-level rim of the receptacle.
AIR MIXER: That portion of an injection (Bunsen) type burner into
which the primary air is introduced.
AIR SHUTTER: An adjustable device for varying the size of the pri-
mary air inlet or inlets .
ANCHORS: See Supports .
APPLIANCE - GAS: A gas appliance is any device which utilizes gas
fuel to produce light , heat or power .
APPLIANCE FLUE: The flue passages within the appliance.
APPROVED: Approved means accepted or acceptable under an applicable
specification stated or cited in this Code .
AUTOMATIC GAS SHUT-OFF VALVE: A device so constructed that the at-
tainment of a temperature or pressure in the medium being heated in
excess of some predetermined limit acts upon a chemical , metallic
or diaphragm element in such a way as to cause the gas to the ap-
pliance to be shut off and remain off .
AUTOMATIC IGNITION: Automatic ignition shall be interpreted as means
which provide for ignition of the gas at the burner when the gas
burner valve controlling the gas to that burner is turned on, and
will effect re-ignition if the flames on the burner have been extin-
guished by means other than closing the gas burner valve .
AUTOMATIC PILOT: Consists of an automatic pilot device and pilot
burner securely assembled in fixed functional relationship.
AUTOMATIC PILOT DEVICE: A device employed with gas burning equip-
ment which will automatically shut off 'the gas supply to the burner
being served by either direct or indirect means when the pilot flame
is extinguished . The pilot burner may or may not be constructed
integrally with the device.
AUTOMATIC PILOT, COMPLETE SHUT-OFF TYPE: An automatic pilot for
shutting off, automatically, the gas supply to the main burner and . }
pilot in event of pilot or gas failure, and also for preventing the
gas from being turned into the main burner unless the pilot is light-
ed .
BACKFLOW: Backflow is the reverse flow (by gravity) of water in a
water distribution system.
BACK-SIPHONAGE: Back siphonage is the reverse flow (induced by }
siphonage) of water in a water distribution system. See Backflow. '
BACKFLOW PREVENTER: A backflow preventer is a device or means to
prevent backflow into the potable water system.
BATTERY OF FIXTURES : A battery of fixtures is any group of two or
more similar adjacent fixtures which discharge into a common hori-
zontal waste or soil branch.
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BAFFLE: An object placed in an appliance to. change the direction of ,
or retard the flow of air, air-gas mixtures , or flue gases .
BOILER: A self-contained gas burning appliance for supplying hot
water or low pressure steam, primarily intended for domestic and
commercial space heating application.
BOILER BLOW-OFF: A boiler blow-off is an outlet on a boiler to per-
, mit emptying or discharge of sediment, i
BRANCH: A branch is any part of the piping system other than a main,
riser, or stack.
BRANCH, FIXTURE: See Fixture Branch.
BRANCH, HORIZONTAL: See Horizontal Branch.
_ BRANCH INTERVAL: A branch interval is a length of soil or waste
stack corresponding in general to a story height , but in no case
less .than 8 feet within which the horizontal branches from one floor
or story of a building are connected to the stack.
BRANCH LINE - GAS: Gas piping which conveys gas from a supply line
_ to the appliance. ,
BRANCH VENT: A branch vent is a vent connecting one or more indivi-
dual vents with •a vent stack or stack vent .
BUILDING: A building is a structure built , erected, and framed of
component structural parts designed for the housing, shelter , en-
closure, or support of persons , animals or property of any kind.
BUILDING DRAIN: A building (house) drain is that part of the lowest
piping of a drainage system which receives the discharge from soil ,
waste, and other drainage pipes inside the walls of the building and
conveys it to the building (house) sewer beginning 3 feet outside the
building wall .
BUILDING SEWER: The building (house) sewer is that part of the hori-
zontal piping of a drainage system which extends from the end of ,lthe
building drain and which receives the discharge of the building drain
and conveys it to a public sewer, private sewer, individual sewage-
_, disposal system or other point of disposal .
BUILDING TRAP: A building (house) trap is a device, fitting, or as-
sembly of fittings installed in the building drain to prevent circu-
lation of air between the drainage system of the building and the
building sewer.
BTU: Abbreviation for British Thermal Unit which is the quantity, of
heat required to raise the temperature of one pound of water one de-
gree Fahrenheit .
BURNER: A device for the final conveyance of the gas , or a mixture
of gas and air, to the combustion zone.
CENTRAL HEATING GAS APPLIANCE: A vented gas-fired appliance compris-
ing the following classes as defined herein: Boiler, Central Furnace,
Floor Furnace, or Vented Recessed Heater.
CHIMNEYS : A. Factory-Built Chimneys - Chimneys that are factory
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made, listed by a nationally recognized testing
agency, for venting as appliances , gas incinerators ,
_ and solid or liquid fuel burning appliances .
_ B . Masonry Chimneys - Field constructed chimneys built
in accordance with nationally recognized codes or
standards .
C. Metal Chimneys - Chimneys made of metal of adequate
thickness, galvanized or painted unless suitably cor-
rosion resistant , properly welded or riveted and built
in accordance with nationally recognized codes or
h, standards .
CIRCUIT VENT: A circuit vent is a branch vent that serves two or
_ more traps and extends from in front of the last fixture connection
of a horizontal branch to the vent stack,
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CITY: Where the word " City" is used in this Code, it shall mean the
City oiFr1engSWQ11As , and shall include the area within the corporate
limits of the City and with respect to plumbing , shall include out-
side the corporate limits that which is connected to the City water
or sewer system.
CLOSED WATER PIPING SYSTEM: A system of water piping where a check
valve or other device prevents the free return of water or steam to
the water main.
CLOTHES DRYER: A device used to dry wet laundry by means of heat
derived from the combustion of fuel gas .
CODE: The word " Code" when used alone shall mean these regulations ,
subsequent amendments thereon or any emergency rule or regulation
which the Administrative Authority having jurisdiction may lawfully
adopt .
COMBINATION FIXTURE: A combination fixture is a fixture combining
one sink and tray or a two-or three-compartment sink or tray in one
unit .
COMBINED BUILDING SEWER: A combined building sewer receives storm
water and sewage .
COMBINATION WASTE AND VENT SYSTEM: A combination waste and vent
system is a specially designed system of waste piping embodying the
horizontal wet venting of one or more sinks or floor drains by means
of a common waste and vent pipe adequately sized to provide free
movement of air above the flow line of the drain.
COMBUSTION: Combustion, as used herein, is the rapid oxidation of
fuel gases accompanied by the production of heat , or heat and light .
COMBUSTION CHAMBER: The portion of an appliance within which com-
bustion occurs .
COMBUSTIBLE CONSTRUCTION: By combustible construction is meant a
combustible wall or combustible surface constructed of wood, com-
position, or of wooden studding and lath and plaster,
COMBUSTION PRODUCTS : Constitutes resulting from the combustion of
a fuel with the oxygen of the air, including the inerts but exclud-
ing excess air.
COMMON VENT: A common vent is a vent connecting at the junction of
2 fixture drains and serving as a vent for both fixtures .
CONCEALED GAS PIPING: Gas piping which, when in place in the finish-
ed building, will be hidden from view by the structure.
CONDENSATE - (Condensation) The liquid which separates from a gas
(including flue gas) due to a reduction in temperature.
CONSUMER' S GAS PIPING: All gas piping and fittings extending from
the point of delivery to the outlets , exclusive of piping, meters ,
regulators , valves , fittings , etc, owned by the gas company.
CONTINUOUS VENT: A continuous vent is a vertical vent that is a
continuation of the drain to which it connects .
CONTINUOUS WASTE: A continuous waste is a drain from two or three
fixtures connected to a single trap.
CROSS CONNECTION: A cross connection is a physical connection or
other arrangement thru which a potable water system may be contami-
nated by BACK SIPHONAGE or BACKFLOW.
Direct Cross Connection: A direct cross connection is a physical
connection between a potable water system and water of unknown
quality.
Indirect Cross Connection: An indirect cross connection is any
arrangement , other than a direct cross connection, whereby an _
outlet of a potable water system may come in contact with water
of unknown quality.
DEAD END: A dead end is a branch leading from a soil , waste, or -,
vent pipe, building drain, or building sewer, which is terminated at
a developed distance of 2 feet or more by means of a plug or other -
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closed fitting.
DEMAND - GAS : The maximum amount of gas required per unit of time,
usually expressed in cu. £t , per hr. , or BTU per hr. , required for
the operation of the appliance or appliances supplied.
DEVELOPED LENGTH: The developed length of a pipe is its length a-
long the center line of the pipe and fittings .
DIAMETER: Unless specifically stated, the term "Diameter" is the
nominal diameter as designated commercially .
DIVERSITY FACTOR: Ratio of the maximum probable demand to the maxi-
mum possible demand .
DOUBLE OFFSET: A double offset is two changes of direction install-
ed in succession or series in continuous pipe.
DRAFT HOOD: A device built into an appliance, or made a part of the
vent connector from an appliance, which is designed to (1) insure
the ready escape of the products of combustion in the event of no '
.- draft , back draft , or stoppage beyond the draft hood; (2) prevent ,
a back draft from entering the appliance; and (3) neutralize they
effect of stack action of the vent Upon the operation of the ap-
pliance.
DRAIN: A drain is any pipe which carries waste water or water-
borne wastes in a building drainage system.
- DRAINAGE PIPING: See Drainage System.
r DRAINAGE SYSTEM: A drainage system (drainage piping) includes all
the piping within public or private premises , which conveys sewage,
rain water, or other liquid wastes to a legal point of disposal ,
but does not include the mains of a public sewer system or private
or public sewage-treatment or disposal plant .
DUAL VENT: See Common Vent .
DUCT FURNACE: A furnace normally installed in distribution ducts
or air conditioning systems to supply warm air for heating. This
definition shall apply only to an appliance which depends for air
circulation on a blower not furnished as part of the furnace.
DURHAM SYSTEM: Durham System is a term used to describe soil or
waste systems where all piping is of threaded pipe, tubing, or other
such rigid construction, using recessed drainage fittings to corres-
pond to the types of piping.
EFFECTIVE OPENING: The effective opening is the minimum cross-
sectional area at the point of water-supply discharge, measured or
expressed in terms of (1) diameter of a circle, (2) if the opening
is not circular, the diameter of a circle of equivalent cross -
sectional area. (This is applicable to air gap. )
EXISTING WORK: Existing work is a plumbing system or any part
thereof which has been installed prior to the effective date of
this Code .
EXPOSED PIPING: Piping which will be in view in the finished struc-
ture.
FIRING VALVE: A valve of the plug and barrel type designed for use
{ with gas , and equipped with a lever handle for manual operation and
a dial to indicate the per cent of opening.
FIXTURE BRANCH: A fixture branch is a pipe connecting several fix-
tures .
FIXTURE DRAIN: A fixture drain is the drain from the trap of a fix-
ture to the junction of that drain with any other drain pipe.
FIXTURE SUPPLY: A fixture supply is a water-supply pipe connecting
the fixture with the fixture branch. '
1. FIXTURE UNIT: A fixture unit is a measurement used to express the
load producing effects of different kinds of plumbing fixtures .
FIXTURE-UNIT FLOW RATE: Fixture-unit flow rate is the total dis-
charge flow in GPM of a single fixture divided by 7 . 5 which provides
the flow rate of that particular plumbing fixture as a unit of flow.
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FLAME SAFEGUARD: A device which will automatically shut of-f the gas
supply to a main burner or group of burners when the means of igni-
tion of such burners becomes 'inope:ra.t:i.ve„ and when flame failure
occurs on the burner or group of burners .
FLOOR FURNACE: A completely self-contained unit furnace suspended
from the floor of the space being heated, taking air for combustion
from outside this space, and with means for observing flames and
lighting the appliance from such space.
FLOODED: A fixture is flooded when the liquid therein rises to the
flood-level rim.
FLOOD LEVEL: See Flooded.
FLOOD-LEVEL RIM: The flood-level rim is the top edge of the recep-
tacle from which water overflows .
FLUE COLLAR: That portion of an appliance designed for the attach-
ment of the draft hood or vent connector.
FLUE GASES: Products of combustion plus excess air in appliance
flue's or heat exchangers (before the draft hood or draft regulator) .
FLUSHOMETER VALVE: A flushometer valve is a device which discharges
a predetermined quantity of water to fixtures for flushing purposes
and is actuated by direct water pressure. _
FLUSH VALVES: A flush valve is a device located at the bottom of
the tank for the purpose of flushing water closets and similar fix-
tures .
FROSTPROOF CLOSET: A frostproof closet is a hopper that has no
water in the bowl and has the trap and the control valve for its
water supply installed below the frost line.
FURNACE - CENTRAL FURNACE: A self-contained, gas burning appliance
for heating air by transfer of heat of combustion through metal to
the air , and designed to supply heated air through ducts to spaces
remote from or adjacent to the appliance location.
GAS COMPANY: The organization operating the gas distribution
system.
GAS HOSE: A gas conduit which depends for tightness on joint pack
ing, or on any wall structure other than that formed by a continuous
one-piece metal tubing member.
GAS VENTS: A. Type B Gas Vents . Factory made gas vents listed by
a nationally recognized testing agency for venting
listed or approved appliances equipped to burn only --
gas .
B. Type B-W Gas Vents . Factory made gas vents listed
by a nationally recognized testing agency for vent
ing listed or approved gas-fired vented recessed
heaters .
C. Type C Gas Vents . Vents constructed of sheet cop-
per not less than No . 24 U. S . Standard gage or
galvanized iron of not less than No. 20 U. S . Stand-
ard gage, or other approved noncombustible corrosion-
resistant material .
GRADE: Grade is the slope or fall of a line of pipe in reference to
a horizontal plane. In drainage it is usually expressed as the fall
in a fraction of an inch per foot length of pipe.
GRAVITY: See Specific Gravity.
GREASE INTERCEPTOR: See Interceptor.
GREASE TRAP: See Interceptor.
HANGERS : See Supports .
HORIZONTAL BRANCH: A horizontal branch is a drain extending lateral-
ly from a soil or waste stack or building drain, with or without
vertical sections or branches , which receives the discharge from one
or more fixture drains and conducts it to the soil or waste stack or
to the building (house) drain.
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HORIZONTAL PIPE: Horizontal pipe means any pipe or. fitt.ing which
makes an angle of less than 45 degrees with the horizontal .
HOTEL AND RESTAURANT RANGE: A gas appliance of the floor type pro-
viding for top cooking, roasting, baking or broiling, or any com-
bination of top cooking with any of these other functions and not
designed specifically for domestic use.
HOUSE DRAIN: See Building Drain.
HOUSE PIPING - GAS PLUMBING:
A. The gas piping from the point where it enters the building
or foundation to and including the outlets . (Applicable ,
where the gas meter is located some distance from the
building . )
B. The gas piping from the gas meter to and including the
outlets . (Applicable where the gas meter is located in
or immediately adjacent to the building . )
HOUSE SEWER: See Building Sewer.
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HOUSE TRAP: See Building Trap .
INCINERATOR: An appliance which is used to reduce refuse material'
to ashes .
INDIRECT WASTE PIPE: An indirect waste pipe is a pipe that does
not connect directly with the drainage system but conveys liquid
wastes by discharging into a plumbing fixtire or receptacle which)
is directly connected to the drainage system.
INDIVIDUAL VENT: An individual vent is a pipe installed to vent
a fixture trap and which connects with the ' vent system above the
fixture served or terminates in the open air.
INDUSTRIAL WASTES: Industrial wastes are liquid wastes resulting:
from the processes employed in industrial establishments and are
free of fecal matter.
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INSANITARY: Contrary to sanitary principles - injurious to health.
INTERCEPTOR: An interceptor is a device designed and installed so ci
as to separate and retain deleterious , hazardous , or undesirable
matter from normal wastes and permit normal sewage or liquid wastes
to discharge into the disposal terminal by gravity.
LIMIT CONTROL: A device responsive to changes in pressure or temr
perature or liquid level for turning on, shutting off , or throttling
the gas supply to an appliance.
LIQUID WASTE: Liquid waste is the discharge from any fixture, ap-
pliance, or appurtenance, in connection with a plumbing system
which does not receive fecal matter, .
LISTED: The word "Listed" as used herein when not otherwise clarif-
ied means acceptable as outlined in Paragraph 24. 5 . 1 .
LOAD FACTOR: Load factor is the percentage of the total connected
fixture unit flow rate which is likely to occur at any point in the
-I drainage system. It varies with the type of occupancy , the total
flow unit above this point being considered , and with the probabil-
ity factor of simultaneous use.
LOOP VENT: A loop vent is the same as a circuit vent except that
it loops back and connects with a stack vent instead of a' vent
stack.
LUBRICATED PLUG TYPE VALVE: A valve of the plug and barrel type
_ provided with means for maintaining a lubricant between the bear-
ing surfaces .
MAIN: The main of any system of continuous piping is the principal
artery of the system, to which branches may be connected.
MAIN BURNER: A device or group of devices essentially forming an
integral unit for the final conveyance of gas or a mixture of gas.
and air to the combustion zone; and on which combustion takes place
to accomplish the function for which the appliance is designed.
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MAIN BURNER CONTROL VALVE: A valve which controls the gas supply
to the main burner manifold.
MAIN SEWER: See Public Sewer.
MAIN VENT: The main vent is the principal artery of the venting
system, to which vent branches may be connected,
MANIFOLD: The conduit of an appliance which supplies gas to the
individual burners ,
MANUAL GAS VALVE: A valve (or cock) of the plug and barrel type
designed for use with gas , operated manually to control or shut off
the supply of gas .
MAY: The word "May" is a permissive term.
METER: The instrument installed to measure the volume of gas de-
livered through it .
OFFSET: An offset in a line of piping is a combination of elbows
or bends which brings one section of the pipe out of line but into.
a line parallel with the other section.
OUTLET: A threaded connection or bolted flange in a pipe system
to which a gas burning appliance is or may be attached. Outlets
must be located in the room or space where the appliance is or may
be installed,
PERSON: Person is a natural person, his heirs , executors , adminis-
trators or assigns ; and includes a firm, partnership or corporation,
its or their successors or assigns . Singular includes plural ;
male includes female. r
PILOT: A small flame which is utilized to ignite the gas at the
main burner or burners .
PITCH: See Grade.
PLUMBER.. - APPRENTICE: A "Plumber ' s Apprentice" within the meaning
of this Code is any person other than a master plumber or journey-
man plumber, who, as his principal occupation, is engaged in learn-
ing and assisting a licensed plumber in the installation of plumbing.
PLUMBER - JOURNEYMAN: A "Journeyman Plumber" within the meaning of
this Code is any person other than a master plumber who engages in
or works at the actual installation, alteration, repair and renovat-
ing of plumbing, and who is licensed by the Texas State Board of
Plumbing Examiners as provided by the Plumbing License Law of, 1947 .`
PLUMBER - MASTER: A "Master Plumber" within the meaning of this
Code is a plumber having a regular place of business , who , by him-
self , or through a person or persons in his employ , performs plumb- '
ing work, and who is licensed by the Texas State Board of Plumbing
Examiners as provided by the Plumbing License Law of 1947 .
PLUMBING: "Plumbing" as used in this Code means and shall include:
(1) All piping, fixtures , appurtenances and appliances for a supply
of water or gas , or both, for all personal or domestic purposes in
and about buildings where a person or persons live, work or assemble;
all piping,. fixtures , appurtenances and appliances outside a build-
ing connecting the building with the source of water or gas supply ,
or both, on the premises , or the main in the street , alley or at the
curb; all piping, fixtures , appurtenances , appliances , drain or
waste pipes carrying waste or sewage from or within a building to
the sewer service lateral at the curb or in the street or alley or
other disposal terminal holding private or domestic sewage; (2) The
installation, repair and maintenance of all piping, fixtures , ap-
purtenances and appliances in and about buildings where a person
or persons live , work or assemble , for a supply of gas , water, or
both, or disposal of waste water or sewage .
PLUMBING FIXTURES : Plumbing fixtures are installed receptacles ,
devices , or appliances which are supplied with water or which re-
ceive or discharge liquids or liquid-borne wastes , with or without
discharge into the drainage system with Which they may be directly
or indirectly connected.
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PLUMBING INSPECTOR: The "Plumbing Inspector" within the meaning of
this Code is any person employed by the 'city for the purpose of in-
specting plumbing work and installations in connection with health
and safety laws as provided by this Code, and who is licensed by the
Texas State Board of Plumbing Examiners in accordance with the Plumb-
ing License Law of 1947 .
POOL: A pool is a water receptacle used for swimming or as a plunge
or other bath, designed to accommodate more than one bather at a time.
POTABLE WATER: Potable water is water which is satisfactory for
drinking, culinary, and domestic purposes , and meets the require- j
ments of the Health Authority having jurisdiction.
PRIMARY AIR: The air intr:o.d.uce,d into a burner and which mixes with
the gas before it reaches the port or ports .
PUBLIC SEWER: A public sewer is a common sewer directly controlled
by public authority.
REGULATOR - GAS PRESSURE: A device for controlling and maintaining
a uniform gas supply pressure.
RELIEF DEVICE: A safety device designed to forestall the develop-
ment of a dangerous condition in the medium being heated , by reliev-
ing either pressure temperature, or vacuum build-up in the appliance.
A . Pressure Relief Valve: An automatic device which opens or
closes a relief vent, depending on whether the pressure is
above or below a predetermined value.
B. Temperature Relief Valve:
1 . Fusible Plug Type. A device which opens and keeps open
a relief vent by the melting or softening of a fusible
plug or cartridge at a predetermined temperature.
2 . Reseating or Self-Closing Type. An automatic device
which opens and closes a ' relief vent , depending on
whether the temperature is above or below a predeter- I
mined value.
C. Vacuum Relief Valve: An automatic device which opens or
closes a relief vent depending ,on whether the vacuum is above
or below a predetermined value.
RELIEF OPENING: The opening provided in a draft hood to permit the
ready escape to. the atmosphere of the flue products from the draft,
hood in the event of no draft , back draft , or stoppage beyond the
draft hood, and to permit air into the draft hood in the event of a
strong chimney updraft.
RELIEF VENT: A relief vent is a vent the primary function of which
is to provide circulation of air between drainage and vent systems .
RETURN OFFSET: A return offset is a double offset installed so as
to return the pipe to its original alignment .
REVENT PIPE: A revent pipe (sometimes called an individual vent) is
that part of a vent pipe line which connects directly with an indi-
vidual waste or group of wastes , underneath or back of the fixture;,
and extends either to the main or branch vent pipe.
RIM: A rim is an unobstructed open edge of a fixture.
RISER: A riser is a water-supply pipe which extends vertically one
full story or more to convey water to branches or fixtures .
ROOM OR SPACE HEATER: A self-contained gas -burning appliance in-
stalled in and for heating rooms . This definition shall not include
unit heaters , central heating gas appliances , garage heaters , nor
vented recessed heaters . -
ROUGHING-IN: Roughing-in is the installation of all parts of the
plumbing system which can be completed prior to the installation of
I fixtures . This includes drainage, water-supply, gas supply and/vent
piping, and the necessary fixture supports .
_ I
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SAFETY SHUT OFF VALVE: An .automatic gas control valve of the on"
and off type which is actuated by the limit or protective controls
or similar emergency devices .
SAND INTERCEPTOR: See Inteceptor .
SANITARY SEWER: A sanitary sewer is a pipe which carries sewage
and excludes storm, surface, and ground water.
SECOND HAND: Second hand, as applied to material or plumbing equip-
ment, is that which has been used.
SECONDARY AIR: The air externally supplied to the flame at the
point of combustion.
SEMI-RIGID TUBING: A gas conduit having semi-flexible metal wall
structure.
SEPARATOR: See Interceptor .
SEPTIC TANK: A septic tank is a watertight receptacle which re-
ceives the discharge of a drainage system or part thereof , and is
designed and constructed so as to separate solids from the liquid,
digest organic matter through a period of detention, and allow the
liquids to discharge into the soil outside of the tank through a
system of open-joint or perforated piping, or disposal pit.
SERVICE PIPE: The pipe which brings the gas from the gas main to
the point of delivery.
"SEWAGE: Sewage is any liquid waste containing animal or vegetable
matter in suspension or solution, and may include liquids contain-
ing chemicals in solution.
SHALL: The word "Shall" is a mandatory term.
SHUT OFF VALVE: See definition of Manual Gas Valve.
SIDE VENT: A side vent is a vent connecting to the drain pipe -
through a fitting at an angle not greater than 45 degrees to the
vertical .
SLOPE: See Grade. %
SOIL PIPE: A soil pipe is any pipe which conveys the discharge of
water closets or fixtures having similar functions , with or with-
out the discharge from other fixtures , to the building drain or
building sewer.
SOIL VENT: - See Stack Vent .
SPECIFIC GRAVITY: As applied to gas , specific gravity is the ratio
of the weight of a given volume to that of the same volume of air,
both measured under the same conditions ,
STACK: A stack is the vertical main of a system of soil , waste ,
or vent piping.
STACK GROUP: Stack group is a term applied to the location of `
fixtures in relation to the stack so that by means of proper fit-
tings , vents may be reduced to a minimum.
STACK VENT: A stack vent (sometimes called a waste vent or soil
vent) is the extension of a soil or waste stack above the highest
horizontal drain connected to the stack.
STACK VENTING: Stack venting is a method of venting a fixture or
fixtures through the soil. or waste stack.
STOP COCK: See definition of Manual Gas Valve.
SUMP: A sump is a tank or pit which receives sewage or liquid
waste, located below the normal grade of the gravity system and
which must be emptied by mechanical means .
SUPPORTS : Supports , hangers , and anchors are devices for support-
ing and securing pipe and fixtures to walls , ceilings , floors , or
structural members .
THERMOSTAT: An automatic device actuated by temperature changes ,
designed to control the gas supply to a burner, or burners , in
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order to maintain temperatures between predetermined limits .
TRAP: A trap is a fitting or device so designed and constructed as
to provide, when properly vented, a liquid seal which will prevent
the back passage of air without materially affecting the flow of
sewage or waste through it .
TRAP SEAL: The trap seal is the maximum vertical depth of liquid
that a trap will retain, measured between. the crown weir and the
top of the dip of the trap.
UNIT HEATER: A self-contained gas burning appliance of the fan I
type, designed for the delivery of warm air directly into the
space in which the appliance is located.
UNIT VENT: See Common Vent .
VACUUM BREAKER: Au automatic device which prevents back siphonag'e
by admitting air to relieve a partial vacuum in a water supply pipe.
VALVE: See definition of Manual Gas Valve. 4
VENT: (Formerly Flue or Vent) A passageway , vertical or nearly '
so , such as a chimney or gas vent, for exhausting vent gases to
the outer air.
VENT CONNECTOR: (Formerly Flue or Vent Connector) That portion of
the vent system which connects the gas appliance to the gas vent or
chimney. .
VENT GASES: (Formerly Flue Gases) Products of combustion from gas
appliances plus excess air, plus dilution air in the vent connector ,
gas vent or chimney above the draft hood or draft regulator.
VENT PIPE: See Vent System.
VENT STACK: A vent stack is a vertical vent pipe installed pri-
marily for the purpose of providing circulation of air to and from
any part of the drainage system,
VENT SYSTEM - GAS PLUMBING: The gas vent or chimney and vent con-
nector, if used, assembled to form a continuous open passageway
from the gas appliance to the outside atmosphere for the purpose
ii of exhausting vent gases .
-= VENT SYSTEM - SANITARY PLUMBING: A vent system is a pipe or pipes
installed to provide a flow of air to or from a drainage system or
to provide a circulation of air within such system to protect
trap seals from siphonage and back pressure.
_ VENTED RECESSED HEATER: A self-contained vented appliance complete
with grilles or equivalent, designed for incorporation in or perma-
nent attachment to a wall , floor, ceiling or partition, and furnish-
ing heated air circulated by gravity or by a fan directly into the
space to be heated through openings in the casing . Such appliances
shall not be provided with duct extensions beyond the vertical and
horizontal limits of the casing proper, except that boots not to
exceed 10 inches beyond the horizontal limits of the casing for
extension through walls of nominal thickness may be permitted.
Where such boots are provided they shall be supplied by the manu-
facturer as an integral part of the appliance and tested as such;.
This definition shall exclude floor furnaces , unit heaters and
central furnaces as herein defined.
I
VERTICAL PIPE: A vertical pipe is any pipe or fitting which is
installed in a vertical position or which makes an angle of not
more than445 degrees with the vertical .
WALL HEATER, UNVENTED OPEN-FLAME RADIANT TYPE: A room heater off
the open front type, designed for insertion in or attachment to 1
a wall or partition having fully exposed flames the heat from `
which is reflected by ceramic radiants or a metal , asbestos , clay
back or equivalent backwall reflecting surface. It incorporates
no concealed venting arrangements in its construction and dis-
charges all products of combu'stion, through the open front into the
room being heated.
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I /
WASTIE: ' S'ee Liquid Waste and Industrial Wastes .
WASTE PIPE: A waste pipe is a pipe which conveys only liquid
waste, free of fecal matter.
WATER-DISTRIBUTING PIPE: A water-distributing pipe in a .building
or premises is a pipe which conveys water from the water-service
pipe to the plumbing fixtures and other water outlets .
WATER MAIN: The water (street) main is a water:supply pipe for
public or community use.
WATER OUTLET: A water outlet , as used in connection with the
water-distributing system, is the discharge opening for the water
(1) to a fixture; (2) to atmospheric pressure (except into an
open tank which is part of the water-supply system) ; (3) to a
boiler or heating system; (4) to any water-operated device or -
equipment requiring water to operate , but not a part of the
plumbing system.
WATER RISER PIPE: See Riser.
WATER-SERVICE PIPE: The water-service pipe is the pipe from the
water main or other source of water supply to .the building served.
WATER-SUPPLY SYSTEM: The water-supply system of a building or i
premises consists of the water-service pipe , the water-distributing
pipes , and the necessary connecting pipes , fittings, control val-
ves , and all appurtenances in or adjacent to the building or
premises .
WET VENT: A wet vent ddEs :a vent which also serves as a waste.. _
YARD LINE - GAS PLUMBING: The section of consumer' s piping and
fittings extending from the point of delivery to the house pip-
ing.
YOKE VENT: A yoke vent . is a pipe connecting upward from a soil
or waste stack to a vent stack for the purpose of preventing
pressure changes in the stacks .
CHAPTER S
LICENSING REQUIREMENT
5 . 1 PLUMBING LICENSE REQUIRED.
5 . 1 . 1 All persons who engage in or work at the actual in-
stallation, alteration, repair and renovating of plumbing shall
possess either a master or journeyman plumber ' s license in ac-
cordance., with the provisions of the Plumbing License Law of 1947 .
CHAPTER 6
EXEMPTED ACTIVITY
6. 1 EXEMPTIONS: The following acts , work and conduct shall be
expressly permitted without license: ._
6 . 1 . 1 Home Owner: Plumbing work done by a property owner
in a building owned or occupied by him, as his home.
6. 1 . 2 Maintenance; Utility and Appliance Work: Plumbing
work done by anyone who is regularly employed as or acting as a
maintenance man or maintenance engineer, incidental to and in - ,
connection with the business in which_ he is employed or engaged
and who does not engage in the occupation of a plumber for the
general public; construction, installation and maintenance work
done upon' the premises or equipment of a railroad by an' employee
thereof who ' does not engage in the occupation of a plumber for
the general .public; and plumbing work 'done by persons engaged by
any public service company in the laying, maintenance and operation
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of its service mains or lines and the installation, alteration,
adjustment , repair, removal and renovation of all types of appur
tenances , equipment and appliances ; appliance installation and
service work done by anyone who is an appliance dealer or is em- '
ployed by an appliance dealer, and acting as an appliance instal=
lation man or appliance service man in connecting appliances to. ,
existing piping installations . PROVIDED, HOWEVER, THAT ALL WORK '
AND SERVICE HEREIN 'NA*ED OR REFERRED TO SHALL BE SUBJECT TO IN-
SPECTION AND APPROVAL IN ACCORDANCE WITH THE TERMS OF ALL LOCAL
VALID CITY OR MUNICIPAL ORDINANCES .
CHAPTER 7
ADMINISTRATION
7 . 1 PLUMBING INSPECTORS : The office of Plumbing Inspector is
hereby created to administer and enforce this code. The Mayor 1
shall appoint the Plumbing Inspector and any assistants necessary
to aid him in the discharge of his duties . Such appointment shall
be subject to confirmation by the City Council , The person chosL
en to fill this office shall be of good moral character; shall be
possessed of such executive ability, training and experience as is
required for the performance of his duties in the enforcement of
this code. He shall receive such compensation and serve for such
term as may be fixed by the governing body; and execute and de-
liver to the city a surety bond in the principal amount of $1 , 000 . 00
conditioned upon the diligent and honest performance of the dut-I
ies required by this code, or any other ordinance or law. The
bond premium shall be paid by the city and the bond shall be
satisfactory to the governing body. He shall hold and keep in
force a Plumbing Inspector' s License issued by the State Board '
of Plumbing Examiners .
7 . 2 PROHIBITED INTERESTS : The Plumbing Inspector shall not work
for or be connected or associated with any master plumber, plumb
ing manufacturer or wholesale plumbing and supply company or do
any plumbing work while employed as a Plumbing Inspector.
7 , 3 DUTIES OF INSPECTOR: The duties of the Plumbing Inspector
or assistant plumbing inspector shall be to receive, approve
and countersign, either in person or by an authorized -represen-
tative , all applications and collect all fees for permits to do
plumbing, or make sewer connections in the city, or outside the
boundaries of the city , if connections are made to either the
city water or sewer systems ; also to personally inspect and pass
on all plumbing work, and sewer connections now in use or being
constructed, or which may hereafter be constructed in the city,
or outside the boundaries of the city, if connections are made to
either the city Water or sewer systems , and to issue his certi-
ficate of approval thereof , if he shall approve the same, or,
if he shall not approve the same, to direct , by written order,
the owner or agent in charge of any building or premises , where j
imperfect plumbing, including water, sewer or gas piping, may
be located, or the plumber in charge of such construction to stop
the use or construction of same until it shall have been properly
repaired or constructed in accordance with the provisions of thi's
code; to investigate all alleged violations of the plumbing ordil-
nances ; to file complaints against all persons whom he may have ,
reason to believe have violated any - of the plumbing or sewer
ordinances of the city. Assistant inspectors of plumbing shall
perform all of the duties and hage all of the powers of the
Plumbing Inspector,
_- 7 . 4 POWERS OF INSPECTOR: The Plumbing Inspector shall have the
power and it shall be his duty , where any building, premises or
construction contains improper or defective plumbing or where
same has been constructed, erected, altered or repaired without
a permit as provided by this code, to give prompt written notifi-
cation to the utility involved to cuti;.off the water or gas supply
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thereto until such improper or defective plumbing shall be made to
comply fully with the provisions of this code, and a certificate to
the Plumbing Inspector shall have been issued.
7 . 5 LIABILITY OF INSPECTOR: Where action is taken by the Plumbing
Inspector to enforce the provisions of this code, such action shall
be in the name of , and on behalf of , the city , and the Inspector in -
so acting shall not render himself personally liable for any damage
which may accrue to persons or property as a result of an action
committed in good faith in the discharge of his duties , and any suit _
brought against any inspector by reason thereof shall be defended
by the City Attorney until final determination of the proceedings
contained therein.
7 . 6 AUTHORITY OF INSPECTOR: The Plumbing Inspector shall have the
right to enter any building or premises at any reasonable time in
the discharge of his official duties , or for the purpose of making
any inspection, re-inspection, or test required by this code.
CHAPTER 8
PLUMBING APPEALS AND ADVISORY BOARD
8 . 1 ORGANIZATION OF BOARD: There is hereby created a six member
Plumbing-,Appeals and Advisory Board consisting of:
(1) A licensed Master Plumber _
(2) A licensed Journeyman Plumber
(3) A building contractor
(4) The City Engineer
(5) The City Health Officer
(6) A licensed architect or alternate selection (See Paragraph
8 . 1 . 3)
8 :1 . 1 Ex-officio Member: The Plumbing Inspector shall be an
ex-officio, non-voting member of said Board.
8 . 1 . 2 Appointment and Terms of Office: Members of the Board
and their successors shall be appointed by the Mayor and confirmed '
by the City Council and shall hold office for terms of 4 years , or
until their successors are appointed and have qualified'; except , the
members of the Board first appointed shall hold office, two for two
years and two for four years as determined by the Mayor in making
said appointments .
8. 1 . 3 Alternate Selection: If a licensed architect or regis -
tered engineer is not available, the Mayor may appoint such other
lay person as he deems qualified to serve as a representative of the
general public .
8 . 1 . 4 Eligibility to Serve: The City Engineer and the. City
Health Officer shall be eligible to serve only so long as they hold .
office. -
8. 1 . 5 Compensation: All members shall serve without compen-
sation.
8 . 2 ELECTION OF OFFICERS AND ADOPTION OF RULES : The members of
the Board shall meet as soon after their appointment as practicable
for the purpose of organization. The Board shall formally elect a
chairman, a vice chairman, and a secretary from its members and may adopt such rules as it deems necessary for the orderly conduct
of its affairs . A full and complete record of the proceedings of
said Board shall be kept . A majority of the Board' shall constitute _
a quorum for the transaction of business .
8. 3 DUTIES AND POWERS OF THE BOARD
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8 . 3. 1 Right of Appeal: Any person, firm or corporation ag-
grieved by any interpretation of this code or by any decision or
ruling by the Plumbing Inspector under this code shall have the
right to make an appeal to the Plumbing Appeals and Advisory Board.
8 . 3. 2 Hearings by the Board: Within a period of ten (10) days
from the filing of the appeal the Board shall hear the appeal toL
gether with the testimony of all parties concerned, and render' a
l
decision thereon within three (3) days thereafter. In hearing such
an appeal , the Board shall not have the power to waive or set aside
the requirements of this code but shall have the power to interpret
its provisions and in case of alternate types of construction or
material , shall determine whether or not such alternate type of
construction or material is in fact equal to the standards of this
code , considering adequacy., stability, strength, sanitation and
safety to the public health and welfare. Any person, firm or co'r'
poration who may be aggrieved by the decision of the Board shall
have a right of appeal to the City Council within ten (10) days
from the rendition of such decision. Said appeal shall be perfect-
ed by written notice addressed to the Mayor and City Council asking
for a hearing by the Council , and the action of the City Council
thereon shall be final .
8. 3. 3 Advisory Responsibility of the Board: The Board shalll
submit to the City Council such recommendations for the improvement
and revision of this Code as it may from time to time deem necessary
and proper in light of the development of new materials , methods or
techniques which would result in a better and more economical in-,
stallation. All requests for use of materials or methods not covier-
ed in this Code shall be fully supported by factual evidence, or
prior approval , from a recognized testing agency or such impartial
qualified authority acceptable to the Board.
CHAPTER 9
PERMITS , FEES AND INSPECTIONS
9 . 1 PERMITS
9. 1 . 1 Permits Required:
A . It shall be unlawful to construct, install or cause
to be installed any plumbing as defined herein with-
out first securing a plumbing permit therefor except
as otherwise provided in Section 9. 1 . 2.
B. It shall be unlawful for any person to make any, ex-
tension to any lines or pipes , using water from city
water mains ,-whether within or without the :corporate
limits of the city, or to add any pipes or to change
any pipes or lines from a water line, apartment , '
house, premises , or meter without first securing , a
permit for such changes except as otherwise provid-
ed in Section 9. 1 . 2 .
C. Permits shall be required for the replacement of
water heaters .
9 . 1 . 2. Permits Not Required: No plumbing permit is required
to do minor repairs such as the maintenance, repair or replacement
in kind of the following:
(1) Yard hydrants and sill cocks
(2) Flush valves and float-balls in water closet tanks
(3) Accessible traps on lavatories or sinks
(4) Replacing of plumbing fixtures where no change in " rough-
ing-in" is involved except replacement of water heaters .
(See Paragraph 9. 1 . 1 - C. )
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The above examples are representative only and should not be
considered as a limitation on the term "minor repairs .
9 . 1 . 3 Issuance of Permit: The Plumbing Inspector or his de-
signated representative shall issue all plumbing permits in accor-
dance with the provisions and requirements of this code. All ap-
plications for permits shall give the correct location of the build- _
ing, name of the owner of such building, and a complete statement
of the work and fixtures to be installed. The Plumbing Inspector
may require a complete plan of the work to be performed if consid-
ered necessary.
9. 1 . 4 Special Permits Authorized: A special permit may be
issued by the Plumbing Inspector, in writing, when plumbing cannot
be installed in accordance with all of the provisions of this code,
if in his judgment the conditions require it . Application for this
type permit shall be made in writing accompanied by a sketch show-
ing the work to be done; said sketch must be kept on file in the
Plumbing Inspector ' s office. In other work pertaining to , but not
specifically covered by this code, the Plumbing Inspector may pre-
scribe such specifications as may be necessary and shall be consult-
ed before any work is started.
9. 1 . 5 Persons Who May Obtain A Permit: Permits shall be is -
sued only to the following:
(1) Any Master Plumber licensed by the State Board of Plumb-
ing Examiners .
(2) Any property owner for plumbing work to be done by him
in-'-a building owned •or .occupied !by7_him'_as :.hi"sC.home.
(3) Any appliance dealer or employee of an appliance dealer
who is acting as an appliance installation man or 'appli-
ance service man in connecting appliances to existing
piping installations .
9 . 1 . 6 Permits Not Transferable: Each permit issued under this code shall be personal to the Permittee. No such permit shall
be assigned or transferred to another person and no person shall
permit another person to obtain a permit in his name, or permit
any plumbing or gas fitting work to be performed under his permit
by any person other than a person authorized to do the same.
9. 1 .7 False Statement or Bad Faith: Any person who shall
wilfully make any false statement in order to obtain a permit shall
be guilty of a misdemeanor and subject to the penalty provided
herein. Bad faith or unreasonable delay in the performance of
plumbing work shall be deemed a sufficient reason for subjecting
the plumber so offending to a suspension of the permit and no
further permit shall be issued until such act of bad faith or un-
reasonable delay has been corrected.
9. 1 . 8 Duration of Permit: Every permit issued under the pro-
visions of this code shall expire 90 days after the date thereof
unless the work authorized by such permit shall have been commenc-
ed within such time; and every permit shall expire if the work
authorized by such permit is suspended or abandoned for as long as
90 days after it has been commenced. In every case where a permit
is permitted to expire, a new permit shall be obtained before any -
work is resumed .
9 . 2 FEES
9. 2. 1 Permit and Inspection Fees: The. permit and inspection -
fees herein provided shall be paid to the City before the issuance
of a permit and before any work is started. The fees shall be as
follows :
9. 2. 2 Table of Fees:
l
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For issuing each permit. . $1 .00
In addition:
For each plumbing fixture or trap or set of
fixtures of one trap (including water and
drainage piping) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1 . 00
For each house sewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1 , 00
For each house sewer having to be replaced or
repaired. . . . . . . . . . . . . . . . $1 . 00
For each water heater and/or vent. . . . . . . . . . . . . . . . . . . . . . . . . $1 . 00
For each gas piping system of 1 to 5 outlets . . . . . . . . . . . . . . $2. 00
For each gas piping system of 6 or more, per outlet. . . . . . , $ ' , 50
For installation of water piping for water
treating equipment. . . . . . . . . . . . . . . . . . . . . . ° . . . . . . . . . $1 . 00
Lawn sprinkler system inspection for five (5)
sprinkler heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1 . 00
Each additional sprinkler head over five, fifteen
cents ( . 15) each. . . . . . . . . . . . . . $ 1 . 15
For re-inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $2. 00
i
9. 3 INSPECTIONS AND TESTS
9, 3. 1 When Required: All new plumbing work, and such portions
of existing systems as may be affected by new work or any changes ,
shall be inspected to insure compliancewith all the requirements ,
of this Ordinance. It shall be the duty of the plumber to give
reasonable advance notice to the Plumbing Inspection Department when
plumbing work is ready for inspection.
i
If the Inspector finds the installation does not meet with the
requirements of the Code, the plumber shall make the necessary cor-
rections and the work shall then be re-submitted for inspection.
All materials and labor necessary for tests shall be furnished
by the plumber.
9. 3. 2 Drainage and Vent System Tests : All the piping of nel
installations , and of major additions , or renovations of existing
systems , shall be tested with air or water. The water test shall! be
applied to the drainage system either in its entirety or in sections .
All openings in the portion under test shall be tightly plugged ex-
cept the highest opening and the system filled with water to point
of overflow. No joint or pipe in the system (to a point at least,
level with the top floor) shall be submitted to less than a 42-
inch head of water .
The water shall be kept in the system, or portion of, the sys.-
tem under test , for a period of at least 15 minutes before inspect-
ion and shall then be tight at all points .
i
9. 3. 3 Water Supply System Test: Upon completion of the wader
system, or section thereof , it shall be tested and proved tight under
a water test at least as great as city water pressur-. Water for;
testing must be from a potable supply. Pressure must be on systems
for at least 15 minutes prior to inspection. Caulking or use of !
any patching material is strictly prohibited. All faulty pipe and
materials shall be replaced with good materials .
9. 3. 4 Building Sewer Test: All building sewers shall be in
spected and approved prior to backfill . Building sewers in the
same trench with water pipe shall be tested with a 10-foot head of
water and proved tight. The Plumbing Inspector may call for a
like test on any building sewer when, in his judgment , it is ad-
visable in order to insure safe sanitary conditions ,
9. 3. 5 Gas System Test: The test on house piping shall be
made by closing all openings and subjecting the pipes to an air
pressure that will support a column of mercury 15 inches in height .
If this column of mercury is supported by the air pressure for at
least 15 ' minutes , during periods of constant temperature, the pip-
ing shall be considered tight .
i
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9 . 3. 6 Prohibited Methods of Testing: Water shall not be used
in testing gas piping for leaks and piping into which water has been _
introduced will not be approved , but will be condemned as faulty. A
fire test is not permitted under any circumstances on inside work. -
9 . 3.7 Gas System Inspection: When the plumber has completed
the gas piping system and has all branches and branch extensions
firmly and permanently fastened , he shall test the piping and if
found tight , shall make application for inspection and the Plumbing
Inspector will call and inspect the piping and witness the test , and
if he finds the piping tight , and the sizes and work in accordance
with the provisions of this Code, he will issue a certificate of in-
spection and attach an inspection tag to the work.
9 . 3. 8' Final Inspections :
a. Final inspection shall be made on the sanitary system _
and the water system after the fixtures are set and
the building is ready for occupancy.
b.. Final inspection shall be made on the gas system
after the water heater, furnace and gas cocks have
been installed and shall be made with air pressure
of 10 inches of mercury for 15 minutes . When changes
of extensions are made to a gas system from a point
where no gas stop has been provided in the original
gas system, the plumber must prepare the entire sys -
tem for test and same with air pressure of 10 inches
of mercury . Test must be on system for a minimum of
15 minutes before inspection.
9. 3. 9 Covering Plumbing: No part of the plumbing system shall
be covered before it has been tested , inspected and approved as pre-
scribed in this Section. If any part is covered prior to the provi-
sions of this Section, it shall be exposed upon the direction of the
Plumbing* Inspector .
CHAPTER 10
BONDING PROVISION
10 , 1 BOND REQUIRED: Before any person, firm or corporation shall
engage in the business of plumbing in the City , he, it , or they
shall first obtain the proper license and deposit with the City a
good and sufficient bond in the sum of One Thousand ($1 , 000 .00)
Dollars , conditioned that the person, firm or corporation engaged
in the plumbing business will faithfully observe all the laws per-
taining to plumbing; further, that the City shall be indemnified
and saved harmless from all claims arising from accidents and damage - �
of any character whatsoever caused by the negligence of such person,
firm or corporation engaged in the plumbing business , or by any
other unfaithful inadequate work done either by themselves or their
agents or employees . .
CHAPTER 11
GENERAL REGULATIONS _
11 , 1 CONFORMANCE WITH CODE: All plumbing systems hereafter instal-
led sha11 conform with the provisions of this code.
11 . 1 , 1 Sewer Required: Every building in which plumbing fix-
tures as installed shall have a connection to a public or private
sewer,
Exception: When there is no sewer available within
200 feet , an approved private sewage disposal system may be used,
11 . 1 . 2 Independent Systems:- The drainage system of each new
-18-
building and of new work installed in existing buildings shall be
separate and independent from 'that- of any other building and when
available shall have an independent connection with a public sewer.
Exception: When one building stands in the rear of
another building, on an interior lot and these buildings are on one
parcel of land under one owner, then the building sewer may be ex-
tended to serve the rear building.
I
11 . 1 . 3 Easement Provision: A house sewer may not cross another
lot unless - an easement or right-of-way is provided to protect all
property owners .
11 , 2 FITTINGS AND CONNECTIONS
11 . 2. 1 Fittings for Change in Direction: Changes in direction
in drainage piping shall be made by the appropriate use of 45-degree
wyes or 1/2 ayes , long or short sweep quarter bends , sixth, eighth,,
or sixteenth bends , or by a combination of these or equivalent
fittings . Single and double sanitary tees and quarter bends may
be used in drainage lines only where the direction of flow is from
the horizontal to the vertical .
11 . 2. 2 Change of Direction Table: The fittings in Figure 1
are used for changing direction as follows:
I
Diameter of Pipe Direction Install
Drainage - any size Horizontal Quarter bend or 90
to Vertical degree short turn
Vent - any size Any direction
3 inch or more Vertical to Short sweep or 90
Horizontal degree long turn
drainage elbow
3 inch or less Vertical to Long sweep or extra
Horizontal long turn elbow
CAST IRON SOIL FITTINGS CAST IRON DRAINAGE FITTINGS
I
V1111ndon Give; Short Sweep Long-1
ong Swag Short+Lwn LoeyTurn lstT Long
From honsaetal 3' end over; last It
to vertical only verfieal+o horaortal vortiea taho'hontat
Figure 1
I
I
I
11 . 3 PROHIBITED FITTINGS AND CONNECTIONS
11 . 3. 1 Fittings: No fitting having a hub in the direction
opposite to flow, or tee branch shall be used as a drainage fittiig.
No running threads , bands , or saddles shall be used in the drainage
system. No drainage or vent piping shall be drilled or drilled and
tapped.
11 . 3. 2 Heel or Side-Inlet Bend: A heel inlet quarter bend
shall not be used as a vent when the inlet is placed in a horizon
tal position.
11 . 3. 3 Obstruction to Flow: No fitting or connection which
offers abnormal obstruction to flow shall be permitted.
11 . 4 EXISTING BUILDINGS
-19-
11 . 4 . 1 Provision For Code Deviations : In existing buildings
or 'premises in which plumbing installations are to be altered, re-
paired, or renovated, necessary deviations from the provisions of this
code may be permitted, provided such deviations conform to the intent
of the code and are approved by the Plumbing Inspector.
11 . 5 SEWER AND WATER PIPES
11 . 5 . 1 Separate Sewer Ditch: Water-service pipes , or any under-
ground water pipes , shall not be run or laid in the same trench as
the building sewer or drainage piping, except as provided for in
Paragraph 19. 4. 11 and Paragraph 20 . 2. 2 .
11 . 5 . 1A Protection of Pipes :
A. Breakage and Corrosion: Pipes passing through or under
walls shall be protected from breakage. Pipes passing through cin-
ders or concrete shall be protected from external cor:rbsiion by pro-
tective coating or wrapping.
B. All drainage pipe passing through foundation walls shall
be provided with a sleeve at least two pipe sizes greater than the
pipe passing through. Annular space between sleeves and pipes
shall be filled with coal tar, asphaltum compound or other material
equally effective and approved by the Plumbing Inspector.
C. All drainage pipes and/or building sewers passing under
concrete or driveways shall be cast iron soil pipe with caulked or
approved mechanical joints .
11 . 5 . 2 Damage to Drainage System or Public Sewer: It shall
be unlawful for any person to deposit by any means into the build-
ing drainage system or sewer any ashes ; cinders , rags ; inflammable,
poisonous , or explosive liquids ; gases ; oils , grease; or any other
material which would or could obstruct , damage, or overload such
system or sewer.
11 . 6 WATER CLOSET CONNECTIONS
11 . 6 . 1 Lead: Three-inch extra heavy lead bends and stubs may
be used on water closets or similar connections , provided the inlet
is dressed or expanded to receive a 4-inch floor flange.
11 . 6 . 2 Rigid: Wall outlet water closets may have rigid con-
nections of approved manufacture .
11 . 6 . 3 Reducing: Four-by three-inch extra heavy lead or ap-
proved copper reducing bends are permitted .
11 . 7 RAT PROOFING: Where this term is used, it shall also mean
mouse proofing.
11 . 7 . 1 Exterior Openings : All exterior openings provided for
the passage of piping shall be properly sealed with snugly fitting
collars of metal or other approved rat-proof material securely fas-
tened into place.
11 . 7 . 2 Interior, Openings : Excess space around pipe openings
through walls , floors , or ceilings shall be chinked or closed by
the use of ordinary masonry mortar when and where possible . Where
this is not practical , the Plumbing Inspector shall prescribe an
alternate method and material ..
CHAPTER 12
MATERIALS - QUALITY AND WEIGHT
12. 1 MATERIALS
-20-
12. 1 . 1 Minimum Standards: The materials listed in this Chap-
ter shall conform at least to the standards cited in pages 22, 23,
and 24 when used in the construction, installation, alteration, or
repair of any part of a plumbing and drainage system, , except that
the Inspector shall allow the extension, addition, or relocation of
existing soil , waste, or vent pipes with materials of like grade or
quality. '
i
12. 1 . 2 Use of Materials: The following Table outlines pier-
miscible materials for various uses subject to the restrictions of
the following chapters .
12. 1 . 3 Materials Not Listed: Materials other than those list-
ed for the various uses may be permitted upon approval of the plumb-
ing Appeals and Advisory Board. The Board shall not approve any
material unless the same is shown to be equal to or better than
materials listed in this Ordinance.
ti2 4 p
D o o'" bQ` op K
° ; O { ey
12. 1 . 4 Materials and Uses: At V °fie oo�m ° 4 co l
Clay ever Pipe With Neoprene
Concrete Sever Pi eic
tum n ze � ever Pi e x x
a estos Cement Pipe x 'x x x
cast-yr-0—nSoll Pi e 6 Fitti s x x x x x x x Ix Ix I
Cast-Iron rea ed Pie X1 x x x x x x
st-Iron Water gi e 6 Fittings I x I
set- ron Screwed Fittings Ix x * x x x I
Cast-Iron Drains a Fittinits x x x x .. -3
Wro ht=lron Pie alvanlz d * x x
S' a P - ** x -x
0 ene"earth Iron Pipe
Ma ab a Iro ad
Malleable Drainage Fittinsts - xx x x
Brass Pi e.I F 6 Screwed Fittings I a x I x x x x x x X x
Copper P Xx x x X RX ' X x x
_. Copper Water Tube (Type R or L, Soft)
S Wrought Copper Fittings x x a X
Soldered Joint Fittings - Copper,
Brass 6 Bronze x x x x x x
_- Cast Brass Flared Type Fittings x x x x
Solder Joint Drainage Pattern
leittings Brass 1
x x x x x x x x x x
Cogger Tube. Type M Hard x x x x x x x I
Conner Tube, Type DWV
x x x x' x I.
Tube.CooRer T L rd. x x x x x x x x x x x x x x I
gouger Tubg. T K d x x x x x x x X
x 'x a x x X 1
Lead Pipe x x x
Steel Pipe Cement Lined
Plastic- Pine (PVC) Z_
x x
P1PSt ens Rubber YS e x �x
x x X
May be used for large size service lines and private distribution systems
(3 inches or larger)
- ** When used for sanitary vents, shall extend up from a point at least 6 inches
I I above the flood level of the highest fixture on the stack.
_21-
12. 1 . 5 Materials Standards
Materials For Plumbing Installations
Nate: To be used only within the limitations of the
applicable standards listed below:
Materials ASA ASTM FS Other Standard Remarks
Non-Metallic Piping (C13-50) SS-P-36la(1942) Standard Strength
Clay Sewer Pipe (C200-50T) Extra Strength
Concrete Sewer Pipe C75-52 Reinforced
for sizes 4" to 24" C14-52 SS-P-371 (1937) Non-Reinforced Type 1
Bituminized Sewer CS-116-44
Pipe and Fittings -
i
N Ferrous Pipe and Fittings " C. 1" - CS-188, 53
Extra Heavy and Service
Weights 2
Cast-Iron Soil Pipe
and Fittings A40 . 1-1935 A74-42 WW-P-401 (1935) 4
Cast-Iron Water Pipe A21 . 2-1953 A44-41 WW-P-421 (1931) AWWA 1908
Cast-Iron (Threaded) Pipe A40 . 15-1943 WW-P-356(1936)
Cast-Iron (Screwed) Fittings B16 . 4-1949 WW-P-50lb(1945)
Cast-Iron Drainage Fittings B16 . 12-1953 WW-P-49la(1945) 6
Wrought-Iron Pipe B.36. 2-.1950 A72-52T WW-P-44lb(1952)
Steel Pipe B36. 10-1939 A120-47 WW-P-406 (1944) Type I and II
Open-Hearth Iron Pipe B36 . 23-1950 A253-51T WW-P-406 (1944) 7 Type III only
Malleable-Iron Fittings B16 . 3-1951
(.150 lbs . )
Non-Ferrous Pipe and Fittings
Brass Tubing B135-52 WW-P-791 (1931)
Brass Pipe H27 . 1-1953 B43-52 WW-P-351 (1930) 9
Brass or Bronze Flanges
& Flanged Fittings B16. 24-1953
(150 & 300
lbs . )
Materials ASA ASTM FS Other Standard Remarks
Cast-Bronze Soldered Joint _
Fittings B16. 18-1963
Cast-Brass Solder Joint
Drainage Fittings B16 . 23-1953 For Copper Water Tube
Bronze Screwed Fittings
125 lb. . B16. 15-1947 WW-P-460 (1945) MSS-SP-10
Copper Pipe H26. 1-1949 B42-52 WW-P-377 (1932) 10
Seamless Copper Tubing - B75-52 WW-T-797 (1932)
Copper Drainage Tube (DWV) - B306-57
Copper Water Tube (KLM) H23, 1-1953 B88-51 WW-T-799a(1943) 11 ,
Wrought Copper and Wrought
Bronze Solder Joint Fittings B16. 22-1963
Flared Fittings for Copper
(Water) Tubes B16 . 26-1958
Lead Pipe & Traps WW-P-325 (1944) CS 95-41 CS
i
N
w Miscellaneous
Calking Lead QQ-L-156 (1934) 12
Type 1
Sheet Lead QQ-L-201 (1953) 13 Grade A
Sheet Brass B36-52 QQ=B-611a(1938)
B121-52
Sheet Copper B152-52 QQ-C-50la(19A1) 14
Galvanized Iron & Steel
Sheets G8 , 8-1937 A163-39 QQ-1-716 (194.2) 15
.Galvanized Pipe & Fittings A9-52T WW-P-406 (1944) Sec . D 6
Coal-Tar Enamel
, (Protective Coating) AWWA 7A . 6-1940
Soft Solder B32-49 QQ-S-571b(1947)
Fixture-Setting Compound HH-C-536 (1936)
Air Gap Standards A40 . 4-1942
Backflow Prevente'r Valves A40 . 6-1943
Bronze Gate WW-V-54 (1946) 16
Cast-Iron Gate WW-V-58 (1945)
Plastic Piping
Plastic Drain, Waste &
Vent Pipe & Fittings
I
Materials ASA ASTM FS Other Standard Remarks
ASS CS=27'p-65 '
PVC CS-272-65 ,
Styrene Rubber Drain &
Sewer Pipe & Fittings CS-5228-61
Sdh.. :'4O PVC Type II Pipe CS-207-60
Sch. 40PVC Type II. Fittings Approved by Nat ' l . Sanitation
Foundation %
Nylon & Brass Inserts Per Manufacturer' s Specs .
N
iA
1
Copies of Standards are available at the following addresses :
ASA - American Standards Association
10 East 40 Street
New York, N. Y. . 10016
ASTM- The American Society for Testing and Material
1916 Race Street
Philadelphia, Pa. 19103
JCS - Commercial Standards
National Bureau of Standards
Washington, D. C. 20234
A'WWA - American Water Works Association
2 Park Avenue
New York, N. Y.
FS - Federal Supply Service
Standards Division - General Service Administration
Washington 25 , D• C.
CHAPTER 13
JOINTS AND CONNECTIONS
13. 1 GENERAL
13. 1 . 1 Tightness : Joints and connections in the plumbing sys-
tem shall be gastight and watertight for the pressures required by,
test , with the exception of those portions of perforated or open-
joint piping which are installed for the purpose of collecting and
conveying ground or seepage water to the underground storm drains .
13. 2 TYPES OF JOINTS
13. 2. 1 Calked Joints: Calked joints for cast-iron bell-and-
spigot soil pipe shall be firmly packed with oakum or hemp and filled
with molten lead not less than 1 inch deep and not to extend more
than 1/8 inch below the rim of the hub. No paint , varnish, or other
coatings shall be permitted on the jointing material until after the
joint has been tested and approved .
13. 2 . 2 Threaded Joints: Threads shall conform to American
National Taper Pipe Thread, ASA B2 . 1-1945 or FS GGG-P-351a. All
burrs shall be removed. Pipe ends shall be reamed or filed out t
size of bore, and all chips shall be removed . Pipe-joint cement and
paint shall be used only on male threads .
i � 13. 2. 3 Wiped Joints : Joints in lead pipe or fittings , or be-
tween lead pipe or fittings and brass or copper pipe, ferrules ,
solder nipples , or traps , shall be full-wiped joints . Wiped joints
shall have an exposed surface on each side of a joint not less than
3/4 inch and at least as thick as the material being jointed. Wall
or floor flange lead-wiped joints shall be made by using a lead ring
or flange placed behind the joint at wall or floor. Joints between
lead pipe and cast iron, steel , or wrought iron shall be made by
means of a calking ferrule , soldering nipple or bushing .
13. 2. 4 Solder or Sweat Joints : Solder or sweat joints for
tubing shall be made with approved fittings . Surfaces to be sold-
ered or sweated shall be cleaned bright . The joints shall be proper-
ly fluxed and made with approved solder. Joints in copper water
-- tubing shall be made by the appropriate use of approved brass water
fittings , properly sweated or soldered together.
i
13. 2. 5 Flared Joints: Flared joints for soft-copper water
tubing shall be made with fittings meeting approved standards . The
- tubing shall be -expanded with a proper flaring tool .
13. 2 . 6 Hot-Poured Joints : Hot-poured compound for clay or
concrete sewer pipe shall not be water absorbent and when poured
against a dry surface shall have a bond of not less than 100 pounds
-� per square inch. All surfaces of the joint shall be cleaned and
dried before pouring. If wet surfaces are unavoidable, a suitable
primer shall be applied. Compound shall not soften sufficiently 1t0
destroy the effectiveness of the joint when subjected to a tempera-
ture of 1600 F nor be soluble in any of the waste carried by the
_i drainage system. Approximately 25 per cent of the joint space at
! � the base of the socket shall be filled with jute or hemp. A pour-
ing collar, ropes , or other device shall be used to hold the hot
compound during pouring. Each joint shall be poured in one oper-
ation until the joint is filled. Joints shall not be tested until
one (1) hour after pouring.
13. 2 .7 Cement Mortar Joints : Cement ,joints shall be used only
when specifically permitted in other chapters of this Code or when
approved by the Plumbing Inspector , as sufficient to accomplish the
purpose of this Code . A layer of jute or hemp shall be inserted
into the base of the joint space and rammed to prevent mortar from
-25-
entering the interior of the pipe. Jute ox hemp shall be dipped in-
to a slurry suspension of portland cement in water prior to insertion
into bell . Not more than 25 per cent of the joint space shall be
used for jute or hemp . The remaining space shall be filled in one
continuous operation with a thoroughly mixed mortar composed of 1
part cement and 2 parts sand , with only sufficient water to make
the mixture workable by hand . After 1/2 hour of setting, the joint
shall be rammed around the entire periphery with a blunt tool to
force the partially stiffened mortar into the joint and to repair
any cracks formed during the initial setting period. Pipe interior
shall be swabbed to remove any material that might have fallen into
the interior . Additional mortar of the same composition shall then
be troweled so as to form a 45-degree taper with the barrel of the
pipe .
13. 2. E Asbestos -Cement Sewer-Pipe Joints : Joints in asbestos -
cement pipe shall be made with sleeve coupling of the same composit-
ion as the pipe, sealed with rubber rings . Joints between asbestos -
cement pipe and metal pipe shall be made by means of an adapter coup-
ling calked as required in Paragraph 13. 1 . 1 .
13. 2 . 9 Bituminized-fiber Pipe Joints : Joints in bituminized-
fiber pipe shall be made with tapered-type couplings of the same
material as the pipe. Joints between hli..tiumin.lzed-fiber pipe and
metal pipe shall be made by means of an adapter coupling calked as
required in Paragraph 13. 2. 1 .
13. 2 . 10 Plastic Pipe: All plastic pipe shall be installed in
strict accordance with manufacturer ' s recommendations and joints
between plastic pipe and fittings shall be made by one of the follow-
ing methods :
A. The solvent weld method, with socket type fittings
molded of the same materials as the pipe.
B. Insert fittings and stainless steel clamps .
C. Screw type plastic fittings on threaded plastic pipe.
Each type of joint shall be made in accordance with manufactur-
er ' s published recommendations .
13. 2. 11 Elastomeric Joints: Elastomeric joints shall be posit-
ive seal , compression type and shall be as approved in accordance
with the requirements of this Ordinance.
CHAPTER 14
TRAPS AND CLEANOUTS
14. 1 TRAPS
14. 1 . 1 General Regulations : Plumbing fixtures , excepting
those having integral traps , shall be separately trapped by a water
seal trap , placed as close to the fixture as possible.
A . Provided, that a combination plumbing fixture may be in-
stalled on one trap , if one compartment is not more than
6 inches deeper than the other and the waste outlets
are not more than 30 inches apart .
i
-26-
SINK TRAY MAXIMUM
rMGXIMUM M4XIMUM,
CONTINUOUS
SOS WASTE CONTINUOUS WASTE (DRAIN)
MAXIMUM 1 FOR THREE-COMPARTMENT
SINK OR THREE TRAYS OR
TRAY,WASTE CONNECTION THRd LAVATORIES IN BATTERY
BELOW,OR WITHIN,TRAP
SEAL PREFERABLE
TWO-FIXTURE CONTINUOUS TWO-FIXTURE CONTINUOUS
WASTE WITH CENTER-TRAP WASTE.WITH END-TRAP OUTLET
OUTLET
Figure 2
Figure 2 illustrates various types of continuous wastes that may
be used when connecting a two-or three-compartment fixture. In the
case of a two-compartment sink with a food-waste disposer under one
compartment , it is best to use a directional fitting.
B. Provided, that one trap may be installed for a set of not
more than three single-compartment sinks or laundry rays
or three lavatories immediately adjacent to each other in
the same room, if the waste outlets are not more than 30
inches apart and the trap is centrally located when three
compartments are installed.
14. 1 . 2 Vertical Distance of Trap to Fixture: The verticalidis-
tance from the fixture outlet to the trap weir shall not exceed 24
inches . The same principle applies to the distance from an integral
fixture trap, as in a water closet, to the connection with a hori-
zontal drain. See Figure 3.
i
Fixture Outlet
Maximum distance from
j$ flxturs. to trap weir
nI i
Maximum defense from slid to
center Bns of horizontal drain
TFaP Weir
Figure 3
14. 2 FIXTURE TRAPS
14. 2. 1 P Traps: Approved types of P traps of the same, or
larger, diameter of the fixture drain may be used.
14. 2. 2 Drum Traps: Drum traps shall be not less than 3 inches
nor more than 4 inches in diameter with at least a 2-inch water
seal . The trap screw shall be one size less than the trap diameter.
_ -27-
14 . 2 . 3 Trap Seal: Each fixture trap shall have a water seal
of not less than 2 inches and not more than 4 inches , except where
a deeper seal is found necessary by the Plumbing Inspector for special
conditions .
14 . 2 . 4 Self-Cleaning: Fixture traps shall be self-cleaning.
14. 2 . 5 Slip Joints : Slip joints or couplings may be used on
the trap inlet or within the trap seal .
14. 2. 6 Prohibited Traps :
A . No trap which depends for its seal upon the action of
movable parts shall be used.
B. Full S-traps are prohibited.
C. Bell traps are prohibited.
D. Crown-vented traps are prohibited.
14. 3 PIPE CLEANOUTS
14 . 3. 1 Underground Drain: Cleanouts , when installed on an
underground drain, shall be extended to or above the finished grade
directly above the place where the cleanout is installed; or they
may be extended to the outside of the building when found necessary
by the Plumbing Inspector . Distance between cleanouts not to exceed
50 feet .
14. 3 . 2 Building Sewer: A cleanout of the same nominal size
as the pipe, up to 4 inches and not less than 4 inches for larger
pipe, shall be installed at the junction of the building (house)
drain and the building sewer . Cleanouts shall also be installed at
intervals not to exceed 100 feet in straight runs and shall be
brought to grade in an approved manner .
14. 3. 3 Change of Direction: A cleanout shall be installed in
horizontal drainage piping at each change of direction greater than
45 degrees , provided that cleanouts may be installed at the end of
branch lines if the change of direction in the branch is made with
two 1/8 bends or with a wye and 1/8 bend and is not more than 40
feet from the cleanout . Test tees or approved two-way cleanouts
may be used for cleanouts where practical .
14 . 3. 4 Concealed Piping: Cleanouts on concealed piping shall be extended through and terminate flush with the finished wall or
floor or brought to grade. Pits or chases may be left in the wall
or floor, provided they are of sufficient size to permit hemoval of
the cleanout plug and proper cleaning of the system.
14 . 3. 5 Base of Stacks : A cleanout shall be provided at or
near the base of each sink waste stack and shall be extended to an
easily accessible location above the floor line or to the outside
wall .
14. 3. 6 Direction of Flow: Every cleanout shall be installed
so that the cleanout opens in a direction opposite to the flow of
the drainage line or at right angle thereto .
14. 3. 7 Prohibited Connections: Cleanout openings shall not be used for the installation of new fixtures or floor drains except
where approved by the Inspector.
14 . 3. 8 Location of Cleanout Plugs: All cleanouts shall be so
installed that there is at least 18 inches of clearance for the pur6
pose of rodding. When unable to maintain 18-inch clearance, extend
cleanout to outside of building or some other accessible location.
I i
-28-
CHAPTER 15
INTERCEPTO'RS, AND BACKWATER VALVES
15 . 1 INTERCEPTORS AND SEPARATORS
15 . 1 . 1 When Required:
-- a. Wastes from kitchen si.nks and dishwashers in any .hotel,
restaurant , club house, boarding house, public institutions ,
hospitals or similar places , &.hall. discharge into an approved
type grease trap of adequate size Before entering the sani-
tary drain or sewer. Th'e grease trap shall be properly vent-
ed. Separate fixture trap and vent will be required if the
grease trap is more than 4 feet horizontally or 30 inches
vertically from the outlet of the fixture it serves .
b. Ail waste water from abbatoirs , poultry dressing plants
and fish and/or sea-food markets , : when such water is used
in connection with killing, dressing, cleaning, washing or
handling of such animals ,- ,poultry or sea-food, . shall dis -
charge into a trough not less than 4 inches deep and 6 inches
wide . This trough shall discharge into a properly trapped
and vented catch basin not less. than 24 x 24 x . 30 inches with
tight fitting solid cover and frame, (See Plumbing Inspector
for proper size.) In fish or s6ea+-food market, the• catch
basin shall have a 2-inch vent extending through the roof )
independently of any other vent ,
C . Waste water from washing machines in washaterias shall
discharge into a trough as described above or into a col-
lection system of copper or cast iron stand-pipes and drain
pipes . This system shall then discharge into a "P" trap' I, -
which is connected to a properly sized catch basin. The " P"
trap need not be vented if it is within 15 feet of the catch
basin.
Catch Basin Sizes
0-24 Washing Machines 24"x24"x48" deep
24-30 Washing Machines 30"x30"x48" deep
30-60 Washing Machines 36"x36"x48" deep
Other interceptors and/or separators shall, be used when, 'in
the judgement of the Plumbing Inspector, they are necessary for the
proper handling of liquid-borne wastes containing elements harmful
to the building drainage system, the public sewer, the sewage treat-
ment plant or any of its processes .
' 15 . 1 . 2 Residential Units : A grease interceptor is -not requir-
ed for individual dwelling units or private living quarters .
15 . 1 . 3 Venting Interceptors : Interceptors shall be so design-
' ed that they will not become air bound if . closed covers are used .'
Each interceptor shall be properly vented.'
15 . 1 , 4 Accessibility of •Interceptor: Each interceptor shall
be so installed -as to provide ready accessibility to the cover and
means for servicing.
15 . 2 BACKWATER VALVES
15 . 2, 1 Fixture Branches: Backwater valves shall be installed
in the branch of the building drain which receives only the dis-
charge from fixtures located within such branch and below grade and
shall be so constructed as• to insure a mechanical seal against backflow.
i
-29-
All bearing parts shall be of bronze or other corrosion resistant
material .
15. 2. 2 Diameter: Backwater valves , when fully opened, shall
have a capacity not less than that of the pipes in which they are
installed.
15 . 2. 3 Location: Backwater valves shall be so installed as to
provide ready accessibility to their working parts .
CHAPTER 16
PLUMBING FIXTURES
16. 1 GENERAL REQUIREMENTS
16. 1 . 1 Quality of Fixtures: Plumbing fixtures shall be con-
structed from approved materials ; have smooth impervious surfaces ; be
free from defects and concealed fouling surfaces; and, except asPper-
mitted elsewhere in this Code, shall conform in quality and design to
one of the following standards:
Staple Porcelain Plumbing 'Fixtures , NBS Commercial Standard
CS 77-48
Vitreous China Plumbing Fixtures , NBS Commercial Standard
CS 20_49 °
Earthenware (vitreous glazed) Plumbing Fixtures , NBS Com-
mercial Standard CS -77-48
Plumbing Fixtures (for) Land Use, F.S .W W - P. - 541a-1947
Formed Steel Enameled Sanitary Ware, F.S . W W - P - 542
Formed Metal Porcelain Enameled Sanitary Ware, NBS Com-
mercial Standard CS 144-47
Hospital Plumbing Fixtures , NBS Simplified Practice Recom-
mendation R 106-41
Plumbing Fixtures , Fittings Trim R 227-47
Lavatory and Sink Traps R 21-46
16. 1 . 1a Alternate Materials: Sinks and special fixtures may
be made of soapstone, chemical stoneware , or may be lined with lead,
copper-base alloy, nickel4copper alloy, corrosion-resisting steel
or other materials especially suited - to the use for which the fix-
ture is intended.
16. 1 . 2 Supply Lines Protected: The supply lines or, fittings
for every plumbing fixture shall be so installed as to prevent bacit-
flow or back siphonage.
16 . 1 . 3 Prohibited Fixtures and Connections : Pan, valve, plung-
er, offset , washout , latrine, frostproof , and other waste closets
having an invisible seal or an unventilated space or having walls
which are not thoroughly washed at each discharge, are prohibited.
Any water closet which might permit siphonage of the contents of the
bowl back into the tank shall be prohibited. Floor-type trough
urinals are prohibited.
16. 1 . 4 Strainers Required: All plumbing fixtures , other than
water closets and siphon-action washdown or blowout urinals , shall
be provided with metal strainers .
16. 1 . 5 Waste Outlets in Lavatories: Lavatories shall have
waste' outlets not less than 1 1/4 inches in diameter. Wastes may
have open strainers or may be provided with stoppers .
16. 1 . 6 Floor Drains: Floor drains shall have approved metal
traps and a minimum water seal of 3 inches and shall be provided
with removable strainers . The open area of strainer shall be at
least two-thirds of the cross section area of the drain line to
which it connects .
-30-
16. 1 ,7 Control Valves_: Compression stops or globe valves shall
be installed on hot and cold water supply pipes to lavatories , water
closets and other fixtures with exposed supplies .
16 . 2 WATER CLOSETS
16 . 2, 1 Flush Tank Capacity: Water closet tanks shall have a!
flushing capacity sufficient to properly flush the water closet bowl .
16. 2. 2 Float Valves : Float valves in lowdown tanks shall close
tight and provide water to properly refill the trap seal in the bowl .
16. 2. 3 Close Coupled Tanks: The flush-valve seat in close
coupled water closet combinations shall be 1 inch or more above the
rim of the bowl , so that the flush valve will close even if the
closet trapway is clogged; or any closets with flush valve seats
below the rim of the bowl shall be so constructed that in case of ,
trap stoppage, water will not flow continuously over the rim of the
bowl .
16. 2.4 Automatic Flush Valves: Flush valves shall be so in-
stalled that they will be readily accessible for repairing. When
the valve is operated, it shall complete the cycle of operation
automatically , opening fully and closing positively under the serf
vice pressure. At each operation the valve shall deliver water in
sufficient volume and at a rate that will thoroughly flush the fix-
-- ture and refill the fixture trap. Means shall be provided for re
gulating flush valve flow. Not more than one fixture shall be ser-
ved by a single flush valve,
16 . 3 URINALS i
16. 3. 1 Automatic Flushing Tank, When Required: Tanks flushing
more than one urinal shall be automatic in operation and of suffic-
ient capacity to provide the necessary, volume to flush and properly
cleanse all uri.n7ALs; simultaneously.
16. 3. 2 Urinals Equipped with Flush Valves: Flush valves shall
be as prescribed in Section 16, 2, 4 and no manually operated valve!
shall be us;e.4 to flush more than one urinal . Automatic electrically
operated flush valves in a bisatt:ery of urinals may be controlled from
one central control device.
16. 3. 3 Trough Urinals: Trough urinals shall be not less than
6 inches deep and shall be furnished with one-piece backs and have
strainers with outlets at least 1 1/2 inch in diameter. The wash-
down pipe shall be perforated so as to flush with an even curtain, of
water against the back of the urinal . This pipe shall be securely
clamped as high as practicable to the back of the urinal . Trough
urinals with tanks shall have a flushing capacity of not less than
1 1/2 gallons of water for each 2 feet of urinal length. Continuous
water flow through perforated washdown pipe may be used to flush
trough urinals .
16. 3. 4 Equivalent Length: Trough urinals shall be figured
on the basis of 1 urinal for each 18 inches of length; i. e. ,
24-inch trough equals 1 urinal
-- 36-inch trough equals 2 urinals
48-inch trough equals 2 urinals
60-inch trough equals 3 urinals
72-inch trough equals 4 urinals
16 . 3. 5 Surrounding Materials : The walls and floor space to a
point 1 foot in front of urinal lip and 4 feet above the floor, and
at least 1 foot to each side of the urinal , shall be lined with non-
absorbent materials .
-31-
.
16 . 4 FOOD WASTE GRINDER UNITS AND RESIDENTIAL DISHWASHERS
16. 4. 1 Disposal Unit: Where a disposal unit is installed in
one of the compartments of a two-compartment sihk,: the disposal unit
shall discharge directly into the trap and a continuous waste may
be used for the other compartment.
16 . 4. 2 Residential Dishwashers: The drain from a residential
dishwasher adjacent to a sink may discharge into a disposal , sink
drain on fixture side of trap, or directly into a vented trap .
16 . 5 DRINKING FOUNTAINS
16. 5 . 1 Design and Installation- The jet of the fountain should _
issue from a nozzle of non-oxidizing, impervious material set at an
angle from the vertical such as to prevent the return of water in
the jet to the orifice or orif-ices from whence the jet issues . The
nozzle and every other opening in the water pipe or conductor lead-
ing to the nozzle should be above the edge of the bowl , so that such
nozzle or opening cannot be flooded in case a drain from the bowl
of the fountain becomes clogged. The end of the nozzle should be
protected by non-oxidizing guards to prevent the mouth -and nose of
the user from coming into contact with the -nozzle.
- 16. 5 . 2 Protection of Water Supply: Stream projectdrs shall
be so assembled as to provide an orifice elevation as specified by
American Standard Air Gaps in Plumbing Systems (ASA A40 .14-1942) and
American Standard Backflow Preventers in Plumbing Systems (ASA A40 .
16-1943) .
16 . 6 SHOWER RECEPTORS AND COMPARTMENTS
16 . 6. 1 Shower-Pan Required: All shower compartments except
approved factory receptors , and those built directly on the ground,
shall have a properly protected pan of lead , copper or approved
equal . The pan .shall turn up on all sides at least 4 inches above
the finished floor level or 3 inches above finished curb level
whichever is the highest . Drain fittings shall be so constructed
that the pan may be securely fastened to the drain fittingrat the
seepage entrance making a water-tight joint between the pan and the
drain. Shower receptacle waste outlets shall be not less than 2 _ ---
inches in diameter and have removable strainers .
16. 6. 2 On the Ground: Shower receptors built on the ground _
shall be constructed from dense non-absorbent and non-corrosive
materials and shall have smooth impervious surfaces , or as provided
in Paragraph 16 . 6 . 1 .
16. 7 SPECIAL FIXTURES
16 . 7 . 1 Specialties: Baptistries , ornamental and lily pools ,
aquaria, ornamental fountain basins and similar constructions , when
provided with water supplies , shall be protected from back-siphonage as required in Paragraph 19. 2 or 19. 3. Specialties requiring water _
and waste connections shall be ,submitted for approval of the In-
spector .
CHAPTER 17
HANGERS AND SUPPORTS
17 . 1 STRAIN AND STRESSES
17 . 1 . 1 General: Piping in a plumbing system shall be install-
ed without undue strains and stresses , and provision shall be made
for expansion, cottractiop,aaiid structural settlement .
17 . 2 VERTICAL PIPING:
-32-
17 . 2 . 1 Attachment: Vertical piping shall be secured at suf-
ficiently close intervals to'keep ' the pipe in alignment and carry the
weight, of the ` pipe and contents .
17 . 2. 2 Cast-Iron Soil Pipe: Cast-iron soil pipe shall be sup-
ported at not less than at every story height and at its base.
17 . 2. 3 Screwed Pipe: Screwed pipe (IPS) shall be supported
at not less than every other story height .
17 . 2 . 4 Copper Tubing: Copper tubing shall be supported at each
story for piping 1 1/2 inches and over and at not more than 4-foot
intervals for 1 1/2 inches and smaller,
17 . 3 HORIZONTAL PIPING
17 . 3. 1 Supports : Horizontal piping shall be supported at::
sufficiently close intervals to keep it in alignment and .prevert
sagging.
i
17 . 3. 2 Cast-Iron Soil Pipe: Cast-iron soil pipe shall be sup-
ported at not more than 5-foot intervals .
17 . 3. 3 Screwed _Pipe: Screwed pipe (IPS) shall be supported at
approximately 10-foot intervals .
17 . 3, 4 Copper Tubing: Copper tubing shall be supported at
approximately 6-foot intervals for piping 1 1/2 inches and smaller
and 10-foot intervals for piping 2 inches and larger.
A -
17 . 3. 5 Lead Pipe: Lead pipe shall be supported by strips or
otherwise for its entire length.
17 . 3. 6 In Ground: Piping in the ground shall be laid on a
firm bed for its entire length, except where support is otherwise
provided which is adequate in the judgement of the Plumbing Inspec-
tor .
CHAPTER 18
INDIRECT WASTE PIPING AND SPECIAL WASTES
18 . 1 SPECIAL WASTES:
18 . 1 . 1 Food Handling: Establishments engaged in the storage,
preparation, selling, serving, processing, or otherwise handling
of food shall have the waste piping from all refrigerators , ice
boxes , cooling or refrigerating coils , steam tables , egg boilers ,
coffee urns or similar equipment discharge indirectly into a sink
or receptor and the waste outl.et shall terminate at least 2 inches
above the flood rim of such sink or receptor.
18 . 1 . 2 Connection: Indirect waste connections shall be pro-
vided for drains , overflows , or relief vents from the water supply
system or air conditioning units . Condensate water may connect to
a sink, lavatory or other equal fixture drain above the trap .
18 , 1 . 3 Sterile Materials : Appliances , devices , or apparatus
such as sterilizers , stills , and similar equipment requiring water
and waste connections and used for sterile material , s hal'l be ink
directly connected or provided with an air gap between the trap Ind
the appliance.
18 . 1 . 4 Drips : Appliances , devices , or apparatus not regular-
ly classed as plumbing fixtures but which have drips or drainage
outlets , shall be drained by indirect waste pipes disc]}arging into
an open receptacle . Condensate waste from residential air condition-
ing units may drain into a flower bed or other out-of-the way place,
or may connect to a sink, lavatory or other like fixture drain on the
q,\ -33-
house side of , and above, the trap .
18 . 1 . 5 Commercial Dishwashing Machines: Dishwashing machines ,
except those in private living quarters or dwelling units , shall be
connected as provided in Paragraph 15 . 1 .
18. 1 . 6 Acid Wastes : Acid and chemical waste pipes shall be
of materials unaffected by such wastes . All acid and chemical
wastes shall be neutralized by passing through a properly construct-
ed and acceptable dilution or neutralizing device. Such device shall
be provided with an automatic intake of diluting water or neutraliz-
ing medium so as to make the waste non-injurious before being dis -
charged into the sewage system. Details of the nature of the cor-
rosive liquid and the proposed method of treating it must be sub-
mitted to and accepted by the Plumbing Inspector before installation.
Vent pipes shall also be of acid resisting material .
18 . 2 LENGTH OF INDIRECT PIPING
18 . 2. 1 Waste Pipe: Any indirect waste pipe exceeding 4 feet
in length shall be trapped.
18 . 2. 2 Length Limitation: The maximum length of an unvented
indirect waste pipe shall,'be 15 . feet .
18 . 2 . 3 Access for Cleaning: Indirect waste piping shall be
so installed as to permit ready access for flushing and cleansing.
CHAPTER 19
WATER SUPPLY AND DISTRIBUTION
19 . 1 PROTECTION OF POTABLE WATER SUPPLY
19 . 1 . 1 Cross Connections: Potable water-supply piping, water-
discharge outlets , backflow-prevention devices or similar equipment
shall not be located so as to make possible their submergence in
any contaminated or polluted liquid or substance .
19. 1 . 2 Approval of Devices : Before any device for the pre-
vention of backflow or back siphonage is installed, it shall have
first been certified as meeting the requirements and tests as re-
quired for backflow preventers ASA A40 . 6-1943. Devices installed
in a potable water supply for protection against backflow shall be
maintained in good working condition by the person or persons hav-
ing control of such devices . The Inspector may inspect such de-
vices and, if found to be defective or inoperative, shall require
the replacement or repair thereof .
19 . 2 PREVENTION OF BACKFLOW BY AIR GAP
19 . 2. 1 Provision for Air Gap: The water distribution system
shall be protected against backflow. Every water outlet shall be
protected from backflow, where possible , by having the discharge
end elevated to provide a "minimum required air gap" as defined in
ASA A40 . 4-1942 and illustrated in Figure 4. Where it is not pos-
sible to provide a minimum air gap, the water outlet shall be equip-
ped with an accessibly located backflow preventer complying with
requirements as stated in. Paragraph 19. 1 . 2 above, installed on the
discharge side of the manual control valve.
19. 3 VACUUM BREAKERS AND AIR GAPS '
19 . 3. 1 Flush Valves: Flush valves shall be equipped with an
approved vacuum breaker. The vacuum breaker shall be installed on
the discharge side of the ,flushing valve with the critical. level at
least 4 inches above the overflow rim of the bowl .
-34-
-� FAUCET AIR GAP
AIR GAP
FLOOD LEVEL
BATH TUB
FLOOR LEVEL
LAVATORY FLOOD
LEVEL
Figure 4
19. 3. 2 Flushing Tanks: Flushing tanks shall be equipped with
an approved ball-cock. The ball-cock shall be installed with the
critical level of the vacuum breaker at least 1/2 inch above the
full opening of the overflow pipe. In cases where the ball-cock
has no hush tube, the bottom of the water supply inlet shall be in-
stalled 1 inch above the full opening of the overflow pipe.
19. 3. 3 Lawn Sprinklers : Lawn sprinkler systems shall be equip-
ped with an approved vacuum breaker on the discharge side of each of
the last valves . The vacuum breaker shall be at least 6 inches above
the highest head and at no time less than 6 inches abolve the surf
rounding ground. Where combination control valves and backflow
preventers are installed, the bottom of the valve shall constitute
the bottom of the backflow preventer.
19. 3. 4 Fixtures With Hose Attachments: Fixtures with hose
attachments shall be protected by an approved vacuum breaker instal-
led 6 inches above the highest point of usage and on the discharge
side of the valve. Except that vacuum breakers on residential
spring-loaded hose and spray attachments are not required.
19. 3. 5 Swimming Pools: Swimming pool water supply shall be
protected by means of an approved backflow preventer or adequatel
air gap. I
19. 4 WATER DISTRIBUTION PIPING AND FITTINGS
19. 4. 1 Materials: Materials for water pipes and tubing shall
be brass , copper, cast iron, wrought iron, open-hearth iron, or
steel , with appropriate approved fittings . All threaded ferrous
pipe and fittings shall be galvanized (zinc coated) inside and out-
side. Under ground connections between ferrous and non-ferrous pipe
shall be made only through an approved dielectric insulating type
of coupling, union, or connector.
19. 4. 2 Selection of Materials: When selecting the material
and size for water supply pipe, tubing, or fittings , due considera-
tion shall be given to the action of the water on the interior and
to the soil , fill or other material on the exterior of the pipe. )
No material that would produce toxic conditions in a potable water
supply system shall be used for piping, tubing, or fittings .
19. 4. 3 Inaccessible Pipes: Inaccessible water piping in or
under floor slabs shall be minimum weight Type L, or better, cop-
per tubing. Copper piping shall be continuous through the floor
having no fittings or joints below the surface of the floor.
19. 4. 4 Used Piping: No piping material that has been used for
other than a potable water supply system shall be re-used in the
potable water supply system.
i
19. 4. 5 Underground Stop and Waste Prohibited: The installat-
ion of stop and waste valves below grade is prohibited .
19. 4. 6 Tank Controls : Supply lines taken from pressure or
gravity tanks shall be valved at or near their source.
-35-
19. 4. 7 Water Heating Equipment: A shut-off valve shall be
provided in the cold water branch line to each water tank or each
water heater.
19. 4. 8 Water Service Pipe: The water service pipe from the
street main to the water distribution system for the building shall
be of sufficient size to furnish an adequate flow of water to meet
the requirements of the building at peak demand, and in no case shall
be less than 3/4 inch nominal diameter from main to point of first
building outlet or branch take-off .
19. 4 . 9 Sizing: The sizing of the water distribution system
shall conform to good engineering practice in accordance with the
following Table. The minimum size of a fixture supply pipe shall
be as provided in the following Table.
TYPE OF FIXTURE PIPE SIZE
OR DEVICE (Inches)
Bath Tubs . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
Combination Sink. . . . . . . . . . . . . . . .
and Tray. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2 -
Drinking Fountain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8
Dishwasher (domestic) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-/2
Kitchen Sink, residential . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
Kitchen- Sink, commercial. . . . . . . . . . . . . . . . . . . . . . . . . . . 3/4
Lavatory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8
Laundry Tray, 1 , 2 or
3 compartments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
Shower (single head) . . . . . . . . . . . ...... . . . . . . . . I . . . • • . . . 1/2 -
Sinks (serv. , slop) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
Sinks Flushing Rim . . . . . . . . . . . . . . . . . . . . • • . . . . . • . • . . 3/4
Urinal (flush tank) . , . , . . • . . . . . . . . . . . . . . . . . . . 1/2
Urinal (direct flush valve) . . . . . . . . . . . . . . . . . . . . . . . • 3/4
Water Closet (tank type) . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8 _
Water Closet (flush valve type) . . . . . . . . . . . . . . . . . . . . 1
Hose Bibbs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
Wall Hydrant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/2
For fixtures not listed, the minimum supply branch
may be made the same as for a comparable fixture,,
19 . 4 . 10 Separation from Drain and Sewer: Except as permitted
in Paragraph 19 . 4. 11 , the underground water-service pipe and the
building drain or building sewer shall be not less than 5 feet a-
part horizontally and shall be separated by undisturbed or compact-
ed earth.
19 . 4. 11 When Separation Not Required: Where the water-service
pipe is 2 inches in diameter and less , the water-service pipe may
be placed in the same trench with the building drain and building
sewer provided the bottom of the water-service pipe, at all points ,
shall be at least 12 inches above the top of the sewer at its
highest point . The water-service pipe shall be placed on a solid
shelf excavated at one side of the common trench. The number of
joints in the water-service pipe shall be kept to a minimum. The
materials and joints of sewer and water-service pipe shall be in-
stalled in such manner and shall possess the necessary strength
and durability to prevent ;the escape of solids , liquids , and gases ,
therefrom, under all known adverse conditions such as corrosion,
strains due to temperature changes , settlement ; vibrations , and
superimposed loads .
19. 4. 12 Water Supply Control: An approved shut-off valve shall
be installed in the water-service pipe on the property side of the
meter and protected by an approved enclosure with a removable cover.
-3 6- Jam,.
19. 4. 13 Provision for Draining System:
All water piping, in pier and beam construct-
ion 'shall be ,installed as illustrated: Pipe to,
a,gr.ade to.
19. 4. 14 Private -Water Supply: No 4•. "•r „10wr .poi1.ntj
private water supply shall be intercon-
nected' with any public water supply, f•
19. 5 WATER HEATERS N
19. 5 . 1 Temperature and Pressure
Relief Valve: All water heaters shall "
be- protected with a combination temperature and pressure relief val-
ve installed in the hot water outlet side of the tank: The. tempera-
ture sensing element shall .be immersed in the water within the upper
6 inches of the storage tank.
19. 5. 2 Relief- Valve Discharge: The discharge pipe 'from .the
temperature and pressure relief valve shall be installed tors grade
that will allow' the entire line to be drained and shall extend' to
the outside of the building approximately -12 inches above grade .,wit'h
the opening toward the ground . Any exception to this requirement
must be approved by the' Plumbing Inspector.. "
19. 5. 3' Approvals: Temperature and pressure relief valves wh!i'ch
have been tested and approved by, or meet the specification requ'lr,e-
ments of the American Gas Association, the Underwriter' s Laboratories ,
Inc'.-, or other recognized approval authorities ,, shall, be considered
acceptable.
19, 5. 4 Pressure Marking of Storage= Tank: . Any storag'e_ ,tank ;here-
after installed for domestic hot water shall have clearly and indeli-
bly stamped in the metal , or so marked upon a plate welded .'there.to',
or otherwise permanently attached, the maximum allowable working 1pres-
sure. Such markings shall be in accessible position ,outside •of the
tank so as to make inspection or re-inspectiion re-adily possibl.e.: F .
All storage tanks for domestic hot water shall meet the appiicabllle
ASME standards .
CHAPTER 20
DRAINAGE ,SYSTEM
20 , 1 GENERAL
20 , 1. 1 Materials: Pipe, tubing .and fittings .for drainage sys-
tems shall. comply with the provisions of Chapter 12 of this Code!
Above ground piping within buildings and piping in raceways or tun-
nels shall be of cast iron,, galvanized open-hearth iron, lead, brass ,
copper pipe, hard copper tube, or type PVC or type ABS plastic pipe.
All materials must conform to the requirements of the Materials and
Use Table on Page 21 and the several applicable standards listed on
pages. 22 thru 24, All plastic pipe shall be installed in .strict
accordance with instructions contained in CS270-65 ,---for ABS „and ;
CS272-65 for PVC and/o.r the manufacturer s ,specifications . . "
20 , 1,, 2 Underground Piping Within Buildings: All such pip3 )g' �
shall- be cast-iron soil pipe, type L or K copper or type PVC or ABS
plastic, conforming to requirements of 20 . 1 . 1 .
20 , 1 , 3 Fittings: Fittings on the drainage system shall con-
e form to the type of piping used. Fittings on screwed pipe shall Ibe
of the recessed drainage type.
20 , 1 . 4 Alignment and Grade: Horizontal drainage pipe shall
be run in practical alignment at a uniform grade.
20 , 2 BUILDING SEWER
-37-
20 , 2 . 1 Separate Trenches: The building sewer , when installed
in a separate trench from the water-service pipe, shall be cast-
iron sewer pipe, vitrified-clay sewer pipe, bituminized-fiber sewer
pipe , asbestos-cement sewer pipe , plastic sewer pipe or type L or
K copper tube. Joints - shall be watertight and rootproo£ .
20 . 2. 2 One Trench: The building sewer, when installed in the
same trench with the water-service pipe, shall be constructed of '
durable materials which are corrosion-resistant and shall be so in-
stalled as to remain watertight and rootproof . The building sewer
shall be tested with a 10-foot head of water or equivalent and
found to be tight .
20 , 2. 3 Bituminized-Fiber Pipe: When bituminized-fiber pipe
is used, it shall be installed in strict accordance with the mane-
facturer' s specifications .
20 . 2. 4 Plastic Pipe: Use of plastic pipe shall be limited to
that specified in Materials and Use Table on page 21 , and shall con-
form to and be installed as required by the applicable standards
listed on pages 22, 23 and 24,
20 . 2. 5 Filled or Unstable Ground: A building sewer or build-
ing drain installed in filled or unstable ground shall be of cast-
iron pipe, except that non-metallic drains may be laid upon an ap-
proved concrete pad�'if in separate trench.
?0,2. 6 Depth of Building Sewer: Building sewers must be in-
stalle'd with a minimum of 12 inches of cover. Where conditions pro-
hibit the required amount of cover, cast-iron soil pipe with caulk-
ed or approved mechanical joints must be used.
20 . 3 DRAINAGE PIPING INSTALLATION
20 , 3. 1 Uniform Grade: Horizontal drainage piping shall be in-
stalled at a uniform slope or grade as follows:
A. Small Pipping: Horizontal drainage piping of. 3-inch
diameter and less shall be installed with a fall of
not less than 1/4 inch per foot .
B. Large Piping: Horizontal drainage piping larger
than_3-inch diameter shall be installed with a
fall of not less than 1/8 inch per foot .
C. Minimum Velocity: Where conditions do not permit
________________
building drains and sewers to be laid with a fall
as great as that specified, then a lesser slope may
be. permitted provided the computed velocity will not
be less than 2 feet per second.
20 . 4 FIXTURE UNIT VALUES
20 . 4. 1 Use of Fixture Unit Value: Fixture unit values as giv-
en in Paragraph 20 , 4 . 2 designate the relative load factor of`°diffe-
rent kinds of fixtures which shall be employed in estimating the i
total load carried by a soil or waste pipe and shall be used in con-
nection with the tables of sizes for soil , waste, and drain pipes
for which the permissible load is given in terms of fixture units .
-38-
20 . 4. 2 TABLE OF FIXTURE. UN.IT_ VALUES_
Fixture-unit Value 'Minimum Size of
Fixture Type as load factor trap (inches)
1 Bathroom group consisting (Tank water
of water closet , lavatory, closet . . . . . . . . 6
-- and bathtub or shower stall (Flush-valve
water closet . . 8
f Bathtub 1 (with or without
overhead shower) . . . . . . . . . . . . . 2 1 1%2
Bathtub I . . . . . . . . . . . . . . . . . . . . . . 3 2
Bidet . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Nominal 1 1%2
Combination sink and tray. . . 3 1 1/2
Combination sink-and-tray with Separate
food disposal unit . . . . . . . . . . . 4 traps 1 1%2,
Dental unit or cuspidor. . . . . . . . . 1/2 1 1/4
Dental lavatory. . . . . . . . . . . . . . . . 1 1 1/4
Drinking fountain. . . . . . . . . . . . . . 1/2 1
Dishwasher , 2 domestic. . . . . . . . . 2 l 1/2
Floor drains 3. . . . . . . 1 -2
Kitchen sink, domestic . . . . . . . . . 2 1 1%2
Kitchen sink, domestic, with
food-disposal unit . . . . . . . . . . . 3 1 1/2
Lavatory 4 . . . . . . . . . . . . . . . . 1 Small PO. 1. 1%4.
Lavatory . . . . . . . . . . . . . . . . . . . . . . . 2 Large PO 1 1%2
Lavatory , barber , beauty parlor , ._. . 2 1 1%2
Lavatory , surgeon ' s .. . . . . . . . . . . . 2 1 1%2
Laundry tray (1 or 2 compart-
ments).. . . . . . . . . . . . . . . . . . . . . . . 2 1 112
Shower stall , domestic . . . . . . . . . 2 2
Showers (group) per head. . . . . . . 3
Sinks:
Surgeon' s . . . : . . . . . . . . . . . . . . . . 3 1 1 /2
- Flushing rim (with valve) . . . . 8 3
Service (trap standard) . . . . . . 3 3
Service (P trap) . . . . . . . . . . . . . 2 2
Pot , scullery , etc . 2 . . . . . . . . 4 1 1 2
Urinal , pedestal , syphon
a jet , blowout . . . . . . . . . . . . . . . . . 8 Nominal 3
Urinal , wall lip . . . . . . . . . . . . . . . 4 1 li 2
Urinal stall , washout . . . . . . . . . . 4 2
Urinal trough 2 (each 2-foot
' section) . . . . . . . . . . . . . . . . . . . . . 2 1 11/2
Wash sink 2 (circular or
multiple, each set of faucet., 2 Nominal 1 1/2
Water closet:
Tank-operated. . . . . . . . . . . . . . . . 4 Nominal 3.
Valve-operated . . . . . . . . . . . . . . . 8 3
1 . A shower head over a bathtub does not increase the fixture value.
2 , See Paragraph 20 . 4 . 3 for method of computing unit value of fix-
tures not listed in Table 20 . 4. 2 or for rating of devices wit
intermittent flows .
3. Size of floor drain shall. be determined bythe area of surface
_ water to be drained .
4. Lavatories with 1 1/4 or 1 1/2 inch traps have the same load value;
large P.O . plugs have greater flow rate .
i
-39-
20 , 4. 3 Fixtures Not Listed in Paragraph 20 . 4. 2: Fixtures not
listed in Paragraph 20 , 4. 2 shall be estimated as follows :
Fixture Fixture Fixture Fixture-
Drain or Trap Size Unit Value Drain or Trap Size Unit Value
1 1/4 inches and smaller. . 1 2 1/2 inches . . . . . . . . . . . . . . 4
1 1/2 inches . . . . . . . . . . . . . . 2 3 inches . . . . . . . . . . . . . . 5
2 inches . . . . . . . . . . . . . . 3 4 inches . . . . . . . . . . . . . . 6
20 . 5 DETERMINATION OF SIZES FOR ,THE DRAINAGE SYSTEM
20 . 5 . 1 Maximum Fixture-Unit Load: The maximum number of fix-
ture=units:, that may be connected to a given size of building sewer ,
building drain, horizontal branch, or vertical soil or waste stack
is given in Paragraph 20 , 5 . 2 and 20 . 5 . 5 .
20 , 5 . 2 Table of Building Drains and Sewers : Maximum number
of fixture-units that may be connected to any portion* (1) of the
building drain or the building sewer.
Diameter of Pipe (Inches) Fall Per Foot
1/16 inch 1/8 inch 1/4 inch 1/2 inch
2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 20
2 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 31
3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * (3) 20 * (2) 27 * (2) 36
4 . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . 180 216 250
5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390 480 575
6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 700 840 1 , 000
8 . . . . . . . . . . . . . . . . . . . . . . . . . 1 , 400 1 , 600 1 , 920 2, 300
10 . . . . . . . . . . . . . . . . . . . . . . . . . 2 , 500 2, 900 3, 500 4, 200
12 . . . . . . . . . . . . . . . . . . . . . . . . . 3, 900 4, 800 5 , 600 6 , 700
* (1) Includes branches of the building drain
* (2) Not over 2 water closets
* (3) Water Closets not permitted
20 , 5 . 3 Minimum Size of Soil and Waste Stacks: No soil or
waste stack shall be smaller than the largest horizontal branch
connected thereto except that a 4 x 3 W. C. connection shall not be
considered as a reduction in pipe size. Said stack to be located
in bath room most remote from sewer main,
20 . 5 . 4 Minimum Size of Stack Vent or Vent Stack: Any struct-
ure in which a building drain is installed shall have at least one
vent stack carried full size through the roof not less than 3 in-
ches in diameter or the size of the building drain, whichever is
the lesser.
-40-
20 . 5 . 5 Table of Horizontal__Fixture _B.ranches:
Maximum Number of Fixture.
Units That May Be Connected To
i
Up to' 3-stories in height Over -3-stories - in height
Diameter of Any horizontal * (1) fix- Total at 1-story or
Pipe (Inches) ture branch branch interval
1 1/4 1 1
1 1/2 3 2
2 * (3) 5 * (3) 4
2 1/2 * (3) 9 * (3) 7
3 * (2) 16 * (2) 12
4 120 90
5 300 200
6 580 350
8 1 , 200 600
10 2, 500 1 , 000
12 3, 900 1 , 500
' I -
I
. * (1) Does not include branches of the building drain line
* (2) Not over one water closet
* (3) Water closets not permitted
20 . 5 . 6 Stack Loading and Vent Requirements Table:
20 . 5 . 6a Stack and Vent Diameter Plus Length of Vent
(1-to-3-stories in height)
Stack Loading
I
Size of Soil Fixture Diameter of Vent Required (Inches)1
or Waste. Line Units 14 12 2 22 3 4 5 6 I8
(Inches) Connected
* (1) Maximum Total Length of Vent (Feet)
2 10* (3) 30 75 200
3 30* (2) 60 200 500
4 240 30 190 250 900
5 540 30 70 300 900
6 960 24 100 250 1 , 000
8 2, 200 30 80 350 1 , 100
10 3, 800 30 80 350
* (2) Not more than 2 water closets may be installed on a three
inch line,;"
-41-
^1
20 . 5 . 6b Stack and Vent Diameter Plus Length of Vent
(Over 3 stories in height)
Stack Loading
Size of Soil Fixture Diameter of Vent Required (Inches)
or Waste Line Units 14 i2 2 3 4 5 6 8 10
(Inches) Connected
* (1) Maximum Total Length of Vent (Feet)
2 24* (3) 20 30 150
3 60* (2) 50 - 80 400
4 500 20 '70 180 700
5 1 , 100 20 50 200 700
6 1 , 900 20 70 200 700
8 3, 600 25 60 250. 800
10 5 , 600 25 60 250 500
112 8 , 400 25 60 250
General: Vent lines are to be. no smaller than one pipe size less than
the fixture trap being served, and intn.o case less than one
and one quarter (14 ) inches . All water closet revents are
to be no less than 2 inches in -size.
* (1) Twenty per cent of the above total vent length may be install-
ed in a horizontal position.
* (2) Not more than 6 water closets may be installed on a 3-inch
stack.
* (3) No water closets permitted.
CHAPTER 21
VENTS AND VENTING
21 . 1 GENERAL REQUIREMENTS
21 . 1 . 1 Vent Pipe Material: Vent pipe material shall conform
to the requirements of Table 12 . 1 . 4 except that material shall be
the same as that required for waste or soil pipe to a point not less
than 6 inches above highest fixture on the stack. Acid vent pipe
material shall be the same as that required for acid waste and the
acid vent system shall not connect to sanitary vent system but ex-
tend separately through the roof .
21 . 1 . 2 Underground: Vent piping placed underground shall be
cast-iron pipe, Type L or K hard copper tube or ASS or PVC plastic
pipe. All materials to conform to the requirements 6f the appli-
cable standards listed on pages 22, 23 and 24. All plastic pipe to
be installed in accordance with the instructions in CS270-65 for
ASS and CS272-65 for PVC.
21 . 1 . 3 Main Stack: Every building in which plumbing is in-
stalled shall have at least one main stack, which shall run undimish-
ed in size or 3 inches , whichever is the lesser, and as directly as
possible, from the building drain through to the open air above the
roof .
21 . 1 . 4 Vent Terminals : Extensions of vent pipes through a roof
shall be terminated at least 10 inches above it except that where a
-42-
roof is to be used for any purpose other than. we.ather protection,
the vent extensions shall be run at least 6 feet above the roof ,
and shall be anchored to the construction in a manner approved as
safe by the Inspector .
21 . 1 . 5 Location of Vent Terminal: No vent terminal from a
drainage system shall be directly beneath any door, window, or other
ventilating opening of the building or of an adjacent building nor,
shall any such vent terminal be within 10 feet horizontally of such
an opening unless it is at least 2 feet above the top of such opei'-
ing.
21 . 1 . 6 Flashings: Joints at the roof around vent pipes shall
be made watertight by the use of (lashings . Such fl'ashings shall )
be made of lead or copper.
21 . 1 . 7 Flag Poling: Vent terminals shall not be used for the
purpose of flag poling, T. V. aerials , or similar purposes .
21 . 1 . 8 Vent Grades and Connections : All vent and branch vent
pipes shall be so graded and connected as to drip back to the soil
or waste pipe by gravity :
21 . 1 . 9 Vertical Rise: Where vent pipes connect to a horizon-
tal soil or waste pipe, the vent shall be taken off above the cen-
ter line of the soil pipe , and the vent pipe shall rise vertically ,
or at an angle not more than 45 degrees from the vertical , to a
point at least 6 inches above the flood-level rim of the fixture pit
is venting before offsetting horizontally or before connecting to
the branch vent . Exceptions to this provision are floor drains and
"P" traps installed under floors .
21 . 1 . 10 Height Above Fixtures: A connection between a, vent
pipe and a vent stack or stack vent shall be made at least 6 inches
above the flood-level rim of the highest fixture served by the vent .
Horizontal vent pipes forming branch vents , relief vents , or loop
vents shall be at least 6 inches above the flood-level rim of the+
highest fixture served. Island sinks where traps are to be in-
accessible may be installed with 2-inch, deep-seal P-traps below
floor and vented with 2-inch soil pipe to wall with cleanout .
21 . 1 . 11 Bar and Soda Fountain Sink Wastes: Where the locat�-
ion and/or construction of bars , soda fountains or counters make
the venting of the sink traps unfeasible, sinks shall waste into la
floor sink or drain that is properly trapped and vented .
21 . 1 . 12 Fixtures Back-to-Back: Two fixtures set back-to-back,
within the distance allowed between a trap and its vent , may be
served with one continuous vent pipe, provided that each fixture
wastes separately into an approved double fitting . having inlet open-
ings at the same level . (See Paragraph 21 . 6 . 3. ) While Paragraph
21 , 6. 3 states " fixtures set back-to-back, " fixtures set side-by-
side also come under its provisions .
21 . 1 . 13 Trap Seal protection: The plumbing system shall be
provided with a system of vent piping which will permit the admi5 -
sion or emission of air so that under normal and intended use the
seal of any fixture trap shall not be subjected to a pressure di£-
ferential of more than 1 inch of water,
21 . 1 . 14 Trap Dip: The vent pipe opening from a soil or waste
pipe, except for water closets and similar fixtures , shall not b
below the weir of the trap .
21 . 1 . 1.6 Crown Vent Prohibited: No crown vent shall be used
nor shall any vent connection be made withi4 .2 pipe diameters of
the trap weir. ,
-43-
21,. 1 . 16 DetE__ining Length of Vent Stac.�.'b The length* of the
vent stack or main vent shall be its developed length from the low-
est connection of the vent system with the soil stack, waste stack,
or building drain to the vent stack terminal , if it terminates sep-
arately in the open air, or to the connection of the vent stack
with the stack vent , plus the developed length of the stack vent
from the connection to the terminal in the open air, if the two
vents are connected together with a single extension to the open
air and shall comply with requirements of Table 21 . 6. 5 .
21 . 2 FIXTURE TRAP VENTS
21 . 2. 1 Distance of Trap From Vent: Each fixture trap shall
have a protecting vent so located that the slope and the developed
length of the fixture drain from the trap weir to the vent fitting
are within the limitations set forth in Paragraph 21 . 2 . 2, except
that water closets , and similar fixtures , shall not be more than
4 ' -0" developed length, measured from the top of the floor flange
to the inner edge of the vent . See Figure C.
21 . 2. 2 Distance of Fixture Trap From Vent Table:
Size of Fixture Distance Trap to Vent
Drain (Inches) Feet Inches Max. Slope per Foot
1 1/2 2 6 1/4"
1 1/2 3 6 1/4"
2 5 0 1/4"
3 6 0 1/4"
4 10 0 1/4"
21 . 2. 3 Hydraulic Gradient and Developed Length,: Figure A,
below, illustrates both the hydraulic gradient principle and the
method of measuring distance from trap to vent. A fixture drain
which slopes more than one pipe diameter between the vent opening
and the trap weir has a greater tendency to self-siphon the trap
seal than a fixture drain installed at a slope of not more than one
pipe diameter.
Figure B, below, illustrates how to measure the developed
length of a drain from the weir of a fixture trap to a vent open-
ing, including an offset . This developed length should not exceed
the developed lengths shown in Paragraph 21 . 2. 2
Vent Pipe Opening
Trap Weir
Hydraulic Gradient
Figure A
One Pipe Diameter
4'-0"
eveloped length ,
Water Closet
Figure B Figure C
-44-
21. 3' COMMON VENT D: ,. NED
21 . 3. 1 This is a vent connecting at the ,junction of two fixture
drains and servicing as a vent for both fixtures . An individual vent ,
installed vertically may be converted to a common vent for two fix-
ture traps when both fixture drains connect with a vertical drain
i
at the same level . I
1 I
� j Mwn
Fltlur. ' ►4wre Fldun
i
� I
'DOMN Yips ' I
co
eaar.aa vanM
21 . 4 WET VENTING AND STACK VENTING
21 . 4. 1 Single Bathroom Groups: A single bathroom group of
fixtures maybe installed with the drain from a back-vented lava-
tory, kitchen sink, or combination fixture serving as a wet vent
for a bathtub or shower stall and for the water closet, provided:
A. . Not more than 4 fixture units drain into a 2-inch dia=
meter wet vent .
B. The horizontal branch, connects to the stack at the same
level as the water closet drain, or below the water
closet drain when installed on the top floor. It may
also connect to the water closet bend. See diagram be-
low, and diagrams on pages 46, 47 and 48,
21 . 4. 2 Examples Showing Approved Wet Vent Installations:
Ioe3" Stack Vent
I , 2" Branch Vent
3" Stack Vent �
I
1 Branch Vent 31� Lev. lk"�f�►I Sink
I Lev. I
}.. Tab or Shower
I X, I �2" Tub
N30__i 2" or Shower
3" So11 Stack
31' Soll Stack
i
i
I
I
-45-
21 :4.2 Examples' ohowing Approved Wet Vent �.iatallation6: (cont)
^ I I./3" Stack Vent
2" Branch Vent
1�3" Stick Vent I
Sink with Dia-
iav l4" 3„_.�I 1AV,1k, I posal lk"
2„
2" We 311 W.C. .2" Tub or
12" Tub "
or Vant �r 2 Shower
SMrar\
21-
\3" Soil Stack
Sell St4ek
21 . 4. 3 Examples Showing Approved Stack Vent Installations:
I-0- 3"
311• ( Stack Vent
Stack Vent
I I
(
Lay. 1%"
Lev. 1§'! /Sink Tub
�3San.
2" Tub or Shower
Tub or
Shower 2" 3'—Y Tee with 2"
W.C. 311/ Soil Stack Side inlet
�—3" San. Tea with
3" 2" side inlet
Soil Stack
1t---3" Stack Vent
1
Lay. 1%" Sink with Disposal
2"
3" W.C.
Tub or Shower 2"
3" Soil Stack
-46-
, . tt
21 . 4. 4 Wet %. nting and Stack Venting L�Jttation: A dxaWing of
any wet vented or stack vented installation which differs from the
examples shown in Paragraph 21 . 4. 2 and Paragraph 21 . 4. 3 shall be
submitted to the Inspector for review and approval prior to instal-
lation.
- 21 . 4. 5 Multi-Story Bathroom Groups: On the lower floors of
_ a multi-story building, the waste pipe from 1 or 2 lavatories may
be used as a wet vent for 1 or 2 bathtubs or showers provided that:
A. The wet vent and its extension to the vent stack isl
2 inches in diameter. See Paragraph 21 . 4. 6. j
B. Each water closet below the top floor is individually
back vented. j
C. The vent stack is sized as given in Paragraph 21 . 4.
below.
21 . 4. 6 Multi-Story Wet Venting:
i
I.
R
h GOOF Through Roof oor
Bath
Tub or Connect to
Main Stack
3n 211
211�► - -
�3n 2"�N
2t
Iay. V nt W. C. LaV.
y
2u
2n Tub
Typical Bathroom
PLAN 1 „
4' (Re-vented) - '
NOTE: This arrangement may 311 Tub
be continued to any number
of floors provided all W. C. s 2" �0.
_ below top floors are re- ~C'
vented as shown on first 311 3°
floor, all lay.s are vent-
ed as shown on second floor,
and pipes are sized in ac- ELEVATION
cordance with requirements
of Tables 20 . 5 . 2, 20 . 5 . 6a TYPICAL TWO-STORY WET VENTING
and 20. 5. 6b.
I
i
-47-
/310
14
�2" (1h" Copper)
4
Lavatory
All Connections be-
�W. C. (Wet vented Breen vents must be at
by Lay.) least 6 inches above highest -
fixture on either stack.
Ar*�1}°
4---Tub or Shover
Lavatory 3"
Ae"3"�x 3" x 3" x 2" side inlet.
%
2" *SW.C. (Wet vented ;.r2" (1il" if Copper)
C.O� by Lay.)
Brought to As- ub or Shover
cessible location /
2"
Ise 3"
TYPICAL TWd-STORY WET VENTING
-48-
Branch or revent shall connect
to main vent at least 6 inches
above flood-level rim of top
fixture
LaV.
Tub or Shower
Tub and W.C. connect
- . to stack at same level.
Both wet vented by
lavatory
mot—3'a. 2 Reducer
La _ / .* —Tub or Shower
' W.0
_ This line moat
be sized in ac-
cordance with pro-
vieione of Table
Y0�,2, Thinedine may be '3" if
�'no more than two W.C. waste
into it and the total num-
ber of fixture units do
not exceed provisions*
of 20.5.2.
TYPICAL TWO-STORY STACK VENTING
^f
-49-
ALav,
All branch or
revents to con-
nect to main vent
�• at teest 6 inches
above flood-level
(wet vented by rim of' highest fix-
V�w•C•(minor fixtures) ture.
d
t2" Tub or s/
s X Y Reducer shower -
*•Lev.
e,910
W,C
�` V.C. (Wet vented by )
2'�, ,Ar (minor fixtures)
This line ex-
tends to receive 3n 4"
waste from two
tube or showers. Tub or
These to' be roughed shower _
similar to two shown. k
TYPICAL TWO-STORY
BACK-TO-BACK BATH INSTALLATION
-50-
21 . 4. 7 Size of Vent Stacks:
Diameter of Vent
Number of Wet-Vented Fixtures Stacks (Inches)
1 or 2 bathtubs or showers 2
3 to 5 bathtubs or showers 2 1/2
6 to 9 bathtubs or showers 3
10 to 16 bathtubs or showers 4
21 . 4. 5 Exception: In multi-story bathroom groups , wet-vent)
ed in accordance with Paragraph 21 . 4. 5 , the water closets below 1.
the top floor need not be individually vented if the 2-inch waste :
connects directly into the water closet bend at a 45-degree angle ]
to the horizontal portion of the bend in the direction of flow.
See Paragraph 21 . 4. 6.
21 . 5 INDIVIDUAL FIXTURE REVENTING
21 . 5 . 1 Horizontal Branches : One sink and 1 lavatory , or 3
lavatories within S feet developed length of a main-vented line, j
may be installed on a 2-inch horizontal waste branch without re-
venting, provided the branch is not less than 2 inches in diameter
throughout its length; and provided that the wastes are connected
into the side of the branch, and the branch leads to its stack
connection with a slope of not more than 1/4-inch per foot .
21 . 5. 2 Limits .of Fixture-Units Above Bathtubs and Water
Closets : A fixture or combination of fixtures whose total dis -
charge rating is not more than 3 fixture-units may discharge into,
a stack not less than 3 inches in diameter without reverting ,
r provided such fixture connections are made above the connections
to the highest water closet , or bathtub, the fixture-unit rating
of the stack is not otherwise exceeded, and their waste piping is
_. installed as otherwise required in Paragraph 21 . 2 . 2.
21 . 6 CIRCUIT AND LOOP VENTING
21 . 6. 1 Battery Venting: A branch soil or waste pipe to which
two but not more than six floor mounted water closets are connected
in battery into the side of a horizontal branch may be vented by
a circuit or loop vent which shall take off , in front of the last
fixture connection. In addition, lower floor branches serving more
than 3 water closets shall be provided with a relief vent taken off
in front of the first fixture connection. When lavatories or
other similar fixtures discharge above such branches , each vertical
branch shall be provided with a continuous vent . All blowout type
fixtures shall be individually vented.
21 . 6. 2 Vent Connections : When the circuit , loop , or relief
vent connections are taken off the horizontal branch, the vent
branch connection shall be taken off at a vertical angle or from
the top of the horizontal branch.
21 . 6 . 3 Fixtures Back-to-Back in Battery: When fixtures are
connected to one horizontal branch through a double Y or a sani-
tary cross in a vertical position, a common vent for each two fix-
tures back-to-back or double connection shall be provided. The
common vent shall be installed in a vertical position as a con-
tinuation of the double connection. See Paragraph 21 . 3. 1 .
I
! i
-51-
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CHAPTER 22
NATURAL GAS PLUMBING ***
^ , 22. 1 TESTING .AND INSPECTION
22 . 1 . 1 Testing Procedure: Testing and inspection shall comply
with provisions of Chapter 9 . 3.
22. 2 GENERAL REGULATIONS
22. 2. 1 New Materials Required: All pipe used for the in-
stallation, extension, alteration, or repair of any gas piping shall
be new, standard-weight wrought iron, black steel , or galvanized
steel , free from splits , internal obstructions , or other defects .
Burred ends shall be reamed to the full bore of the pipe .
22. 2. 2 Outside Gas Lights: Type "K" copper tubing may be used for underground piping in outside gas light installation.
I
22. 2. 3 Underground House-Pipe Lines: Service lines install-
ed underground shall be type L or "Fr-Topper, standard-weight
wrought iron, galvanized steel , or black steel protected against
soil corrosion with an approved type protective coating.,
22. 2. 4 Welded Joints: Welded joints may be used wherever
practical in such cases of industrial and commercial installations
where piping of 2-inches and larger is specified. All welding
shall be performed by a " Certified Welder" with a current rating
in force.
22 . 2, 5 Approved Stop and Hose Cocks: All stop cocks and hose
cocks used in connection with gas house piping shall be of a type
designed and approved for use with natural gas . Fittings 3 inches
and smaller shall be of galvanized malleable iron but cast-iron
fittings may be used in sizes above 3 inches .
22. 2. 6 Bushings: Bushings shall not be used on concealed
work. On exposed work reducing couplings -are to be preferred tol
bushings . When bushings must be used, they should reduce no les's
than two pipe sizes . �-
22 . 2. 7 Concealed Piping: Unions , gland or compression-type
joints , running "threads , and right and left couplings shall not be
used on concealed gas piping. When necessary to inset fittings in
existing piping which has been installed in a concealed location,
the piping may be re-connected by the use of a ground joint union
with the nut "center punched" to prevent loosening by vibration.
22. 2. 8 Insulated Connections: All connections between fer-
rous and non-ferrous piping, except appliance connections , shall)
_ be made by the use of dielectric couplings or unions .
22. 2. 9 Drains or Drip Legs: All house piping shall be proper-
ly graded to a drip of ample size located in an accessible place.
Where space will permit, house pipe will be drained away from meter
to a drip placed at far end of main supply line. Otherwise drip
will be placed at meter location and pipe graded to same,
22. 2. 10 Pipe Supports: All house piping shall be secure)
*** The provisions of this Chapter apply only to installations aer-
ved by natural gas . Where liquefied petroleum gas (LPG) is used ,
this Chapter should be disregarded and such liquefied petroleum gas
installations shall be made in accordance with the regulations of
Articles 60-52-a and 6053, Revised Civil Statutes of Texas , 1925,
(As Amended 1951) .
-53-
fastened to floor joists or sills with either galvanized pipe straps
or pipe hooks , or with perforated pipe straps , and in such a manner
as to prevent pipe from sagging and becoming trapped . The follow-
ing maximum spacing of supports shall be used:
1/2 inch pipe. . . . . . . . . . . . . 6 feet
3/4 inch or 1 inch pipe. . . . . . . . . . . . . . . . . . . . 8 feet
1 1/4 inch or larger pipe (horizontal) . . . . . 10 feet
1 1/4 inch or larger pipe (vertical) . . . . . . . each floor
22. 2. 11 Proximity to Electric Wire: No gas pipe shall be run
closer than six inches to any electric wire unless such electric
wire be inside a conduit.
22 . 2 . 12. Branch and Extension Piping: Gas must not be sup-
plied from a smaller pipe to a larger one. All branch outlet pip-
es shall be taken from top or sides of main supply lines and never
from below.
22 . 2. 13 Underground Pipe and Other Concealed Locations: No
gas piping shall be built into or embedded in any brick, stone, /
masonry, or concrete and no such piping shall be installed in or
on the ground under any building or structure and all exposed gas
piping shall be kept at least 6 inches above grade, except as set
forth in Paragraphs 22. 2. 14, 22 . 2. 17A and 22. 2. 17B.
i 22. 2. 14 Underground House Pipe: When it is .necessary that a
house pipe be laid underground , the underground portion including
joints and risers shall be protected against soil corrosion with
an approved type protective coating and shall be drained to an 'ac-
cessible and suitable drip.
22. 2. 15 Accessibility of Concealed Piping: Gas piping shall
not be run in floor, or through heating , cooling, or ventilating
ducts , elevator shafts , furnaces , refrigerating rooms , drying ovens
or in any place where proper ventilation cannot be continuously
provided.
22. 2. 16 Ditch For Gas Pipe: Gas piping shall not be run in the same ditch with water , sewer , or any other utility line . A
lateral clearance of not less than 2 feet shall be maintained .
Gas piping shall not be located in cinder fill .
22. 2. 17 Gas Piping in Floors: Where the Plumbing Inspector
determines that there is no way to avoid the installation of pip-
ing in solid floors , then one of the following methods of instal-
lation, when approved by the Plumbing Inspector, shall be followed:
A. House piping may be installed in a casing of iron
pipe with tightly sealed ends and joints . The cas-
ing shall extend at least 2 inches beyond the point
where the pipe emerges from the floor. Where re-
quired, the casing shall be vented to the outside
atmosphere and/or coated as specified in Paragraph
22 . 2. 14.
B. House piping may be installed in a channel in the _
floor. Such channel is to be suitably covered so
as to permit ready access to the piping and pre-
vent the entrance of corrosive materials , or it
may be filled with some noncorrosive material
which can be removed with a minimum of damage to
the floor.
C. Paragraphs 22 . 2 . 17A and 22. 2. 17B apply to gas pipe
in solid floors , walls or ceilings . Gas pipe in --
stud walls , ceilings or floors of joist construct- _
ion need not have any protective covering.
-54-
22 . 2. 18 Joint Compound: .- White lead or other suitable joint
compounds shall be used sparingly and applied only to the male threads
in making up joints on gas house piping,.
22. 2. 19 Three-Way Valves : Three-way valves shall not be perk
mitted .
22. 2 . 20 Defective Pipes or Fittings: Repair of split or
_ faulty pipe or fittings shall not be allowed .
22 . 3 PIPE SIZE FOR GAS SYSTEM
22 . 3. 1 Table 1 - Maximum Length of Pipe in Feet
Number
of 1/2 1/2 3/4 1 1/4 1 1/2 2 1/2
inch inch inch 1 inch inch inch 2 inch inch 3 inch
openings pipe pipe pipe pipe pipe pipe pipe pipe
1 27 50 70 100 150 200 300 400
2 50 70 100 150 200 300 400
3 24 70 100 150 200 300 400
4 50 100 150 200 300 400
5 35 100 150 200 300 400
6 60 150 200 300 400
8 45 120 200 300 400
10 65 200 300 400
13 42 175 300 400
_ 15 120 300 400 I
18 90 270 400
20 70 210 400
23 55 165 400
25 45 135 330
30 s0 200
35 60 150
40 50 125
50 80
65 50
75 35
22. 3. 2 Sizing Pipe Systems - For Known Demand: In cases
where the demand in cubic feet per hour of the various appliances
are known, Table 2 , below, shall be used for determining the' size
of house piping required.
22. 3. 3 Table 2 - Minimum Size Where the Demand and Maximum
Length Are Known.
Length Diameter of Pipe in Inches
?- of Pipe z 3/4 1 14 �2 2 3 4 6 8
In Feet vemand in Cubic Feet per Hour
15 76 172 345 750 1200 2480 6500 13880 38700 79000
30 55 120 241 535 850 1780 4700 9700 27370 55850
45 44 99 199 435 700 1475 3900 7900 23350 45600
60 38 86 173 380 610 1290 3450 6800 19330 39500
75 77 155 345 545 1120 3000 6000 17310 35300
90 70 141 310 490 1000 2700 5500 15800 32250
105 65 131 285 450 920 2450 5100 14620 29850
120 120 270 420 ' 860 2300. 4800 13680 27920
150 109 242 380 780 2090 4350 12240 25000
180 100 225 350 720 1950 4000 11160 22800
210 92 205 320 660 1780 3700 10330 21100
240 190 300 620 1680 3490 9600 19740
270 178 285 580 1680 3250 9000 18610
_ 300 170 270 545 1490 3000 8500 17660
450 140 226 450 1230 2500 7000 14420
-- 600 119 192 390 1030 2130 6000- 12480
-55-
i
22 . 3. 4 Sizing Pipe Systems for Unknown •Demand: In cases where
the rating 'is not known, the capacity given in the following table
may be used. Such demand shall be determined in .cubic feet per hour
by dividing the manufacturer ' s B T U input rating of the appliance by 1 , 000 .
22 . 3. 5 Table 3 - Approximate Maximum Gas Consumption for Some
Common Appliances
Input BTU per
Appliance Hr. (Approx. )
Range, domestic , 4 top burners & 1 oven burner. , . . . . . . . . : 62 , 500
Range, domestic , 4 top burners & 2 oven burners . , . . , , . . , . 82 , 500
Range, domestic, 6 top burners & 2 oven burners . . . . . . . . . . 107 , 500
Hot Plate or laundry stove, domestic , per burner. . . . . . . . . 9 , 000
Room heater, domestic, radiant type, per
Single radiant. . . . . . . . . . . . . . . . . . . . . . . 2, 000
Room heater, domestic , radiant type, per
double radiant . . . . . . . . . . . . . . . . . . . . . . . 4, 000
Water heater, automatic instantaneous
(4 gal , per munute) . . . . . . . . . . . . . . . . . . 150 , 000
Capacity (6 gal . per minute) . . . . . . . . . . . . . . . . . . 225 , 000
(8 gal . per minute) . . . . . . . . . . . . . . . . . . 300 , 000
Water heater, domestic , circulation or side arm. . . . . . . , . . 25 , 000
Refrigerator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 500
For automatic storage water heaters and other appliances ,
the input should be determined from the manufacturer' s rating.
22 . 4 STOVES AND OTHER APPLIANCES
22. 4. 1 Prohibited Location of Water Heater: No water heater
which depends on the combustion of natural gas for heat shall be in-
stalled in any room used or designed to be used for sleeping purposes ,
bathroom, clothes closet , or in any closet or other confined space
opening into any bath or bedroom. (For exceptions see Paragraph
22. 8 . 1 . )
22 . 4 . 2 Location of Appliance Stops: Each and every, gas stove,
range, cooking stove, water heater, and other gas consuming appliance
shall be provided with a lever handled stop cock located in the riser
above the floor, and on the upstream side of the union, at the ap-
pliance. Such stop cock shall be readily accessible at all times ,
22 . 4. 3 Appliance Connections :
A. Gas connection to stoves , ranges , cook stoves , water
heaters and other appliances , shall be made by rigid -
metal connections , except that American Gas Association
approved flexible metal may be used for connections for
small portable heating appliances , provided there is no. _
cock on such portable heating appliance.
B. . Non-portable appliances such as central heating, water
heating, and similar equipment shall be connected to the
gas piping with rigid pipe or by approved semi-rigid
tubing not more than 2 feet in length.
C. . Hot plates , clothes dryers , room heaters , refrigerators ,
domestic gas ranges , and similar equipment , shall be
connected to the gas piping with rigid pipe, approved
semi-rigid tubing or approved appliance connectors of
flexible metal tubing and fittings . When a semi-rigid
tubing connection or a connector o.f flexible metal
tubing and fittings is used, it shall connect to an out-
let in the same room as the appliance. The length of
-56-
the connector shall not exceed 6 feet . The connector
shall be installed so as to be _protected against physi-
cal ..damage.
22. 4 , 4 Prohibited Connections : The connection of an appliance
with any type of gas hose is prohibited, except when used with lab-
oratory , shop , or ironing equipment that requires mobility during
operation. Such connections shall have the shut-off or stop cock
installed at the connection to the building piping . Where gas ,hos,e
is used, it shall be of the minimum practical length, but not to
exceed 6 feet and shall not extend from one room to another nor
pass through any walls , partitions , ceilings , or floors . Under no'
_ circumstances shall gas hose be, concealed from view or used in a
concealed location. Only listed gas hose shall be used. Listed
gas hose shall be used only in accordance with the terms of its
listing . Gas hose shall not be used where it is likely to be sub-
ject to excessive temperatures (above 1250F. ) .
22. 4. 5 Canopies and Vents in Hotels , Restaurants , Etc . :
A. Ranges , hot plates , etc. used in hotels , restaurants ,
and hamburger stands where gas is used for fuel , must
be provided with canopies properly vented into brick,
tile or metal flues extending to open air at least 18
inches above the roof .
B. Vent pipes from canopies may connect with a chimney
flue in attic if flue is provided with an approved
liner; or may extend through the roof to open air at
least 15 inches above the roof and terminate with an
approved cap.
C. Wood partitions through which vent pipes pass must be
protected by a thimble with a proper air space, except
that no vent pipe shall pass through any closet or pan-
try used for the storage of clothing, household goods
of any combustible material .
22. 4 . 6 Draft Diverters Required: Water heaters and gas appli-
ances having pilot burners must be provided with down draft devices
above the fixtures in the vent , near the appliances . '
22. 4.7 Size of Vent and Flue Connections : Furnaces and water
heaters must be provided with vent and flue connections at least as
large as the vent connection on the furnace or water heater and ex-
tend to open air at least 15 inches -above the roof and terminate
with an approved cap ,
22 . 5 LISTED APPLIANCES AND ACCESSORIES
22. 5 . 1 Defining the Word "Listed" : The word " listed" used in
connection with appliances and accessories throughout'. the present
text refers to appliances and accessories which are shown in a list
published by an approved nationally recognized testing agency* ,
qualified and equipped for experimental testing, and maintaining an
adequate periodic inspection of current production of listed models
and whose listing states either that the appliance or accessory
complies with nationally recognized safety requirements or has been
tested and found safe for use in a specified manner.
22. 5 . 2 Type of Gas: It shall be determined that the appliace
has been designed for use with the gas to which it will be connect-
ed . No attempts shall be made to convert the appliance from the
gas specified on the rating plate for use with a different gas with-
out consulting the local gas company or, the manufacturer for complete
instructions .
* The American Gas Asso-ciation, Inc. .Laboratories and Underwriters '
Laboratories , Inc. are such nationally recognized testing agencies .
-57-
22. 5 . 3 Permissible Temperatures on Combustible Materials: All
gas appliances and their flue or vent connectors shall be installed
so that continued or intermittent operation will not create a hazard
to persons or property. They shall not , during operation, raise _
the temperature of unprotected combustible walls , partitions , floors ,
or ceilings more than 900 F above normal room temperature when measur-
ed with mercury thermometers or conventional bead type thermocouples .
22 . 6 AIR FOR COMBUSTION
22 . 6 . 1 Ventilation Requirements: Appliances shall be instal -
led in a location in which the facilities for ventilation permit
satisfactory combustion of gas and proper venting under normal con-
ditions of use. While all forms of building construction cannot
be covered in detail , this requirement may usually be met by appli-
cation of one of the following methods in ordinary building con-
struction.
A . In buildings of conventional frame, brick, or stone
construction without enclosed appliance rooms , base-
ment storm windows , or tight stair doors , infiltra-
tion is normally adequate to provide air for com-
bustion and draft hood dilution. 7
B. Where appliances are installed in a confined space
within a building having adequate air infiltration,
provisions shall be made for supplying this space
with air for combustion and ventilation. This may be
accomplished through use of two permanent openings
freely communicating with interior areas of adequate
infiltration or by compliance with provisions of _
Item • C. Where necessary, continuous ducts having
cross-sectional areas equal to the openings shall be
utilized to communicate with the source of air supply .
The minimum dimension of rectangular air ducts shall
be not less than 3 inches .
C. Where appliances are installed in a confined space
within a building of unusually tight construction, air
for combustion and ventilation must be obtained from
outdoors or from spaces freely communicating with the _
outdoors . (Crawl space, attic , or open air. ) Under
these conditions , there shall be two openings having
a combined free area of not less than one square inch
per 1000 BTU per hour of input rating. One opening
shall be near the top of the enclosure and one near
the bottom. These openings shall be of approximately
equal area and shall communicate with the se•le'cted
source , or sources of adequate air supply , by ducts .
Ducts shall be continuous and of the same cross-sectional
.area as the openings to which they connect . The mini- _
mum dimension of rectangular air ducts shall be not
less than 3 inches .
22. 7 PRESSURE REGULATORS
22. 7. 1 Venting Requiremmonts for Pressure Regulators: Gas ap-
pliance pressure regulators requiring access to the atmosphere for -
successful operation shall be equipped with a vent pipe leading into
the combustion chamber adjacent to a constantly burning pilot , un-
less constructed or equipped to limit the escape of gas from the
vent opening in the event of diaphragm failure to not more than
1 . 0 cu. ft . per hr. of a 0 . 6 sp-gr. gas at 7 inches water column pres-
sure. The vent terminal shall be located so that the escaping gas
. will be readily ignited from the pilot flame and the heat liberated will not adversely affect the operation of the thermal element .
The terminus of the vent shall be securely held in a fixed position --
relative to , and approximately 1/2 inch below, the pilot flame.
-58-
V.wilaling air ovtleTveg- Rue should lwminule above peak of roof and above
istar fer furnace room nearby wall,to assure satisfactory flue psrfar.
1 sa.I..free area for manes. In inttall.ions where the R. terminal is
') each 1000 Btu per hour Ow�1oulA;uW1
below nearb walls or roof peaks,an. ectin vent
lure... input. loa }.bore relief openindraft hood.Its,41er not be blocked by dror other furnishings.
Both registers musNo port of fumxeeither face sameating dew than6
large well von ilmeinches to tall.
Inferior space or enteed to such space 'Spacing beMen
by'means of ductsdraft hood and wagVertical distance IL tof least 6 inches. If
Qof ngitlert shoulflue products may
be nor less than 3'A6• directed toward
feet. wall,12 inchNepa .
inp rscemmefded.
Suggest room access Aircirculaled byhnnoq
door be not Iess than 6 I must be handled by
feel high bye widlh,.Ri. ducts which . se I
ciw 10 provide far in. Combustion and ventilation to furnace casing and
rtallatien or remexal of air inlet resister tar furnace are'sniirdy senate
furnace.At least 2 feel room 1 sa. in.frsr airs.for From mooms pravtded far
horisoNat clearance each 1000 Btu per hour fur- supplying combustion
should be provided in nets input,located of or be. and ventilation ai&
front of furnace when law combustion air inlet to
closer door is open or fume...Register must net be
1B inches when door is blocked by drapes or other •aAo.00mre i
dosed.' Furnishings. far a dour spoup.
- I
Figure 2
22. 8 WATER HEATERS
22. 8 . 1 Prohibited Installations: Water heaters shall not 'be
installed in bathrooms or bedrooms . However, listed water heaters
of the automatic storage type may be installed as a replacement in
a bathroom, when specifically authorized by the Plumbing Inspeci or,
providing they are properly vented and are supplied with adequate
combustion air.
22. 8. 2 Location: Water heaters shall be located as close as
practicable to the flue or vent . They should be so located as to
provide short runs of piping to fixtures .
22. 8. 3 Clearance: Listed gas-fired water heaters shall be
positioned in relation to combustible construction with a minimum
clearance in accordance with Table 22. 8 . 4. In no case shall the
clearance be such as to interfere with the requirements for com!
bustion air and accessibility for servicing. See Paragraph 22. 6. 1 .
Unlisted water heaters shall be installed with a clearance of 12
inches on all sides and rear. Combustible floors under unlisted
water heaters shall be protected in accordance with the Plumbing
Inspector ' s instructions .
22 . 8 . 4 Minimum Clearances for Listed Gas-Fired Water Heaters:
Type of
Heater** Nearest Part. of Jacket Flat Side
Type A 6
Type B 2
Type C . . . Flush
**Type A - Miscellaneous (including circulation tank, instantaneous ,
uninsulated underfired) .
Type B - Underfired, insulated automatic storage heaters .
Type C - Type B units with one or more flat sides and tested for
l_ installation flush to wall .
i
-59-
1, 22. 9 CENTRAL HEATING BOILERS AND FURNACES
iI
22. 9. 1 Independent Gas Piping: The gas line shall be a sepa-
rate line direct from the meter to the boiler or furnace, unless the
existing gas line is of ample capacity. Any contemplated use of
existing gas piping shall be verified.
22. 9. 2 Manual Main Shut-off Valves : Where a complete shut-
off type automatic pilot system is not utilized, a manual main shut-
off valve shall be provided ahead of all controls except the manual
pilot gas valve. Where a complete shut-off type automatic pilot
system is utilized , a manual main shut-off valve shall be provided
ahead of all controls . A suitable manual valve shall be provided
for shutting off the main burner gas independently of the pilot gas .
A union connection shall be provided downstream from the manual
main shut-off valve to permit removal of the controls .
22 . 9, 3 Clearance: Listed central heating boilers and furnaces
shall be installed with clearances not less than specified in Table
22. 9 . 4, except that appliances listed for installation at lesser
clearances may be installed in accordance with their listings . In
no case shall the clearance be such as to interfere with the re-
quirements for combustion air and accessibility .
22. 9. 4 Minimum Clearances for Listed Central Heating Boilers
and Furnaces•
Jacket Projecting Flue
Type of Sides Box or ..
Appliance Above and Rear Front Draft Hood
Boilers 6 6 18 6 .
Furnaces 18* 6 18 6
* A vertical clearance of 6 inches may be used with warm air
furnaces equipped with mechanical means to circulate the air with
an approved temperature limit control that cannot be set higher
than 2500 F. -
22. 10 FLOOR FURNACES
22. 10 . 1 Installation: Listed floor furnaces may be installed
in combustible floors . Unlisted floor furnaces shall not be in-
stalled in combustible floors .
22 . 10 . 2 Manual Main Shut-off Valve: A separate manual main
shut-off valve shall be ,provided ahead of all controls and a union
connection shall be provided downstream from this valve to permit
removal of the controls or the floor furnace.
22. 10 . 3 Combustion Air: Fixed ventilation by means of a duct
or grille arranged to supply air from a permanently vertilated at-
tic , underfloor space, or open air, shall be provided to any con-
fined space which enclosed the floor furnace. The duct or grille
shall be screened and have a free area at least twice the free
area of the vent collar of the floor furnace or one sq, in, per
1000 BTU per hour of gas input , whichever is the greater, and shall
be installed in s.uch a manner as to insure proper combustion.
22. 10 . 4 Placement: The following are requirements for proper-
ly placing the. furnace or furnaces to serve one story:
A. No floor furnace shall be installed in the floor of any -
aisle or passageway of any auditorium, public hall ,, or,
place of assembly or in an exit4way from any such room
or space.
-60-
B. Walls and Corners - with th;e .exception of wall-register
models , a floor furnace- shall not be placed closer than
6 inches to the nearest wall , and wall register models
shall not be placed closer than 6 inches to a corner.
-I C. Draperies - The furnace shall be so placed that a door,
drapery, or similar object cannot be nearer than 12
inches to any portion of the register of the furnace.
D. No door or doors that can be closed shall be permitted
between the floor furnace location and the controlling
thermostat .
22. 10 . 5 Clearance: The lowest portion of the floor furnace
shall have at least a 6-inch clearance from the general ground
level , except that where the lower 6-inch portion of the floor fur-
pace is sealed by the manufacturer to prevent entrance of water, I
the clearance may be reduced to , not less than 2 inches . When these
clearances are not present , the ground below and t.o the sides shall
be excavated to, form a " basin-like" pit under the furnace so that
the required clearance is provided beneath the lowest portion of
the furnace. A 12-inch clearance shall be provided on, all sides
except the control side, which shall have an 18-inch clearance .
,22. 10 . 6 Access: .Provision shall be made for access to the
floor furnace by means of an opening in the foundation wall of at
least 18 by 24 inches , located at some convenient point , and a
clear and unobstructed passageway to the floor furnace of at least
18 inches high by 24 inches wide,
22". 10 ,7 Seepage Pan: Whenever the excavation exceeds 12 inches
or water seepage is likely, a watertight copper pan, concrete pit ,'
or other suitable material shall be used. A copper pan shall .be
made of not less than 16-ounce-per-square-foot sheet copper . The
pan shall be anchored in place, so as to prevent floating, and the
walls shall extend at least 4 inches above the ground level , with
12 inches clearance on all sides except the control side, which
shall have 18 inches clearance. When the equipment is sealed by
the manufacturer to meet this condition, the pan or pit may be omit-
ted if not required for maintaining a dry condition for service
access .
22. 10 . 8 Wind Protection: Floor furnaces shall be protected,'
where necessary, against severe wind conditions .
22 . 10 . 9 Upper Floor Installations : Listed gas floor furnaces
may be installed in an upper floor provided the furnace assembly
projects below into a utility room, closet , garage, or similar non-
habitable space. In such installations , the floor furnace shall
be enclosed completely (entirely separated from the non-habitable
space) with means for air intake to meet the provisions of Para-
graph 22. 10 . 3 with access facilities for servicing ,on the control
side, with minimum furnace clearances of 6 inches to all sides an
bottom, and with the enclosure constructed of Portland cement
plaster on metal lath or material of equal fire resistance .
22, 1.1 DUCT FURNACES
22 . 11 . 1 Independent Gas Piping: The gas line shall be a
separate line direct from the meter to the duct furnace, unless
the existing gas line is of ample capacity . Any contemplated use
of existing gas piping shall be verified.
22. 11 . 2 Clearance: Listed gas-fired duct furnaces shall be
installed with clearances of at least 6 inches between adjacent
walls , ceilings , and floor of combustible construction and the
appliance projecting flue box _or draft hood, except that duct
furnaces listed for installation at lesser clearance may be instal-
led in accordance with their listings . In no case shall the
-61-
clearance be such as to interfere with the requirements for combus-
tion air. See Paragraph 22. 10 . 3. Unlisted duct furnaces shall be
installed with clearances to combustible construction in accordance
with the requirements for central heating furnaces and boilers , Para-
graph 22. 11 . 3. Combustible floors under unlisted duct furnaces shall
be protected in an approved manner .
22. 11 . 3 Erection of Furnace: A duct furnace shall be erected
and firmly supported in accordance with the manufacturer ' s instruct-
ions .
22. 11 . 4 Accessibility: The installation of duct furnaces
shall be such as to make them accessible for servicing.
22. 11 . 5 Circulating Air: Circulating air shall not be taken
from the same enclosure in which the furnace is located.
22 . 11 . 6 Duct Furnaces Used With Air Conditioning Systems:
Duct furnaces , when used in conjunction with an air conditioning
system, shall not be located downstream from the evaporator coil .
22. 12 APPLIANCE AND EQUIPMENT VENTS
22. 12. 1 Appliances Requiring Vents: Vents shall be required
on floor furnaces , suspended heating units , insert wall furnaces ,
boilers , AGA appliances having down draft diverts , duct furnaces ,
attic furnaces , below the floor heating units , water heaters (and
other gas -fired appliances designed to be used with a vent) .
22. 12. 2 Type of Vents: Such vents for equipment having an
hourly BTU input rating of 750 , 000 or less shall be constructed of
approved double wall metal pipes having an exterior casting of
galvanized iron or .aluminum and an interior lining of aluminum or
non-corrodible metal and separated by not less than 1/2-inch of
dead airspace, or other listed type of vent approved by the Plumb-
ing Inspector, except that water heaters shall be vented with double-
wall metal pipe.
22. 12. 3 Supports: All vent pipes shall be supported by and
secured to rigid structural members in such manner as to prevent
vertical or horizontal displacement . Vent stacks shall extend con-
tinuously through the roof to a point not less than 15 inches above
same.
22. 12 . 4 Industrial or Public Buildings: In buildings used
for commercial , industrial or public purposes , equipment having an
hourly BTU input rating of more than 750 , 000 shall be connected to
stacks designed and built according to accepted engineering standards
and approved by the City Plumbing Inspector.
22. 12. 5 Vent Caps : An effective vent cap which does not re-
duce the cross-sectional area of the vent outlet and also protects
against wind-induced down drafts , rain and snow shall be used.
22 . 12. 6 Vent Flashings: Sheetmetal flashings of aluminum,
copper or galvanized iron shall be used.
22. 13 VENTING REQUIREMENTS
(The following tables apply specifically to double-wall Type
B gas vents constructed of metal , including all fittings ,
from the draft hood outlet to top of vent. )
22. 13. 1 Individual Vents: Total Vent Height is the vertical
distance between the draft hood outlet and the vent top . The posi-
tion or rise of a connector, or the location of an offset , has no
effect on the total vent height . Length of Lateral is the horizon-
tal distance or offset between the draft hood outlet and the final
vertical portion of vent. (See Figure A on following page. )
-62-
22. 13. 2 Procedure for
i TAL
Using The Individual Vent EeOF VENT
Table: To determine the EarExaL HEIGHT
� proper vent size for an in- 11
dividual vent , apply the
Table on the following page
-- as follows:
nvvunxcE
Figure A
I
(1) Determine total vent height and length of lateral , based
on appliance and vent location, and height to top of vent
pipe.
- (2) Read down the total vent height column at the left to a
height equal to or greater than the total vent height .
(3) Select the horizontal: row for the appropriate length of
lateral (Zero for straight vertical vents) .
(4) Read across to the first column which shows a capacity,
equal to or greater than the appliance nameplate heat in-
put, except for room heaters , floor furnaces , and vented
recessed heaters , in which case stop at the first value
which is equal to or greater than 1 . 4 times the nameplate
heat input .
4_ (5) If the vent size shown at the top of the column containing
the correct capacity is equal to or larger than the apl-
pliance draft hood, use- the vent shown by the Table. ,
I
(6) If , however, the vent shown is smaller than the draft hood
size, see Paragraph 22. 13. 4.
22..13. 3 Example: i
A typical individual venting pro-
ject is shown in Figure B. The!
furnace has a 150, 000 BTU capacity
and a 6-inch draft hood.
Procedure:
20FT.
rort. Go down the Total Vent Height
column to 20-foot height and across
on the line for 10-foot lateral .
150 , 000 BTU capacity is found in
5-inch size column.
228 ,000 BTU capacity is shown in
6-inch size column.
5-inch size is adequate because
, Figure B total height exceeds 10 feet (slee
Paragraph 22. 13. 4) .
_ -63-
I
Rdga'rdless of the size vent shown by the Tables or Calculator _
for such appliances , do not connect four-inch draft hoods to
three-inch vents .
Table 6
INDIVIDUAL VENT TABLE
MAXIMUM CAPACITY, Thousands of BTU Per Hour'
TOTAL LENGTH
n KT LATERAL 3" 47 5" 6" 7" 8' 10" 12" 14" 16" 18" 20" 22" 24'
0 45 80 125 180 245 320 500 120 970 1280 1630 2000 2430 2900
4" 2' 30 59 94 137 190 750 405 580 740 960 1220 1520 1830 2180
4' 29 56 90 133 185 243 395 I 570 730 950 1215 1510 1820 2170
0' 27 53 84 125 175 232 377 525 700 930 1190 1505 1810 2160
0 46 86 141 205 285 370 570 850 1170 1530 1960 2430 2950 3520
6. 2' 36 67 105 157 217 205 455 650 890 1170 1480 1850 2220 2670
6' 32 61 100 149 205 '273 435 630 870 1150 1470 1820 2210 2650
12' 28 55 91 1 137 190 255 486 610 840 1110 1430 1795 2180 2600
0 50 94 155 235 320 415 660 970 1320 1740 2220 2750 3360 4010
8. 2' 40 75 120 ISO 247 322 515 745 1020 1340 1700 2110 2560 3050
8' 35 66 109 165 227 303 490 720 1000 1320 1670 2070 2530 3030
36' 28 58 96 148 1 206 1 201 458 685 950 1260 1680 1 2035 2470 2960
0 53 100 166 255 345 450 720 1060 1450 1925 2450 3050 3710 4450
10• 2' 42 81 129 195 273 355 560 050 1130 1480 1090 2340 2940 3390
10, 36 70 115 175 245 330 525 785 1080 1430 1840 2280 2780 3340 _
20, — 60 100 154 217 300 486 735 1030 1360 1780 2230 2720 3250
0 58 112 187 285 390 525 840 1241 1720 2270 2900 3620 4410 5300
15, 2' a93 150 225 316 414 675 905 1350 1770 2260 2800 3410 4BBO
is, 37 76 120 ISO 275 373 610 905 1250 1675 2150 2700 3300 3980 _
30' — 60 107 169 243 320 553 845 _ 1180 1550 2050 2620 3210 3040
0 61 119 202 307 430 575 930 1350 1900 2520 3250 4060 4980 6000
2' 51 100 166 249 346 470 755 1100 1520 2000 2570 3200 3910 4700
20' 1W 44 89 150 220 321 443 710 1645 1460 1940 2500 3130 3830 4600
20' 35 78 134 208 295 410 665 990 1390 1080 2430 3050 3780 4550
3N — 6s 120 188 273 1 380 626 945 1270 1700 2330 1 2980 1 3650 4390
0 64 128 220 335 475 650 1060 1550 2170 2920 3770 4750 5850 7060
30• 2' 56 112 185 280 394 535 885 1310 1800 2380 3050 3810 4650 56M
•20' 90 154 237 343 473 784 1185 1650 2200 2870 3650 4410 5310
40' — — 200 238 415 705 1075 1520 2060 2780 3490 4270 5140
0 66 132 228 353 MO 685 1140 1730 2400 3230 4180 5270 6500 78H
�• 2' 59 118 198 298 420 579 960 1420 2000 26S0 3420 4300 3260 9320
20' (O 167 261 377 516 860 1310 1830 2460 3200 4050 5000 6070
40' — — — 223 333 460 785 1 1205 1 1710 2310 3020 3840 4780 5820
0 — 1U 238 373 535 730 1250 1920 2700 3650 4740 6000 7380 9000
60' 2' _ In213 330 470 650 1060 1605 2250 3020 3920 4960 S130 7400
30 170 275 397 555 830 1440 2050 1 2780 3640 4700 5730 7000
60' — — — — 1 334 475 630 1205 1670 2560 3380 4330 5420 6660
0 — — 239 .384 550 755 1290 2020 2080 3900 5100 6450 MM $750
80• 2' _ _ 217 350 485 683 1145 1740 2460 3320 4310 5450 6740 8200
40 275' 404 570 980 1515 2180 2980 3920 50M 6270 7650
BW — — — — — 850 1420 2000 2750 3640 4690 SON 7200
0 — — 400 560 770 1310 2050 2950 4050 5300 6700 8800 10300
00• 2' — — — 375 510 700 1170 1820 2550 3500 4600 5800 7200 UN
SO' 405 575 IBM 1550 2250 3100 4050 5300 66M 8100
100' — — — — — — 870 1 1430 1 2050 28M 3750 1 4900 1 6100 1 7500
NOTIS s
A " See step 4 of paragraph 22..13.2 _
■ "—" Whera no capacity is given,vent may be liable to both spillage and condensation.
C Regardless of altitude, always design vent for sea level nameplate appliance input.
Y "0"lateral applies only to a vertical vent attached to a top outlet draft hood. n
22. 13. 5 Combined Vents : A "combined ' vent is a venting system
for two or more appliances at one level attached to a common vent .
"Least Total Height" is the vertical distance from the highest ap-
pliance draft hood outlet in the system to the top of the vent. This
is one fixed dimension for any one system regardless of the number
or placement of appliances in the system. " Connector Rise" for any
appliance is the vertical distance from its draft hood outlet to the point where the next connector joins the system. A " Common Vent"
is the portion of the venting system above the lowest interconnection.
When the common vent is entirely vertical , it is called a Vertical _
-64-
or •�V�• type. Otherwise the common vent is a ,;,&ceral or "U"- 'type.'
` 22. 13. 6 Procedure for Determining Each Vent Connector Size:
(1) Determine the Least Total Height for the system.
(2) Determine the Connector Rise for each appliance.
I
(3) Enter the Vent Connector Table at the appropriate
Least Total Height. Continue across on the line for
the first appliance Connector Rise to the nameplate
BTU rating (or the next higher rating) for that ap-
pliance. Read the connector vent size for that ap-
pliance at the top of this column.
(4) At the same Least Total Height , repeat the procedure
- for the Connector Rise and BTU rating for each appliance.
CAUTION: Never use a connector smaller than draft hood outlet size,
22. 13. 7 Procedure for Determing Size of Common Vent:
(1) Add together all appliance BTU input ratings to deter-
mine the total BTU rating.
(2) Enter the Common Vent Table at the same Least Total
Height used in Paragraph 22. 13. 6
(3) Continue across either on the "L" line or on the "V••
line as indicated in Paragraph 22. 13. 5 .
(4) Stop at the first value which is equal to or greater
than the total BTU rating.
(5) Read the size of the Common Vent at the top of this
column.
CAUTION: Regardless of table results , the Common Vent must always
be at least as large as the largest connector. I£ both;
connectors are the same size, the common vent must be at
least one size larger.
22. 13. 8 Example:
IS FEET LENT ONE FOOT15 FEET T
LEAST IS FEET T IC0,000 TOTAL IN IT:TOTAL RISE LEAST
LEAST NNON VENT
5 I
INTERCONNECTION INTERNNECTION TOTAL NLX SIZE
TEE HEIGHT HEIGHT
4IMLN THREE FEET
_ SIZE CONNELmR pIGE
HATER - INCH _
NEATER SIZE ■ATER
- 55,000 FURNACE NEATER55,000 FURNACE
105,000 105,000
O 0 O
Figure A shows a typical two-appliance combined-vent system.
To determine common vent and individual connector sizes , use the
following procedure:
(1) Enter the Vent Connector Table at a Least Total Height of
15 feet and a Connector Rise of 1 foot. Read across to
the BTU rating next higher than the water heater rating.
This is the column showing 53, 000 BTU. At the top of
this column a 4-inch connector size is designated for
the water heater. See Figure A, above.
-65-
("2) • Enter the Vc'u'c Connector Table at the same Least-Total
Height (15 feet) but this time for the furnace Connector
Rise of 3 feet. Read across to 111 , 000 BTU (the next high-
er rating above 105 , 000 BTU) . At the top of this column
a vent connector size of 5 inches is designated for the
furnace connector. See Figure B, above.
(3) The sum of the two ratings is the 140 , 000 BTU. Enter the
Common Vent Table at the same Least Total Height . (15 feet)
and on the "V" line. For a total capacity of 144, 000 BTU,
the column heading directs a 5-inch common vent for this
system. See Figure C, above.
TABLE 7
COMBINED VENT TABLES
VENT CONNECTOR TABLE
MAXIMUM INPUT TO VENT CONNECTOR, 7houraad• of BTU Pw Hour
TOTAL CONNECTOR
N779NT ESE 3" 4" 5" 6" 7" 8"" 10" 12" 14" 16" 18" 20" 22" 247
1' 24 43 Be .98 133 175 272 392 534 698 NO 10% 1320 1570 _
4' 2' 29 51 80 116 158 210 322 414 BOB 712 VA 1229 1480 1760
3' 32 50 90 111 179 232 364 524 680 890 1125 1390 1680 2000
1' 26 48 72 104 142 185 M9 416 577 755 955 1190 1425 1700
6' 2' 31 55 86 124 168 2211 345 496 653 953 1080 1335 1810 1920
3' 35 62 98 139 189 248 386 556 740 967 1225 1510 1830 2180
1' 27 43 76 109 148 194 303 439 Sol SOS 1015 1255 1520 1810
8' 2' 32 57 90 129 175 230 358 518 698 910 1150 1420 1720 21150
3' M 64 101 145 I98 29 402 580 790 1030 INS 1610 1950 2320
1' M 50 M 113 154 200 314 452 642 840 1060 1310 1585 1890
10" 2' 33 51 93 134 112 2M 372 538 730 955 1205 1490 19H 2150
3' 37 87 104 150 205 260 417 600 927 1080 1370 1690 2040 2430
1' 30 53 83 1M 163 214 333 410 697 910 1150 1420 11M M50
15' 2' 35 93 99 142 193 253 394 588 790 1030 1305 1610 1950 MM
3' 40 71 111 ISO 218 M 4" 60 198 1175 1485 1135 MO 2640
1' 31 9 87 125 171 224 347 500 740 965 1225 1510 1630 2190
20' 2' 37 66 104 149 202 265 414 506 $40 1095 1385 1710 2070 2470
3' 42 74 116 163 228 300 466 672 952 1245 1575 1945 2350 2800
1' 33 59 93 134 182 238 372 536 895 1050 1330 1645 1990 2370
30' 2' M 70 110 158 215 282 439 632 910 1190 1500 1855 2240 2670
3' M 79 124 178 242 317 494 712 1035 1350 1710 2110 2550 3040
1' 35 62 97 141 ISO 248 389 560 850 1100 1405 1735 2100 2500
40' 2' 41 73 115 too 225 M5 461 665 961 126
0 1590 1965 2380 2830
3' 49 83 12S 187 253 331 520 748 1100 1435 1820 2240 2710 3230
1' 31 16 114 ISO 214 111 111 900 9M 1210 1530 1890 2280 21M
60' 2' 44 79 1M 178 242 316 494 7612 1050 1370 1749 2150 2590 3000
3' s0 89 138 200 272 355 555 800 1198 I565 1880 2450 1 2960 35M
TABLE 8
COMMON VENT TABLE
MAXIMUM COMBINED INPUT TO EACH SECTION OF COMMON VENT, Thousand, 0 BTU Per Haur
LEAST
TOTAL ONT, --
NB6NT TYPE 3 4"" 5"" 6,. 7'" 8" 10.. 12" 14'. 16" 18" 20" 22" 24"
4' V fib 6e 127 iii 225 355 608 688 7900 1I13355 1400 1445 1660 2020
6 V 65 103 147 zoo 260 410 see 015 1065 ills 166660 1970 23�90
6" V 3 Ill 163 iii Poo 44665 652 912 1190 1510 1860 210M0 2810
10" L 63 98 142 193 250 395 561 865 1130 1430 1765 20% 2540
—
V 79 124 178 242 315 495 712 995 130O 1645 2030 2400 2920
15" L — 73 114 164 224 290 1 460 656 1008 1315 1665 15
60 2431 2960
V 91 144 206 280 365 1 565 825 1158 1510 1910 2360 2790 3100
20' L — 81 127 182 250 325 510 ! 728 1126 1470 1860 2300 2720 3310 --
V in 160 229 310 405 640 916 1290 1690 2140 2640 3120 3800
30' V — 11e 185 266 3360 470 iw 1190255 15327s ISM 2520 ii0 368o 44880
�• L _ 10s 164 236 3M 4M 668 945 1492 1950 2/70 3050 3610 4790 -
V 131 M3 M5 405 525 8M 1180 1715 2240 2830 3500 d150 5050
L _ _ 191 275 374 490 76s 1100 1150 2280 3890 ]570 1270 Soso
60 V — — 249 344 468 612 955 1380 1010 12620 3320 4100 ( 4150 5900
90 L — — _ 1 308 4A 540 { 856 1 1232 1 1950 2550 3230 ! 3900 4720 5750
V 345 524 685 1070 ! I540 2250 1 29M 3110 4590 5420 SSW
L — — — 1 — 153 591 925 i U35 2140 ' 2190 3530 14350 5150 6290
100 V — — — I — 566 I 740 11156 1 1610 2450 1 3M0 ( 4050 5000 5920 1 7200
•For WWiioa a1 L and V,see Paragraph 22.13.5 -
-66-
22 , 14 ELECTRICAL CONNECTIONS . . ,,
I
22. 14. 1 National Electrical Code: All electrical connections
between gas appliances and the building wiring shall conform, at
least , to the National Electrical Code, ASA Cl , 1956. I
22. 14. 2 Electric Ingition and Control Devices : No devices em-
ploying or depending upon an electrical current shall be used to con-
trol or ignite a gas supply if of such a character that failure of
the electrical current could result in the escape of unburned gas or
in failure to reduce the supply of gas under conditions which would
normally result in its reduction unless other means are provided to
-- prevent the development of dangerous temperatures , pressures or the
escape of gas .
-- 22, 14. 3 Electrical Ground: The gas piping shall not be used
as a grounding electrode for an electric fuse panel , telephone cir�
cuit or lightening arrester, nor shall electric circuits utilize gas
piping, casing of controls , panels or other metal parts in lieu of
wiring. This prov'i.sion .shal'l not apply to low voltage control and
ignition circuits , and to electronic flame detection device circuits
incorporated as part of the appliance .
22 . 15 COMPLIANCE WITH ACCEPTED STANDARD
22. 15 . 1 National Standard: All work installed under the Gas
Fitting Section of this Code shall comply to the standards of the
National Board of Fire Underwriters for the installation of gas pip-
ing and gas appliances in buildings as recommended by the National;
Fire Protection Association, a pamphlet normally referred to as
NBFU Pamphlet No, 54, Except where specifically changed by Table
within this Code, all provisions of NBFU Pamphlet No, 54 shall apply
to work installed under this Code.
CHAPTER 23
TRAILER PARK PLUMBING AND DRAINAGE SYSTEMS
23. 1 GENERAL
23. 1 . 1 Adherence to Code: Trailer park plumbing and drainage
systems shall be designed and installed in accordance with the pro-
visions of this Chapter and the installation requirements of this
code.
2.3. 1 . 2 Prohibited Piping Installation: No gas piping, non-metallic
drainage or vent piping, sewage disposal system or parts thereof ,
-- shall be located in any area where a trailer may be parked, or a
cabana, or other structure may be built ,
-_ 23. 1 , 3 Plans and Specifications Required: Before any plumbing
or sewage disposal facilities are installed or altered in any trailer
park, duplicate plans and specifications shall be filed and proper
permits obtained from the City Plumbing Inspection Department . P ans
shall show in detail:
A . Plot plan of park., property lines , driveways , existing or
proposed buildings and the sizes of trailer sites .
B . Complete specification and piping layout of proposed
plumbing system or alteration.
C. Complete specification and layout of proposed sewage dis-
posal system or alteration.
23. 2 DRAINAGE AND VENT INSTALLATION
23. 2 , 1 Drainage Installation: Each trailer site shall be
-67-
provided with .a 3-inch I . P.S . male or female threaded connection ex-
tending above the surrounding grade from a 3 inch, minimum size,
vented ",P" trap, See Figure F, page 71 . Traps shall be located
with .reference to the immediate boundary lines of the designated
space or area within each trailer site that will actually be occup-
ied by the trailer. Each such trap shall be located in the -rear
third quarter section along the left boundary line of the trailer
parking area, See Figure G, Page 72 . Each trap inlet connection
shall be protected at grade by a concrete pad not less than 4 inches
thick and 18 inches square if 900 GJA is used. See Figure B, Page
70 . Concrete pad should be not less than 8 inches thick and 16
inches square if vertical trap inlet is used. See Figure D, Page
70 . No trap shall be more than 24 inches below grade. Each trap
inlet connection shall be effectively capped with a screw type *cap
or plug when not in use.
23, 2, 2 Trailer Drainage Connectors: Connectors from trailer
drain to trap inlet shall be of sanitary semi-rigid pipe installed
so that there is no trap in the connector.
23. 2. 3 Materials : All traps , risers from traps , horizontal
vents and the first, 5 feet from the trap on each trap branch shall
be of materials approved for underground use within a building;
provided, however , .' that approved type non-metallic pipe may be used
for the balance of the system when not under any trailer or any pos
sible future. .building site.
23. 2 , 4 'Wet Vents : Drainage systems may be wet vented as set
forth in this section of the code.
23, 2, 5 Location and Size of Vents: Each wet vehted drainage
system shall be provided with a vent not more than 15 fee.t down-
stream from its upper trap , and long mains shall be provided with
additional relief vents at intervals of not more than 100 feet
thereafter . The minimum size of any vent serving a wet vented sys-
tem shall be not less than 3 inches in• diameter and it need not be
larger than 4 inches in diameter. See Figure C, Page 70 .
23. 2. 6 Prohibited Wet Vents : The drainage system of any
building shall not discharge into a wet vented line. No building,
or house,ssewer 'shall serve as a wet vent .
23. 2 . 7 Vent Supports and Protection: Vents shall be securely
fastened to 4 x 4 redwood post or have equivalent support . Galvaniz-
ed iron or galvanized steel vents may be anchored in a substantial
concrete base and the redwood post eliminated , providing that the
concrete extends not less than 12 inches above the junction with
the cast-iron pipe or fitting. Galvanized vent pipe, steel or iron,
may extend below ground vertically and may directly intersect a
drainage line , providing the entire section around the vent pipe
and drainage line is encased in concrete to prevent movement . Gal-
vanized vent pipe that is to be encased in concrete shall first be
coated with bituminous paint or equivalent protective material .
23. 2. 8 Size and Location of Clean Outs: Cleanouts shall be
provided at the upper end of each horizontal drainage line and at
intervals of not more than 50 feet thereafter. Each cleanout shall
be brought up to grade and made readily accessible. Cleanout fit-
tings shall not be,iless than the size of the pipe except that none
need 'be larger than 4 inches .
23. 2. 9 Pipe Sizes . For the purpose of determining pipe sizes ,
each trailer site connection shall be assigned a waste loading value
of, 6 fixture,- units and each trailer park drainage system shall be
sized as provided in Paragraph 23. 2. 10 .
-68-
i
23. 2. 10 Pipe Sizes for Trailer Park ,Drainage System:
Max. No . Trailers Max. No . Trailers
Individually Vented Wet Vented Size of
System System Drain
2 1 *3'f
30 10 4"
100 50 6"
400 ** 8"
* The maximum length of any 3-inch trap branch is 6 feet from
its vent .
** Will require special design. Consult Plumbing Inspector.
23. 3 WATER DISTRIBUTING SYSTEM
23 . 3. 1 General Requirements : Each trailer park water distribut-
ing system shall conform to the requirements of Chapter 19 and shall
be so designed and maintained as to provide a residual pressure ofj
20 P. S . I . at each trailer site under normal operating conditions .
23. 3. 2 Size of Supply Connection: Each trailer site branch
water supply connection shall be not less than one-half inch inside
diameter,
23. 3. 3 Protection From Cross Connections: An approved combinat-
ion vacuum breaker and check valve shall be installed on the water
supply branch at , or near, the trailer connection. See Figure A ,
Page 70 ,
23. 3. 4 Relief Valves : An approved pressure relief valve shall
_ be installed immediately on the discharge side of each vacuum break-
er and check valve . See Figure A, Page 70 , Each pressure relief
valve shall be equipped with a full size drain with the end of the
pipe not more than 2 feet nor less than 6 inches above ground and
pointing downward. Such drain may terminate at other approved
locations . No part of such drain may be trapped . No shut-off valve
shall be installed between a relief valve and the trailer it serves .
23. 3. 5 Shut-off Valves: A shut-off valve shall be installed
immediately upstream from the combination vacuum breaker and relief
valve. See Figure A, Page 70 .
23. 3. 6 Ditch: Water pipe shall be installed in a separate
ditch from non-metallic drainage pipe or as required in Chapter 19 .
23. 4 INSPECTION
23. 4. 1 Testing: Installations shall. be tested and inspected!
as required by the installation requirements of this code.
23. 5 RESPONSIBILITY
23. 5 . 1 Code Violations: When it is evident that there exists ,
or may exist , a violation of any pertinent regulation, the owner,
lessee , operator, person in charge of the park or any person caus -
ing a violation, shall immediately disconnect the trailer water
supply and sewer connection from the respective park systems and
shall employ such other corrective measures as may be ordered by
the City Plumbing Inspector.
i F
23. 5 . 2 Maintenance: All required devices or safe guards
shall be maintained in good working order. The owner, operator,
lessee or his designated agent shall be responsible for their main-
tenance.
-69-
' TRAILER PARK PLUMBING DETAILS
Spring Loaded „
Cate /Cheek Valve
Valve 1�
Val Relief Valve
,*.Rose Connection
l�
Relief Drain X •`;. i
'z d�(�• Concrete
Pad
.11YR,I Protect Pipe/ ,
IA!, Mid. thru Concrete
Figure B
Figure A
Trailer Coach Sewer Connection
Vent 10 ft.High. 10 ft. Flexible. Sanitary Trailer
4"x 4'poat from Property Line Connection to Permit Sway of
K Trailer Without Damage to
Plumbing
`L•' ij. - Metal Cover
Trailer ParConcrete Ca When Not in
Strap Connection P
Use
C.O. to Grade
Figure D
Allow 6 fixture units
for each Trailer Trap
No Clay Pipe Within 1 ft. - _of Surface
Figure .0
Durham Elbow
Pad .:, . U MC. ;Y.
1-5 Max.ff, Riser 24"
First 5 ft. cast iron pipe
Max. Trap Arm 3" - 6 ft.
Max. Trap Arm 4" - 15 ft.
Figure E
-70-
L TYPICAL WET VENT INSTALLA,-JDN
Conventional system
(Size according to
unit
Keep Vents Not Len
than 10' from property.
i -I line ,
I
C.O.
Relief Vent
�9p� Ever 100'
MAxor)
'hunk Line ,
}" Grade (27.
C.O.
Cleanout
Eve rq 50' Wet Vented Branch
-� 1/8" Grade (1%)
Figure F
i
4" - MAXIMUM TRAP ARM 15 '
3" - MAXIMUM TRAP ARM 6'
MAXIMUM NO. OF TRAPS ON ANY SINGLE BRANCH OF WET VENTED SYSTEM
---------------------------------
3" - Pipe 1 Trap
4" - Pipe 10 Traps
6" - Pipe 50 Traps
{ MAIN VENT FOR 3" BRANCH 3" - PIPE (RELIEF 3")
MAIN VENT FOR 4" BRANCH 3" - PIPE (RELIEF 3")
MAIN VENT FOR 6" BRANCH 4" - PIPE (RELIEF 3")
FOR INDIVIDUALLY VENTED TRAILERS SIZE VENTS AND DRAINS TO HOUSE
PLUMBING STANDARDS
I�
I
-71-
TRAILER COURT DETAILS`"
All Trailer Space Must Be Shown And
Boundary Lines Approved Before Locating Plumbing
Front of Trailer Site
Trailer
First Quarter
of Trailer
Second Quarter
of Trailer
.Keep Trap 1' to
3' from this line Third Quarter
of Trailer
And 1' Min. from
:'railer Wheel
Fourth Quarter
of Trailer
5' Min. This Distance
Varies .
Rear of Space
Figure G
-72-
i
CHAPTER 24 ,
INDIVIDUAL SEWAGE DISPOSAL SYSTEM
24. 1 GENERAL: Provision of adequate and safe sewage disposal facil-
ities in areas with no community sewerage system can be a difficult
problem. Proper disposal of human excreta in such areas is a major
factor influencing the health of individuals . The following sections
of the Texas General Sanitation Law of 1945 (Article 4477-1 , Vernon' s
Annotated Civil Statutes) are concerned with the treatment and dis-
posal of domestic sewage.
"Sec. 4. (b) No kitchen waste, laundry waste, or sewage shall be
allowed to accumulate, discharge or flow into any public place, gut-
ter, street , or highway .
i
"Sec . 5 . (a) All human excreta in populous areas must be disposed
of through properly managed sewers , treatment tanks , chemical toillets ,
approved privies , or by other methods approved by the State Depart-
went of Health. The disposal system shall be sufficient to prevent
the pollution of surface soil , the contamination of any drinking
water supply, the infection of any flies , cockroaches , or the crea-
tion of any other nuisance.
"Sec. 5. (b) All effluent from a septic tank hereafter constrluct-
ed shall be disposed of through a subsurface drainage field designed
in accordance with good public health engineering practice or ani other
method which does not create a nuisance .
. In general , the mass use of individual wells for water supply
and septic tanks for sewage disposal in suburban developments has
usually created health problems and is , therefore, an undesirable
practice. The modern sewage collection system and central treatment
plant provides the most economical , trouble-free and effective method
yet devised for the disposal of domestic sewage. For most unsewered,
non-urban areas , a septic tank and soil absorption system may bei
used instead.
Detailed technical information concerning any phase of house-
' hold sewage disposal may be. obtained upon request from the Division
of Sanitary Engineering, Texas State Department of Health, Austin,
Texas .
24. 2 SITE CONSIDERATIONS: The builder should first decide whether
a septic tank and soil absorption system will work in his particular
case. In general , the proposed site for the septic tank and absorp-
tion system must be located a safe distance from water wells , streams ,
etc . , and soil conditions must be suitable. Further, the site must
not be in an area subject to flooding, and topography should permit
gravity flow through the entire process .
TABLE 1
_ Minimum Safe Distance in Feet
Vitrified
Soil Cast- Clay Pipe
Septic Absorption Iron With Wate -
From To Tank System Sewers Tight Jo is
Water Wells , Cisterns
and Pump Suction Pipes 50 150 10 50
Streams and Ponds 50 50 -- 50
_ Foundation Walls of
j Structures 5 15 -- --
Property Lines 10 10 -- --
-7 3-
Some subsurface exploration and testing will probably be neces -
sary . to determine suitability of the soil at the proposed site. Two
conditions must exist:
1 . The average percolation time (see "Percolation Test" in
Chapter 24. 4) should be within the range specified in Table
IV, page 77 .
2. Impervious strata should be at least four feet below the
bottom of the soil absorption system, and the maximum ele-
vation of the groundwater table should be at least four
feet below ground surface.
24. 3 DESIGN AND CONSTRUCTION
24. 3. 1 House Sewer: The line from the house plumbing system
to the septic tank should be constructed of structurally sound pipe
such as cast iron, vitrified clay , or concrete. Cast iron pipe
should be used under driveways . The pipe should have a minimum in-
side diameter of four inches and be laid in a straight line at a grade
of not less than one-fourth inch fall per foot of pipe. The material
used to seal the pipe joints should effectively prevent leakage and
entry of roots at the joints .
24, 3. 2 Septic Tank: A properly-designed septic tank will be
watertight and will hold all sewage from the home for about a two-
day period, in which time gravitational force will cause the set-
tling out of most of the sewage solids . The solids , which slowly
accumulate in the tank bottom, will then undergo a rotting process
and in a few months become more stable chemically . Periodically,
the tank will become filled with solids and require emptying. As
additional sewage is introduced into the tank, the original settled
liquid is displaced and overflows into the subsurface absorption
field.
It is very important that the septic tank be made big enough.
Probably the best method of estimating sewage loading is based upon
the number of bedrooms in the house to be served. The addition
of ground-up garbage solids will also have a significant bearing
upon required tank capacity. Table II should be used to determine
the required minimum septic tank liquid capacity.
TABLE II
Septic Tank Minimum Liquid Capacity
Septic Tank Capacity (Gallons)
No . of Bedrooms A B
2 or less 500 750 _
3 600 900
4 800 1 , 000
For each additional 200 250
A . Without garbage grinder or automatic washer.
B. With garbage grinder and/or automatic washer.
The flow line of the inlet pipe should be three inches higher
than the operating tank liquid level (which is determined by the
flow line of the outlet pipe) to assure rapid drainage of house
Plumbing. Liquid penetration of the inlet device should be at least
six inches but never greater than that of the outlet device . Liquid
penetration of the outlet device should be approximately forty per-
cent of the tank liquid depth.
11T" branches are recommended for inlet and outlet devices be-
cause they provide a means for venting decomposition gases from the
-74-
I 1 , •
tank and absorption system- through the house plumbing• Otherwise ,
the gases will probably leak ,from around the lid and cause an odor
nuisance in the vicinity of the septic tank. "T" branches also
offer ready access for maintenance . To prevent escape of scum and
floating ,solids from the tank, the open spaces between the tops of
the inlet and outlet devices and the underside of the tank lid
should not be greater than approximately two inches .
For rectangular tanks built according to suggested dimensions
given in Table III , the proper liquid penetration and riser height
of the inlet and outlet devices will be provided if standard four-
inch vitrified clay "T" branches --or equivalent fittings of the
` same dimensions--are used. It is recommended , however, that the
barrel of the inlet device be shortened to give a liquid penetrat-
ion of six inches . (See Fig. 1)
A properly designed single compartment tank will give accep- '
table performance . Recent research data indicates that two tanks
in 'series or a two-compartment tank, with approximately one-half
to two-thirds of the total volume in the first compartment , will
provide an extra degree of solids removal , which is especially
valuable under poor soil conditions . The second tank or compart-
ment should have inlet and outlet devices designed the same as for
a single-compartment tank, except that the elevation, or flow line ,
of both inlet and outlet devices in the second unit should be thel
same as the outlet device in the first unit . Means of entry should
be provided to each compartment for inspection, cleaning and main
tenance. Both the inlet and outlet devices should be accessible
for inspection and maintenance without having to enter the septic
tank. For tanks not buried too deeply, the use of sectional slab
cowers will conveniently and safely provide the needed access . For
tanks buried deeply „ manholes with risers are recommended .
The septic tank should be of sturdy , water-tight construction,
Materials used may be concrete (reinforced poured in place or p'rei
cast) , or tile with concrete base and cover, or metal . Metal tanks
shall be plainly marked that they meet U. S . Dept , of Commerce Com-
mercial Standard CS 177-62 .
24 . 3. 3 Soil Absorption System: Liquid discharging from a
_ septic tank requires • further treatment to render it safe and
chemically stable. A well -designed sub-surface soil absorption
system will allow these liquids to seep away into the ground at a
slow rate without creating a health hazard or nuisance. After the
prospective builder has picked out a suitable area, with the con-
sideration of safe distances and topography in mind , he should
then determine whether soil formations in the chosen area will al-
low the soil absorption system to work. (See page 78 concerning
how to determine suitability of the soil at a particular site. )
Where the topography , or ground slope , is not too steep , a
flat or level system of gravel-filled trenches is recommended. The
use of a loop trench will avoid dead ends and assure maximum ef-
fective utilization of all portions of the system. The capacity
of any particular absorption system is fixed by the total area of
trench bottom built into the system. The amount of this required
minimum area will depend upon the expected sewage load (number of
bedrooms) and the average soil percolation time. The soil per-
colation time may be determined by performing a percolation test
as recommended in Paragraph 24• 4. 5 .
-75-
"A" T
6"
Figure 1 . SAngle Compartment Septic Tank
TABLE III
Suggested Dimensions For Rectangular Tanks
Tank
Capacity Inside Inside Inside "A"
(Gallons) Width Length Depth (Refer to Fig. 1)
500 3' -0,, 61 -0" 41 -9" 9., 12"
750 3' -6" 7' -6" 4' -10" 9" 12"
900 3' -6" 7 ' -6" 5' -7" 8" 12"
Figure 2. Two Septic Tanks In Series . Cross section.
4" TILE LINE FOR EFFLUENT DISTRIBUTION
NOTE COVER OF TAR PAPER STRIP FOR -
JOINT PROTECTION
"EARTH �' �� ' EARTH ' 6" MIN.
BACKFILL BACKFILL I _ 12" MAX,
a _ e
6" 1 GRAVEL �LRAVEL e v o°
T— CROSS SECTION SIDE VIEW
Figure 3. Details of Soil Absorption Trench Construction.
-76-
HOUSE SOIL ABSORPTION FIELD
SEPTIC r--------- ---- -
TANK --------------- --
AERIAL VIEW
Figure 4. Typical Lay-out For Level Ground
I
TABLE IV
Minimum Required Trench Per Bedroom
Average Required Trench Total Trench Length (Feet)-
, Percolation Rate Bottom Area for Specified Trench Widths
(Minute per Inch) (Square Feet) 18" 24" 30" 36"
1 .85 57 43 34 29
3 100 67 50 40 34
4 115 77 58 46 39
5 125 84 63 50 1 42
10 165 110 83 66 55
15 190 127 95 76 64
30 250 167 125 100 84
45 300 200 150 120 100
60 330 220 165 132 110
Over 60 Unsuitable for soil absorption systems
Notes: 1. A minimum sized installation should be designed on the basis
of a two-bedroom house, i. e, double the minimum areal re-
- quirement as given in Table IV.
2. Table IV provides for the normal household appliances , in-
cluding automatic sequence washer, mechanical garbage grind-
er and dishwasher.
All parts of the trench bottom should be at the. same elevation,
with a permissible variation in total trench depth of a minimum eight-
een inches to a maximum of twenty-four inches . Permissible variations
in trench widths range from a minimum of approximately eighteen inches
to a maximum of thirty-six inches . Minimum recommended spacing be-
tween 'adjacent edges of parallel trenches is approximately' five feet.
Liquid from the septic tank is conducted to the absorption system via
a water-tight line similar to the house sewer. The liquid is distri-
buted uniformly through the gravel-filled trenches by a pipeline of
four inch farm drain tile or equivalent materials . It is recommended
that the distribution piping be laid level in the trenches , with a
minimum of six inches gravel depth under the pipe and a two-inch
gravel cover. Thus , a total gravel depth of approximately twelve
inches would be required. To avoid root troubles , an additional
six inches of gravel should be provided underneath the distribution
tile within ten feet of trees or large shrubs . The filtering media
I
_77-
may be clean, graded gravel , broken brick, washed rock, or similar
aggregate and may range in size from one-half to two and one-half
inches . Pipe joints of the distribution line , preferably twelve
inch lengths , are laid with small gaps (the thickness of a pencil or _
less) between joints to allow the slow escape of the liquid. Cover-
ing the top half of the distribution pipeline with lengths of tar-
paper or equivalent material is recommended to prevent the entry of
fine materials into the openings between joints . A covering of
straw, hay, tarpaper, or similar material over the top of the gravel
is, also recommended to prevent the soil backfill from invading the
gravel until the backfill becomes stabilized.
Where the topography, or ground slope , is too steep for feasible
construction of a closed-loop trench system, the following alternate
layout may be used. A single, level trench, constructed like the
closed-loop trench, is built along a contour, and the overflow from
this line is conducted via a water-tight line to the next lower
level , where a second trench can be built along a contour similar to
the upper trench. The pattern can be repeated until the required
minimum trench bottom area has been provided. It is recommended that
no individual trench exceed one hundred feet in length.
Poor construction practices will cause serious damage to the
soil absorption system. It is , therefore , extremely important that
care be taken to avoid sealing the surface on the bottom and sides
of the absorption trenches through smearing. Trenches should not
be excavated when the soil is wet enough to smear or compact easily.
Open trenches should be protected from surface runoff , and if it is
necessary to walk on a trench, use a temporary board on the bottom
to reduce the damage. All smeared or compacted surfaces should be
naked to a depth of one inch and loose material removed just be-
fore the gravel or other media is laid.
The top of a new absorption trench should be hand-tamped and
over-filled with about four to six inches or earth to prevent later
settling below grade, Automobiles or heavy machinery will crush the
distribution tile and should be excluded from the area unless spec-
ial provisions are made to support the extra weight .
24. 4 PERCOLATION TEST
24. 4. 1 Number and Location of Tests: Six or more tests shall
be made in separate test holes spaced uniformly over the proposed
absorption field site.
24,.4, 2 Type of Test Hole: Dig or bore a hole, with horizon-
tal dimensions of from four to twelve inches and vertical aide's 'to
the depth of the proposed absorption trench.
24. 4. 3 Preparation of Test Hole: Carefully scratch the bottom
and sides of the hole with a ;knife blade or sharp-pointed instrument
in order to remove any smeared soil surfaces and to provide a nat-
ural soil interface into which water may percolate. Remove all
loose material from the hole. Add two inches of coarse sand or
fine gravel to protect the bottom from scouring and sediment .
24. 4. 4 Saturation and Swelling of the Soil: It is important
to distinguish between saturation and swelling. Saturation means
that the void spaces between soil particles are full of water.
This can be accomplished in a short period of time. Swelling is -
caused by intrusion of water into the individual soil particle.
This is a slow process , especially in clay-type soil , and is the
reason for requiring a prolonged soaking period.
In the conduct of the test , carefully fill the hole with clear
water to a minimum depth of twelve inches over the gravel . In most
soils , it is necessary to refill the hole by supplying a surplus
reservoir of water, possibly by means of an automatic syphon, to
keep water in the hole for at least four hours and preferably over-
night . Determine the percolation rate twenty-four hours after water
-78-
Fig. 5. Septic-Tank System
for Sloping Ground
I
.1 1 .r
Il
o •
i
1
is first added to the hole. This procedure is to insure that the
soil is given ample opportunity to swell and to approach the condi-
tion it will be in during the wettest season of the year. Thus ,
the test will give comparable results in the same soil , whetherl
made in a dry or in a wet season. In sandy. soils containing little
or no clay, the swelling procedure is not essential , and the test
may be made as described under Paragraph 24. 4. 5C, after the water
from one filling of the hole has completely seeped away .
24.4. 5 Percolation-rate Measurement: With the exception of
sandy soils , percolation-rate measurements shall be made on the
day following the procedure described under Paragraph 24. 4. 4.
A. If water remains in the test hole after the overnight
swelling period, adjust the depth to approximately six inches over
the gravel . From a fixed reference point , measure the drop in l
j water level over a thirty-minute period. This drop is used to
calculate the percolation rate.
B. I£ no water remains in the hole after the overnight swell-
ing period, add clear water to bring the depth of water in the hole
to approximately six inches over the gravel . From a fixed reference
i
'JI -7 9-
point ,' measure the drop in water level at approximately thirty-minute
intervals for four hours , refilling six inches over the gravel as
necessary. The drop that occurs during the final thirty-minute per-
iod is used to calculate the percolation rate. The drops during
prior periods provide information for possible modification of the
procedure to suit local circumstances .
C. In sandy soils (or other soils in which the first six
inches of water seep, away in less than thirty minutes , after the
overnight swelling period) , the time interval between measurements
shall be taken at ten minutes and the test run for one hour. The
drop that occurs during the final ten minutes is used to calculate
the percolation rate.
24. 5 MAINTENANCE OF SEPTIC TANKS: Septic tanks should be cleaned
before too great a volume of settled sewage solids accumulate. If
either the deposited solids or floating scum layer approaches too
closely to the bottom of the outlet device, particles will be scour-
ed into the soil absorption system. If this condition is allowed
to continue , the solids will eventally clog and ruin the absorption
system. Construction of a new absorption system is usually neces-
sary in such a case.
A tank which receives normal loading should be inspected at
yearly intervals to determine if it needs emptying. Experience for
a particular system will indicate the desirability of longer or
shorter intervals between inspections . A long stick wrapped with
rough, white toweling and lowered to the bottom of the tank will
show the depth of solids and the liquid depth of the tank. The
stick should be small enough in diameter so it can be lowered through
the outlet device to avoid scum particles . After several minutes ,
if the stick is carefully removed, the height to which the solids
have built up can be distinguished by black particles clinging to
the toweling. It is recommended that the tank be emptied when the
solids level has built up to approximately twelve inches from the
bottom of the outlet device. Professional septic tank cleaners ,
with tank trucks and pumping equipment , are located in, most large
communities and can be hired to perform this service. In any case,
the contents of the septic tank may contain disease-causing organisms
and should be disposed of in a manner that is acceptable to local
health authorities .
Immediate replacement of broken-off inlet or outlet fittings
in the septic tank is essential for effective operation of the sys -
tem.
CHAPTER 25
INDIVIDUAL WATER SUPPLIES
25 . 1 GENERAL: Suitable water for drinking purposes seldom occurs
in nature. Rain and snow waters become contaminated quickly by
dust , insects , animals and man. Some of the organisms introduced
into water by these means cause typhoid fever, paratyphoid fever,
bacillary and amoebic dysentery. The organisms causing these dis -
eases are excreted in human discharges and if defective excreta
disposal methods or a lack of safeguards around the water source
allow the organisms to reach water supplies , human illness will
result .
In order that we may free ourselves of these dread diseases ,
certain safeguards must be provided. We cannot depend on the
Physical appearance of water as a measure of safety for it is pos -
sible that clear and sparkling waters may be unsafe. For complete
satisfaction, the water supply should be safe, pleasant to taste,
clear and free of gases and minerals that impart disagreeable
odors . Too , a good water supply is one that is adequate for needs ,
dependable and convenient . A minimum of approximately 50 gallons
of water per person per day - .is required in those homes with complete
it
-s0-
plumbing facilities . In homes not equipped with plumbing, the
water demand may decrease to about 10 gallons per person per day .
Of course, if stock or irrigation water is to be provided from the
household supply , additional allowances must be made. Table I
j gives water usage information that will be applicable in most farm
' and suburban areas .
Detailed technical information concerning any phase of water
supply or treatment may be obtained upon request from the Division
of Sanitary Engineering, Texas State Department of Health, Austin,
Texas .
TABLE I
Use Water Consumption per Day ;
Household - (hot and cold running
water , kitchen, laundry
bath, etc. ) . . . . . . . . . . . . . 50 gal . per person
Livestock -
Dairy cows (drinking only) . . . . . . . . . 15 gal . per head
Dairy cows (drinking and servicing) , 35 gal . per head
Beef cattle, horses and mules . . . . . . 12 gal . per head
Hogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 gal . per head
Sheep. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 gal . per head
Chickens (layers and broilers) . . . . . 4-6 gal . per 100 birds
Turkeys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-18 gal . per 100 birds
- Other Uses -
Dairy utensil washing. . . . . . . . . . . . . . 30-50 gal .
Flushing dairy barn. . . . . . . . . . . . . . . . 30-50 gal .
Sanitary hog wallow. . . . . . . . . . . . . . . . 100-400 gal .
Garden watering, 1 inch hose. . . . . . . 625 gal . per 1 , 000 sq. ft
25 . 2 THE LOCATION OF WELLS : While the determination of a safe dis-
tance between ground water supplies and a possible source of con-
tamination is dependent on many factors , to safeguard your well
from possible sources of contamination such as stock and poultry
yards , privies , septic tanks , absorption fields , etc . , it is re-
commended that the well be located at least 150 feet from such
sources of contamination. If local conditions will not permit a
distance of 150 feet between the well and the entire septic tank
system, the watertight septic tank should be installed at least
50 feet from the well and an effluent line of tight joints should
be laid so that no part of the open jointed absorption field will
,- be located within 150 feet of the well . It is also recommended
that the well be located so that flooding and the entrance of sur-
face water are prevented. For existing wells located less than )
150 feet from possible sources of contamination, the construction
of diversion ditches or levees between the Well and potential
sources of contamination might be considered.
Water producing formations located less than 10 feet from the
original ground surface should be considered potentially unsafe
and should not be utilized as a domestic water supply . Deeper
r wells drawing water from rock formations , such as limestone that
are creviced or channeled; should also be regarded with suspicion
until several analyses have demonstrated that the water is free )
from contamination. Even then, occasional analyses should be made
because polluted water may travel long distances through crevices
or underground channels without being purified.
I
-81-
25 . 3 WELL CONSTRUCTION , .
25. 3. 1 Dug Well- The shallow dug well constructed with hand
tools is only deep enough to reach shallow ground water:, This type
of well generally furnishes comparatively little water, and it is
difficult to maintain so as to assure a clear and safe water supply.
To be protected from surface contamination, a dug well must be pro-
vided with a watertight casing and a concrete. cover. The casing or
curbing for dug wells is usually constructed of stone, brick, the
or metal . No matter what the choice of materials may be, it is `
recommended that the upper 10 feet of the casing or curbing be- eh-
closed with reinforced concrete 6 inches in thickness . A banitary
pump should be Installed to draw the water, and surface drainage
should be such that surface waters are diverted from the well .
Figure 2 illustrates a properly constructed dug .well .
WELL
HOUSE
.� t W
SEA TIC —
1
1
1
BARN
1 1 1 PEN&ADSORkOM
1
1 1 I -
� 1 I
1 1 I
Figure '1 . PROPERLY LOCATED WELL
-82-
PUMP
PUMP RODS
1,
d"�
SLEEVE
SLOPE 1
i l 2
ACCESS PER FOOT
FOR
CHLORINE 4,GASKET
yob •�•.
I
'i • / •q REINFORCED
ONCRETE
p A &" THICK
10 FEET
MORTARED &RICK
• . i
JC . j •.
4. ' A
Y
UNMORTAR
&RICK
�ORMATION` '.i.� •''•
-I Figure 2, PROTECTED DUG WELL
25. 3. 2 Drilled Well: Drilled wells are deep enough to reach
a more plentiful and more reliable water supply. A casing of steel
or other approved material should be placed in a drilled well to
prevent caving of the formations penetrated and also to insure pro-
tection of the water supply from contamination by water from shallow
s-trata. To .secure maximum protection against possible contamination,
the well should be cased from the top of the water producing forma-
tion to at least 18 inches -above the elevation of the concrete sur-
face slab or finished floor of the well house. The casing should
also extend at least ,1 inch above the top of the foundation upon )
which the pump or motor is mounted. It is also desirable to have
the well casing pressure cemented from the top of the water form_.
tion to the earth' s surface; at- least, a mixture of watertight
concrete should be placed around the upper 10 feet of the casing,
-83-
or deeper if necess,L, to exclude water from s1' , Low formations as
illustrated in Figure 3. The drilled well should also be provided
with a cover sloped away from the casing.
CONCRETE
SLAB 6' DIA.
GASKET
SCR ENED VENT ■
AND CHLORINATION „ ASPHALTIC SLOPE
ACCESS I SEAL PER FOOT
/ 10 FEET A• da ?REINFORCED CONCRETE
I�IdaIMUM
c ,P
I I
e—o
-
I
0 i 4 I
0 o I v
' . ` o
•�. r
7
WATER
FORMATION
Figure 3. PROTECTED DRILLED WELL
25. 3. 3 Bored Well: Bored wells may be constructed with the aid
of hand or machine driven augers . Casings of tile, metal or other
suitable material should be provided in the excavation and extended
from the earth' s surface to the water stratum to be developed.
Similar to dug wells , bored wells do not tap deep sources of water.
and are, therefore, subject _to the same difficulties of providing
relatively large yields , and they may be affected considerably dur-
ing periods of drought .
25, 3. 4 Driven Wells: A driven well is constructed by driving
r
a pipe fitted with a well point with a pile or other driving device.
Such installations are limited to localities where water-bearing A
sands lie at comparatively shallow depths and where the water sands
-84- — -
� y
1 are not located below layers of rock which would prohibit the driv-
ing of the pipe.
_ 25 . 4 ABANDONMENT OF {YELLS : Permanently abandoned wells should be
1 filled with suitable materials to protect the water-bearing forma-
tions from contamination. Wells may be deemed satisfactorily filled
when: (1) Drilled or cased wells are filled completely with cement
grout , concrete or clean puddled clay , (2) Dug or bored wells are
filled completely with puddled clay or its equal after as much as
possible of the curbing is removed. This procedure should be car-
ried out whether or not a new well is to be constructed nearby.
Abandoned wells should never be used for the disposal of sewage,
septic tank effluents or other wastes .
25 . 5 SUGGESTED CHLORINATION ACCESS FOR WELLS: It sometimes becomes
necessary to disinfect wells . In order that the protective seal
need not .be, broken for introduction of chlorine compounds , it is
suggeste"\ liat a pipe be installed through the well seal to provide
an access for chlorination. This pipe should either be capped or
raised and equipped with an elbow turned downward and screened or
capped .
25 . 6 DISINFECTION OF WATER SUPPLIES: New wells and equipment ,become
contaminated during construction and installation. Also, existing
wells that have been opened for repair are subject to contamination
from tools , dust , soil , hands , etc. Certainly any water supply that
has been tested bacteriologically and found unsafe should not be !
used until disinfection is completed . However , it is not wise to -
assume that water will be indefinitely safe even after disinfection.
For this reason, construction and location defects should be remov-
ed prior to disinfecting an existing well , and periodic samples should
be submitted for bacteriological analysis after disinfection has
been carried out .
An effective and economical method of well disinfection is the
introduction of a chlorine solution into the well and circulating)
it through the system. The amount of chlorine to use in disinfection
will depend on the amount of water in the well or tank and the con-
dition or chlorine demand of that water. The following table enables
a rapid calculation of water volume in your well or cylindrical tank.
TABLE II
-� DIAMETER OF WELL
Depth of
water in (Gallons)
well or Drilled Well , Gallons Dug Well or Cylindrical CisteIrn
tank (ft) 4 in. 6 in. 8 in. 3 ft . 4 ft . 5 ft . 6 ift .
!
11 12 22 53 94 147 212
2 ly 3 5 106 188 394 424
3 2 42 72 159 282 441 636
4 �- 6 10 212 376 588 848
5 34 7 i 121 265 470 735 10,60
7 4p 10? 17 371 658 1029 1484
8 5 12 20 424 752 1176 1696
9 64- 132 222 477 846 1323 1908
10 61
15 25 530 940 1470 2120
11 72 162 272 583 1034 1617 2332
12 8 18 30 636 1128 1764 2544
I
t- Example: A dug well 5 feet in diameter and containing 7 feet oflwater
would contain 1029 gallons of water.
The capacity of a rectangular well , box or tank is found by
multiplying the length by the width by the height , all in feet , then
multiplying'by " 72; This will give the total gallonage. _
-85-
Ch'lotine compounds in powder, solution and tablet form are avail-
able at most drug, feed and grocery stores . The chlorine concentra-
tion is usually designated on the label of each product in terms of
the percentage of " available chlorine." Laundry bleaches , sanitizers
acceptable for utensil sterilization in the dairy and food industr- .
ies and chlorine products recognized for water sterilization are all
acceptable for use in treating individual water supplies . Local
health officials and municipal water plant operators will be happy _
to offer advice concerning suitable chlorine compounds .
CHAPTER 26
26 . 1 PROHIBITING WORK WITHOUT A PERMIT: No person, firm or corp-
oration or other entity shall install or perform any plumbing work
as defined in this Code without first having secured a permit in
accordance with the provisions of this Code.
26. 2 PROHIBITING USE OF UNTESTED INSTALLATIONS: No person, firm
corporation or other entity shall cause or permit any plumbing in-
stallation to be connected with the City water or sewer system or _
to any gas '.distiibuting system nor shall such person, firm, corp-
oration or other entity use or permit the use of any such plumbing
installation, or cause or permit any water, sewage or gas to flow
through the same before it has been inspected and approved as here-
in provided.
26 . 3 PENALTIES : Any person, either by himself or agent , and any
firm, corporation or other entity who violates any of the provisions
of this Code shall be deemed guilty of a misdemeanor and, upon con-
viction of any such violation, shall be fined in any sum not to ex-
ceed ONE HUNDRED DOLLARS ($100 .00) ; and each day during which such
violation continues shall constitute a separate and distinct offense.
In any case of a violation of any of the terms or provisions of this
ordinance by any corporation, the officers and agents actively in
charge of the business of such corporation shall be subject to the
penalty herein provided. Any offense defined herein which has been
defined by laws of the State of Texas as an offense and for which
penalty has been prescribed shall be punished as provided in said
State Law, and nothing herein shall be held as fixing any penalty
contrary to a penalty provided by the laws of the State of Texas .
26. 4 FORM OF COMPLAINTS • In any prosecution hereunder, it shall
not be necessary for the complaint to negative any exceptions con-
tained in this Code concerning any prohibited act, but any such ex-
ception may be urged as a defense by any person charged by such com-
plaint .
26. 5 RESPONSIBILITY FOR DEFECTS UNCHANGED: This Code does not
relieve from or lessen the responsibility or liability of any per-
son owning, operating, controlling, or installing any plumbing,
gas piping or gas -fired appliances , for damages to person or property
caused by any defect therein, nor shall the City be regarded as as-
suming any such liability by reason of the inspection authorized
herein or certificate of approval issued as herein provided.
26. 6 SEVERABILITY CLAUSE: If any provision of this Code , or the
application thereof to any person or circumstances , is held in-
valid, the remainder of the Code, and the application of such pro-
vision to other persons or circumstances , shall not be affected
thereby.
26. 7 REPEALING CLAUSE: All ordinances or parts of ordinances in
conflict herewith are hereby repealed.
HQB T
e€ ,
ilfa9'cr
-86-
r'
PASSED and APPROVED on First reading this /��day of,�,
A. D. , 1966.
PASSED and APPROVED on Second reading this S� day of
A. D. , 1966. (/ p
PASSED and APPROVED on Third reading this ��day of
A. D. , 1966.
MAYOR
01
CIT SECRETARY
I
i
I
%Z
• INDEX Y/
Page
ACID
Vent Pipe Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 .
ADMINISTRATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
AIR GAP
Provision For. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Swimming Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
APPEALS AND ADVISORY BOARD
Duties and Powers of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.
Election and Adoption of Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Organization of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
APPLIANCE
And Equipment Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Connections Prohibited. . . . . . . . . . . . . . . . . . . . . . . . . . . . 571
Gas Consumption of.. ... . . . . . . . . . . . . . . . . . . . . . . . 561
Listed, and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 571
Stoves and Other . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
BACKWATERVALVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
BAR AND SODA FOUNTAIN SINK
Wastes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
BONDING PROVISION
Bond Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
BUILDING
Drains and Sewer Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Existing (Code Deviation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Sewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Sewer Required . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . l
--
CATCH BASINS. i
Sizes of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
When Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
CENTRAL HEATI.NG BOILERS AND FURNACES
Clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Piping of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Shut Off Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CHANGE OF DIRECTION 1
Drainage Fittings For. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Drainage Fitting Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CIRCUIT VENTING
Battery of Fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Connections of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . 51
Pipe Sizes For. .. . . . . . . . . . . . . . . . . . . . . . . . 5.
CLEANOUTS 28
Base of Stacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Building Sewer. . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2I8
Change of Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
Concealed -Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Location' of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
Prohibited Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
r
Page
COMBUSTION AIR
Details of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
COMMON VENT, Sanitary
Defined. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Typical Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
COMMON VENT, Gas
Appliance
Determining Size of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Illustrations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Minimum Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . E5
Table of Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
COMPLAINTS
Form of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
CONFORMANCEWITH CODE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
CROSS CONNECTIONS -
Approval of Preventive Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Provision for Air Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
DISPOSALS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
DISTANCE
Trap to Fixture. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26, 27
Trap to Vent Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44•
DRAINAGE
Building Sewer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fixture Branches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 37
Stack Loading. . . . . . . . . . . . . . . 6 . . . . . . . . . . . . . . . . . . . . . . . . , . . . 41
Table of Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
DRINKING FOUNTAINS
Design and Installation. . 32
Protection of Water Supply. . . . . . . . . . . . . . . . . . . . . . . . . . .,. . . . . 32
DUCT FURNACES
Circulating Air. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 . . . . . . . . . . . . . . . . 61
Erection of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Piping of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
DUTIESOF INSPECTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
EXEMPTED ACTIVITY
And Appliance Work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .12 ,
Exemptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Home Owners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance, Utility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
FEES
Permit and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Table of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16, 17
v
Page
i
FITTINGS
Sanitary
For Change in Direction. . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Prohibited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
FIXTURES
i Back-to-Back. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . 43
Dishwashers , Residential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Drinking Fountains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Food Waste Grinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Prohibited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Quality of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Showers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Special. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Standards for. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table of Horizontal Branches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Traps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . 271
Trap Vents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
i
Unit Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . 38.
Unit Value Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39.
Urinals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31•
Water Closets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31'
FLASHINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
FLOORFURNACES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Furnaces
GASPLUMBING, NATURAL. . . . . . . . . . . . . . . . . . . . . . . . See Plumbing
GARBAGEDISPOSERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
HANGERS AND SUPPORTS
For Horizontal Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
_ For Vertical Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . 32
INDIRECT WASTE PIPING AND SPECIAL WASTES . . . . . . . . .. . . . . . . . . . . . 33
INDIVIDUALFIXTURE RE-VENTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
INDIVIDUAL SEWAGE DISPOSAL
Design and Construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
DetailSloping Ground System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
General. . . . . . . . . . . . . . . . . . . . . . . . . . . 73
_ Minimum Capacity Septic Tank. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Percolation Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Safe Distance Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Septic Tank Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Site Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Soil Absorption System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Trench Required Per Bedroom. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
INDIVIDUAL WATER SUPPLIES
Capacity of Wells , Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . --
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Location of Wells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Protected Drilled Well , Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Protected Dug Well , Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Table of Consumption. , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Well Construction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
INSPECTION
And Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Whey Acquired. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
♦ a a
Page
INSPECTOR, Plumbing (See Plumbing Inspector)
INTENT AND PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INTERCEPTORS
Accessibility of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
And Backwater Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
And Separators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Residential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Venting of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
When Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
JOINTS
And Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Asbestos Cement Pipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Bitumenized Fiber Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Cal'ked. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Cement Mortar. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Elastomeric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Flar'ed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . ` 25
HotPoured . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 --
Plastic Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Solder or Sweat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Threaded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Types of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Wiped . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
LIABILITY OF INSPECTOR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14.
LICENSING REQUIREMENT
Exemptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Plumbing License Required . . . . . . . . . . .'. . . . . . . . . . . . . . . . . . . . . . 12
LISTED APPLIANCES AND ACCESSORIES '
Permissible Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Pressure Regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Type of Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
LOOP AND CIRCUIT VENTING
Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Fixtures Back-to-Back in Battery. . . . . . . . . . . . . . . . . . . . . . . . . . 51
Pipe Sizes For. . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . . . . . . . . . . 52
Vent Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
MATERIALS
AndUses Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 23„ 24
Minimum Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,
Not Listed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Use of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PENALTY
And Closing Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 86
Penalties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
86
Prohibiting Work Without A Permit . . . . . . . . . . . . . . . . . . . . . . . . . 86
Responsibility For Defects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
PERMITS
And Inspection Fees Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Duration of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
False Statement or Bad Faith. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fees and Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Issuance of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
I
V N
V • l . l
1- Page
PERMITS (Cont)
Not Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Non Transferable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
' I Persons Who May Obtain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
R'equired. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Special. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
PIPE CLEANOUTS (Also See Cleanouts) . . . . . . . . . . . . . . . . . . . . . . . . . . 28
PIPINGAFFECTED BY THIS ORDINANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PLASTIC PIPE
Installation• of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Standards For. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PLUMBING FIXTURES (See Fixtures)
PLUMBING INSPECTOR
Authority of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
_ Duties of. . . . . . . . . . . . . . . . . 13
Liability of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Powers of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . a . . . 13
Prohibited Interests. . 13
PRESSURE REGULATORS
Natural Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Venting Requirements For. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
PROHIBITED FITTINGS AND CONNECTIONS (See Fittings)
PROHIBITED FIXTURES AND CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 30
PROTECTION OF POTABLE WATER SUPPLY
Approval of Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Cross Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Fixtures With Hose Attachments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Flushing Tanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Lawn Sprinklers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Private Water Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Provision For Air Gap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Selection of Materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Separation From Drain and Sewer. . . . . . . . . . . . . . 36
Swimming Pools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3�
Underground Stop and Waste. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Used Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Vacuum Breakers and Air Gaps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
When Separation Not Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
RAT PROOFING
Exterior Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Interior Openings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
REGULATIONS
General , Gas Plumbing. . i 53
General , Individual Sewage aDisposal . Systems . . . . . . . . . . . . . . . 713
General , Individual Water Supplies . . . . . . . . . . . . . . . . . . . . . . . . 80
General , Sanitary Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
General , Trailer Park Plumbing. . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
RELIEF VALVE
Approvals . . . . . . . . . . . . . . . ... . . . .. . . . . . .... . . . . . . . . .'. . . . . . . . . . . . 37
.. ' Discharge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . 37
Pressure. . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . . . . . . . . .. .... .. . ... 69
�I Temperature and Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Page
REPEALINGCLAUSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
SEPTIC TANK (See Individual Sewage Disposal)
SEVERABILITYCLAUSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
SEWERS
And Drains Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Depth of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Drainage Piping Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
In Filled or Unstable Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Materials and Use Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maximum Fixture Unit Load. . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . 40
Pipe Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 , 26
Requirements for Bitumenized Pipe. . . . . . . . . . . . . . . . . . . . . . . . 37
Separate Ditch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 , 37
SHOWERS
On the Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Pan Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Receptors and Compartments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SOIL ABSORPTION SYSTEM (See Individual Sewage Disposal)
SOIL STACK (See Stacks)
SOLDERJOINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SPECIALFIXTURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SPECIAL WASTES
Acid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Commercial Dishwashing Machines , . . . . . . . . . . . . . . . . . . . . . . . . . 34
Drips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Food Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Indirect Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Length of Indirect.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
Sterile Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
STACKS
Loading and Vent Requirement Tables . . . . . . . . . . . . . . . . . . . . . . 41
Material and Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Minimum Size of. . . . . . . . . . . . . . . . 0 . . . . . . . . . . . . . . . . . . . . . . . . . 40
STACK VENTING. (See Vents , Sanitary)
SWEATJOINTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TEMPERATURE AND PRESSURE RELIEF VALVES (See Relief Valves)
THREADEDJOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
TITLECITED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 _
TRAILER COURT DETAILS (See Trailer Park Plumbing)
TRAILER PARK PLUMBING
Court Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Ditch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Drain and Vent Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
General. . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Inspection and Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Location and Size of Vents . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . 68
Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
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TRAILER PARK PLUMBING (Cont)
Pipe Sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Pipe Size Table. . 69
Plumbing Details... . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . 70
_ Plumbing Sketch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Prohibited Wet Vents. . . . . . . . . . . ... . . . . . . . . . . . . . . . . . 68 i
Relief Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Responsibility. . . . . . . . . . . . . . . . . . . . . 69
Size and Location of Cleariouts . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Shut-off Valve. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . 69
Vent Support and Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Water Distributing System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Wet Vent Inst'allation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
TRAPS
And Cleanouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Continuous Waste Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Drum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
General Regulations. . . . . . . . . . . . . . . .'. . . . . .I. . . . . . . . . . . . . . . . 26
Prohibited. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Seal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . 28
SlipJoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . 28
Vertical Distance to Fixture... . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
URINALS. . . . . . . . . . . . . . . . . . . . . 31
USEDPIPING. . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . 35
VACUUM BREAKERS
Approval of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Fixtures With Hose Attachments . . . . 35
Lawn Sprinklers. . . . . . . . . . . . . . . . . . . .I. . . . . . . . . . . . . . . . . . . . . . 35
Provision for. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Swimming Pools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
WithFlush Valves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
VENTS AND VENTING, SANITARY
Bar and Soda Fountains. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
' Circuit and Loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Common Vent. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Determining Length of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Distance From Trap Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Flashings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
General Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Grades and Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Height Above Fixtures , , , . . 43
Hydraulic Gradient and Developed Length. . . . . . . . . . . . . . . . . . 44
Individual Fixture Re-venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Main Stack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Main Vent Stack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Multi-story Wet Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Size and Length of Vent Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Size of Vent Stacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51I
Sizes for Circuit and Loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Stack Loading and Vent Requirement Table. . . . . . . . . . . . . . . . . 4111
Stack Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Stack Venting, Sketches and Details . . . . . . . . . . . . . . . . 46, 47 , 49
Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Trap Dip. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Trap Seal Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Underground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Vent Pipe Material. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Vertical Rise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Wet Venting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Page
VENTS AND VENTING, SANITARY (Cont)
Wet Venting Limitations . ..... . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Wet' Venting, Sketches 'and Details . . . . . . . . . . . . . . . . . . 46, 47 , 48
VENTS AND VENTING,' GAS
And Canopies in Hotels , Restaurants , etc. . . . . . . . . . . . . . . . . 57
Appliance and Equipment Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Appliances Requiring Vents . . . . . . . 62
Diverters Required. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Pressure Regulators , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Size of Vent and Flue Connections . . . . . . . . . . ... . . . . . . . . . . . . 57
Type of. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Venting Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Venting Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64, 65 , .66
WASTES
Acid. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Fittings and Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Food Grinder. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Indirect. ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Individual Sewage Disposal System. . . . .. . . . . . . . . . . . . . . . . . . 73
Lavatory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Materials For. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-37
Requiring Interceptor and/or Backwater Valve. . . . . . . . . . . . . 29
Spe'cial. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Stack Size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Water Closet. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
WATER CLOSETS
Connections . . . . . . . . . . . . . . . . . . . . 20
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
. ,
FOREWORD
The following codes and reference materials were reviewed and
consulted in the preparation of this code:
I
I
National Plumbing Code Handbook Vincent T. Manas
McGraw-Hill Book Co . , Inc .
New York, New York
National Plumbing Code - Illustrated - . Vincent T. Manas
Manas Publications
4513 Potomac Avenue, N. W.
Washington 7 , D. C.
National Plumbing Code , ASA A40 . 8-1955
Sponsored by
The American Public Health Association
American Society of Mechanical Engineers
The American Society of Mechanical Engineers
29 West 39th Street
New York 18, New York
Western Plumbing Officials Uniform Plumbing Code
Western Plumbing Officials Assn.
P. 0. Box 247
South Pasadena, California
Southern Standard Building Code
Southern Standard Building Code Congress
Brown - Marx Building
Birmingham, Alabama
I
Listing Requirements for Relief Valves and Automatic Gas Shut-off
Devices for Hot Water Supply Systems
-- American Gas Association
420 Lexington Avenue
New York 17 , New York
Installation of Gas Appliances and Gas Piping
American Gas Association
420 Lexington Avenue
New York, New York
Professional Plumbing Illustrated and Plumbing
Mathematics Simplified - Arthur J. Smith
Pro Mark Publications
Santa Clara, California
Metalbestos Gas Vent Tables and Handbook
William Wallace Company
Belmont, California
Modern Gas Appliance Venting
Amerivent Division of
American Metals Products Co . , Inc.
Los Angeles 22, California
Plumbing Code Primer
National Association of Plumbing Contractors
1016 Twentieth Street, N. W.
Washington 6 , D. C.
Cross Connection Control Handbook
Febco , Inc.
1993 Blake Avenue
Los Angeles 30 , California
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PREFACE
Many local officials will recognize this plumbing code as one
which already is in widespread use in Texas cities . That this
code has been so popular is a tribute to its many positive
- qualities , including its broad scope, the reasonable require-
ments set forth, clear language liberally supplemented with
illustrations , and a straightforward format which makes its
adoption simple and practical .
Additionally , pertinent sections of the State Licensing Law
(S . B. 188, Plumbing License Act of 1947) are incorporated
in a manner which makes this code compatible with the licens-
ing act.
Municipal officials facing problems in the administration of
plumbing activities are encouraged to contact the Texas State
Board of Plumbing Examiners and/•or the Texas State Department
of Health, both in Austin.
Texas Municipal League STEVE MATTHEWS
801 Vaughn Building Executive Director
Austin, Texas 78701
January, 1966
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Ir-