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Ord 67 Regulating Plumbing work and establishing feesORDINANCE NUMBER 67 AN ORDINANCE REGULATING PLUMBING WORK IN THE TOWN OFWESTLAKE, TEXAS: DEFINING CERTAIN TERMS: PROVIDING FOR CERTAIN EXEMP- TIONS; PROVIDING FOR THE ENFORCEMENT OF THIS ORDINANCE AND THE ISSUANCE OF PERMITS AND ESTABLISHING CERTAIN FEES; PROVIDING FOR SPECIFICATIONS, MATERIALS AND METHODS OF PLUMBING INSTALLATIONS; PROVIDING PENALTIES FOR VIOLATIONS OF THIS ORDINANCE: PROVIDING A SEVERABILITY CLAUSE BE IT ORDAINED BY THE CITY COUNCIL OF THE TOWN OF WESTLAKE; CHAPTER 1 TITLE CITED 1.1 This ordinance shall be known as the Plumbing Ordinance of the Town of Westlake 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 plumbing, or do or perform any plumbing as defined in this ordinance, without first having procured the necessary licenses and permits as hereinafter provided for, and all plumbing, plumbing work and workmanship and materials ,hall meet the requirements of this ordinance and shall pass all inspections required in this ordinance in regard to the work done. CHAPTER 2 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 installation, alteration or repair of pipes, fittings, and fixtures for waters, sewage and natural gas in all buildings and structures and on all property now erected or to be erected, changed, con- structed, reconstructed, repaired or altered in the, Town of Westlake, and outside the Town of Westlake if same be connected to either the City water or sewerage systems. The intent and purpose of this ordinance is to regulate the construc- tion, erection, enlargement, alteration, or repair of all piping, fittings, fix- tures, etc., used for the conduction of water, sewage and natural gas in or on - 1 - and about any and all premises in the Town of Westlake and outside the bounda- ries of the Town of Westlake if same be connected to either the City water or sewerage systems. CHAPTER 3 PIPING AFFECTED BY THIS ORDINANCE 3.1 EXTENT OF APPLICATION: This ordinance shall apply to all plumbing as herein defined within the boundaries of the Town of Westlake. Any plumbing out- side the boundaries of the Town of Westlake connecting to either the City water or sewerage systems shall meet all the requirements of this ordinance as to methods of installation and materials and shall be inspected by the City Plumbing Inspector. 3.2 EXCLUSION: This paragraph shall not apply to that work done by autho- rized employees of the Town of Westlake in the laying of the 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 alleys by authorized employees of any gas distributing company. CHAPTER 4 nPVTMTTTnM9 AIR GAP: An air gap in a water -supply system is the unobstructed vertical dis- tance 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 primary air inlet or inlets. ANCHORS: See Supports. APPLIANCE - GAS: A gas appliance is any device which utilizes gas fuel to produce light, heat or poser. APPLIANCE FLUE: The flue passages within the appliance. APPROVED: Approved means accepted or acceptable under an applicable specifi- cation stated or cited in this Code. AUTOMATIC GAS SHUT-OFF VALVE: A device so constructed that the attainment of a temperature or pressure in the medium being heated in excess of some pre- determined limit acts upon a chemical, metallic or diaphragm element in such a way as to cause the gas to the appliance 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 con- trolling the gas to that burner is turned on, and will effect re -ignition if the flames on the burner have been extinguished 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 equipment which will automatically shut off the gas supply to the burner being served by -2-- 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 lighted. BACKFLOW: Backflow is the reverse flow (by gravity) of water in a water dis- tribution 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 simi- lar adjacent fixtures which discharge into a common horizontal waste or soil branch. 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 permit emptying or discharge of sediment. 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 stacks corre- sponding 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 con- nected 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 individual vents with a vent stack or stacks vent. BUILDING: A building is a structure built, erected, and framed of component structural parts designed for the housing, shelter, enclosure, 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 SE14ER: The building (house) sewer is that part of the horizontal piping of a drainage system which extends from the end of the 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 assembly of fittings installed in the building drain to prevent circulation 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 re- quired to raise the temperature of one pound of water one degree Fahrenheit. BURNER: A device for the final conveyance of the gas, or a mixture of gas and air, to the combustion zone. 3 - CENTRAL HEATING GAS APPLIANCE: A vented gas-fired appliance comprising the following classes ac defined herein: Boiler, Central Furnace, Floor Furnace, or Vented Recesses] Heater. CHIMNEYS: A. Factory -Built Chimneys -- Chimneys that are factory 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 thick- ness, galvanized or painted unless suitably corrosion re- sistant, property welded or riveted and built in accordance with nationally recognized codes or standards. CIRCUIT VENT: A circuit vent is a branch vent that serves two or more traps and extends from in front of the last fiyture connection of a horizontal branch to the vent stack. CITY: Nhere the sword "City" is used in this Code it shall mean the Town of Westlake, Texas. CLOSED NATER 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, subse- quent amendments thereto, or any emergency rule or regulation which the Admin- istrative 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 SEVER: A combined building sewer receives storm water and sewage. COMBINATION SJASTE 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 combustion occurs. COMBUSTIBLE CONSTRUCTION: By combustible construction is meant a combustible wall or combustible surface constructed of wood, composition, or of wooden stud- ding and lath and plaster. _COMBUSTION PRODUCTS: Constituents resulting from the combustion of a fuel with the oxygen of the air, including the inerts but excluding 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 finished build- ing, 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, fit- tings, 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. -4-- CONTINUOUS [BASTE: A continuous haste is a drain from two or three fixtures connected to a single trap. CROSS CONNECTION: A cross connection is a physical connection or other ar- rangement thru which a potable water system may be contaminated by BACK SI- PHONACE or BACICFLOW . 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 dis- tance of 2 feet or more by means of a plug or other closed fitting. DEMAND - GAS: The maximum amount of gas required per unit of time, usually expressed in cu. ft. 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 along 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 maximum pos- sible demand. DOUBLE OFFSET: A double offset is two changes of direction installed in succession or series in continuous pipe. DRAFT ROOD: 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 es- cape 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 the effect of stack action of the vent upon the operation of the appliance. DRAIN: A drain is any pipe which carries waste water or water --borne wastes in a building drainage system. DRAINAGE PIPING: See Drainage System. 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 demands 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 correspond 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. - 5 - EXPOSED PIPING: Piping which will be in view in the finished structure. 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 fixtures. FIXTURE DRAIN: A fixture drain is the drain from the trap of a fixture to the junction of that drain with any other drain pipe. FIXTURE SUPPLY: A fixture supply is a water-supply pipe connecting the fix- ture with the fixture branch. . FIXTURE UNIT: A fixture unit is a measurement used to express the load pro- ducing effects of different kinds of plumbing fixtures. FIXTURE-UNIT FLOW RATE: Fixture-unit flow rate is the total discharge 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. FLAME SAFEGUARD: A device which will automatically shut off the gas supply to a main burner or group of burners when the means of ignition of such burners becomes inoperative, 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 receptacle from which water overflows. FLUE COLLAR: That portion of an appliance designed for the attachment the draft hood or vent connector. FLUE GASES: Products of combustion plus excess air in appliance flues or heat exchangers (before the draft hood or draft regulator). FLUSHOMETER VALVE: A flushometer valve is a device which discharges a pre- determined quantity of water to fixtures for flushing purposes and is actu- ated 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 fixtures. 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 transf ex '61V 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 packing, 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-fid Gas Vents. Factory made gas vents listed by a nationally recognized testing agency for venting listed or approved gas-fired vented recessed heaters. - 6 - C. Type C Gas Vents. Vents constructed of sheet copper not less than No. 24 U.S. Standard gage or galvanized iron of not less than No. 20 U.S. Standard gage, or other approved noncombustible corrosion -resistant material. GRADE: Grade is the slope or fall of a line of pipe in reference to a hori- zontal 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 laterally 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. HORIZONTAL PIPE: Horizontal pipe means any pipe or fitting which makes an angle of less than 45 degrees with the horizontal. HOTEL AND RESTAURANT RANGE: A gas appliance of the floor type providing for top cooking, :roasting, baking or broiling, or any combination 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 dis- tance 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. HOUSE TRAP: See Building Trap. INCINERATOR: An appliance used to reduce refuse material to ashes, and which is sold as a complete unit. INDIRECT WASTE_ PIPE: An indirect waste pipe is a pipe that does riot connect directly with the drainage system but conveys liquid wastes by discharging into a plumbing fixture 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 term- inated 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. INSANITARY: Contrary to sanitary principles - injurious to health. INTIRCEPTOR: An interceptor is a device designed and installed so as to sep- arate 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 temperature or liquid level for turning on, shutting off, or throttling the gas supply to an appliance. - 7 - LIQUID WASTE: Liquid waste is the discharge from any fixture, appliance, or appurtenance, in connection with a plumbing system which does not receive fecal matter. LISTED: The word "Listed" as used herein when not otherwise clarified 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 drainage system. It varies with the type of occupancy, the total flow unit above this point being considered, and with the probability factor of simultaneous use. LOOP VENT: A loop vent is the same as a circuit vent except that it loops back and connects wit`i 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 bearing 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 com- bustion zone, and on which combustion takes place to accomplish the function for which the appliance is designed. IATN 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 ith 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 delivered 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 roam or space where the appliance is or may be installed. PERSON: Person is a natural person, his heirs, executors, administrators suc- cessors or assigns. Singular includes plural, male includes female. PILOT: A small flame which is utilized to ignite the gas at the main burner or burners. PITCH: See Grade. PLn113ER -- APPRENTICE: A "Plumber's Apprentice" within the meaning of this Code is any person other than a master plumber or journeyman plumber, who, as his principal occupation, is engaged in learning and assisting a licensed plumber in the installation of plumbing. PLUM3E� -- 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 renovating of plumbing, and who is licensed by the Texas State Board of Plumbing Examiners as provided by the Plumbing Li- cense Law of 1947. PLUMBER -- MAST M : A "Master Plumber" within the meaning of this Code is a plumber having a regular place of business, who, by himself, or through a per- son or persons in his eL.ploy, performs plumbing work, and who is licensed 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, appurte- nances and appliances outside a building 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, appli- ances, drain or waste pipes carrying waste or sewage from or within a build- ing 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 install- ation, repair and maintenance of all piping, fixtures, appurtenances 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 ws_th water or which receive or discharge liquids or liquid borne wastes, with or without discharge into the drainage system with which they may be directly or indirectly connected. PLUMBING INSPECTOR: The "Plumbing Inspector" within the meaning of this Code is any person employed by the city for the purpose of inspecting 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 Plumbing 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 requirements of the Health Authority having jurisdiction. PRIMARY AIR: The air introduced 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 development of a dangerous condition in the medium being heated, by relieving either ptessdre temperature, or vacuum build-up in the appliance. A. Pressure Relief Valve: An automatic device which opens or closes a relief vent, depending on whethe the pressure is above or below a predetermined value. B. Te_-nperature Relief Valve: 1. Fusible Plus; 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- 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. - 9 - 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 .gent is a vent the primary function of which is to provide circulation of air beLweerk 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 individual waste or group of wastes, undezncath or back of the fixture, and extends either to the main or branch vent pipe. RIM: A rim is an obstructed open edge of a fixture. RISEP.: A riser is a water-supply pipe which-extends vertically one full story or more to convey water to branches or fixtures. ROOH OR SPACE HEATER. A self-contained gas-burning appliance installed in and for heating rooms. This definition shall not include unit heaters, cen- tral heating gas appliances, garage heaters, nor vented recessed heaters. ROUGHING-IN: Rou�rhin. -in is the installation of all parts of the plumbing system which can be completed prior to the installation of fixtures. This includes drainage, water-supply, gas supply and vent piping, and the neces- sary fixture supports. SAFETY SMUT-OFF VALVE: An automatic gas control valve of the "on" and "off" type which is actuated by the limit or protective controls or similar emer- gency devices. SAND INTERCEPTOR: See Interceptor. SANITAR" SEWER: A sanitary sewer is a pipe which carries sewage and exclude storm, surface, and ground water. SECOJND HAND: Second hand, as applied to material or plumbing equipment, 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 received the discharge of a drainage system or part thereof, and is designed and con- structed 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, an-_' may include liquids containing chemicals in so- lution. 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 without the discharge from other fixtures, to the building drain or building sewer. - 10 - SOIL PIPE: A soil pipe is any pipe which conveys the discharge of water closets or fixtures having similar functions, with or without 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 fittings, vents may be re- duced 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, lo- cated below the normal grade of the gravity system and which must be emptied by mechanical means. SUPPORTS: Supports, hangers, and anchors are devices for supporting 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 order to maintain tem- peratures between predetermined limits. TRAP: A trap is a fitting or device so designed and constructed as to pro- vide, 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 clip of the trap. UNIT HEATER: A self-contained gas burning appliance of the fan 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: An automatic device which prevents back siphonage by admit- ting air to relieve a partial vacuum in a water supply pipe. VALVE: See definition of Manual Gas Valve. 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 appli- ances 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. VINT STACK: A vent stack is a vertical vent pipe installed primarily 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 connector, if used, assembled to form a continuous open passageway from the gas appliance to the outside atmosphere for the purpose of exhausting vent gases. - 11 - 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 circu- lation 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 permanent attachment to a wall, floor, ceiling or partition, and furnishing 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 1_0 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 manufacturer 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. VERTICAL PIPE: A vertical pipe is any pipe or fitting which is installed in a vertical position or which makcs an angle of not more than 45 degrees with the vertical. WALL HEATER, UNVENTED OPEN-FLAME RADIANT TYPE: A room heater of the open front type, designed for insertion in or attachment to 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 in- corporates no concealed venting arrangements in its construction and discharges all products of combustion, through the open front into the room being heated. WASTE: See Liquid Waste and Industrial Wastes. WASTE PIPE: A waste pipe is a pipe whicil 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-distri- buting 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 plumb- ing 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 premises con- sists of the water-service pipe, the water-distributing pipes, and the neces- sary connecting pipes, fit-zings, control valves, and all appurtenances in or adjacent to the building or premises. WET VENT: A wet vent is a vent which also serves as a waste. YARD LINE - GAS PLUMBING: The section of consumer's piping and fittings ex- tending from the point of delivery to the house piping. 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. - 12 - CHAPTER 5 INCENSING REQUIREMENT 5.1 PLUMBING LICENSE REQUIRED 5.1.1 All persons who engage in or work at the actual installation, alteration, repair and renovating of plumbing shall possess either a mas- ter or journeyman plumber's license in accordance with the provisions of the Plumbing License Law of 1.947. 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 h.s home. 6.1.2 Maintenance. Utility Fnd Appliance 4dork: Plumbing work done by anyone who is regular_.y employed as or acting as a maintenance man or main- tenance 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 of its service mains or lines and the installation, alteration, adjustment, repair, removal and renovation of all types of appurtenances, equipment and appliances; appliance installation and service work done by anyone who is an appliance dealer or is employed by an appliance dealer, and acting as an appliance installation man or appliance service man in connecting appliances to existing piping installations. PRO- VIDED, HOWEVER, THAT ALL WORK AND SERVICE HEREIN NAMED OR REFERRED TO SHALL BE SUBJECT TO INSPECTION AND APPROVAL IN ACCORDANCE WITH THE TERMS OF ALL LOCAL VALID CITY OR MUNICIPAL ORDINANCES. CHAPTER 7 ADMIN ISTRAT ION 7.1 PLUMBING INSPECTOR: The office os Plumbing Inspector is hereby created to administer and enforce this Code. The City Manager shall appoint the Plumbing Inspector and any assistants necessary to aid him in the discharge of his duties. The person chosen to fill this office shall be of good moral character; shall be possessed of such executive ability, training and exper- ience 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 - is - be fixed by the City Manager. 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, plumbing manufacturer or wholesale plumbing and supply company or do any plumbing work while em- ployed as a Plumbing Inspector. 7.3 DITTIES OF INSPECTOR: The duties of the Plumbing Inspector or assist- ant plumbing inspector shall be to receive, approve and countersign, either in person or by an authorized representative, 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 plumb- ing wort, and sewer connections now in use or being constructed, or which may hereafter be constructed in tac city, or outside the boundaries of the city, if connections are made to either the city water or sewer systems, and to issue his certificate 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 imperfect plumbing, in- cluding 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 this code; to investigate all alleged violations of the plumbing ordi- nances; to file complaints against all, persons whom he may have reason to be- lieve have violated any of the plumbing or sewer ordinances of the city. Assistant inspectors of plumbing shall perform all of the duties and have 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, iTiere 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 notification to the utility involved to cut off the water or gas sup- ply thereto until such improper or defective plumbing shall be made to comply fully with the provisions of this code, and a certificate of the Plumbing In- spector 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 prop- erty as a result of an action committed in good faith in the discharge of his duties. 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. - 14 - 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 Health Officer (5) 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 Perms of Office: Members of the Board and their successors shall be appointed 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 Council in making said appointments. 8.1.3 Alternate Selection: If a.licensed architect or registered engineer is not available, the Council 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 compensation. 8.2 FLECTION OF OrrICERS 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 Chair- man, 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 re- cord of the proceedings of said Board shall be kept. A majority of the Board shall constitute a quorum for the transaction of business. DUT 11:S AND POWERS OF THE BOARD Right of' ALTeal: Any person, firm ox- corporation aggrieved by any interpretation of this code or by any decision or ruling by the Plumbing Inspector nrider this code shall have the right to make an appeal to the Pluml)Jng Appeals and Advisory Board. 8.3.2 Hearings by the Board: Within a period of ten (10) days from the filing of a written appeal the Board shall hear the appeal, together with the testimony of all parties concerned, and render a decision thereon within three (3) days thereafter, (Revised by Ord.#369, September 26, 1967) 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 inter- pret its provisions and in case of alternate types of construction or material, shall determine whether or not such alternate type of construc- tion or material is in fact equal to the standards of this code, consider- ing adequacy, stability, strength, sanitation and safety to the public health and welfare. Any person, firm or corporation who may be aggrieved by the decision of the Board shall have a right of appeal to the City Coun- cil within ten (10) days from the rendition of such decision. Said appeal shall be perfected by written notice addressed to the Mayor and City Coun- cil 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 shall 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 the light of the development of new materials, methods or techniques which would result in a better and more economical installation. All requests for use of ma- terials or methods not covered in this code shall be fully supported by fac- tual evidence, or prior approval, from a recognized testing agency or such impartial qualified authority acceptable to the Board. CHAPTER 9 PERMITS AND FEES 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 without 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 extension 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 other- wise provided 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 fol- lowing: (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 "roughing -in" is involved except replacement of water heaters. (See: Paragraph 9.1.1 - C.) - 16 - The above examples are representative only and should not be con- sidered as a limitation on the term "minor repairs." 9.1.3 Issuance of Permit: The Plumbing Inspector or his designated rep- resentative shall issue all plumbing permits in accordance with the provi- sions and requirements of this code. All applications for permits shall give the correct location of the building, name of the owner of such build- ing, 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 considered 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 accord- ance with all of the provisions of this code, if in his judgment the condi- tions require it. Application for this type permit shall be made in writing accompanied by a sketch showing 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 prescribe such specifications as may be necessary and shall be consulted before any work is started. 9.1.5 Persons Who May Obtain A Permit: Permits shall be issued only to the following: (1) Any Master Plumber licensed by the State Board of Plumbing Examiners. (2) Any property owner for plumbing work to be done by him in a building owned or occupied by him as his home. (3) Any appliance dealer or employee of an appliance dealer who is acting as an appliance installation man or appliance 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 misde- meanor 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 unreasonable delay has been corrected. 9.1.8 Duration of Permit: Every permit issued under the provisions of this code shall expire .180 days after the date thereof unless the work authorized by such permit shall have been commenced within such time; and every permit shall expire if the work authorized by such permit is suspended or abandoned for as long as one year 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. W VM 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: Foreach house sewer . . . . . . . . . . . . . . . In addition For each plumbing fixture or trap or set of fixtures of one trap (including water and drainage piping) . . . . . . . . . . . . . . . For each house sewer having to be replaced or repaired. . . . . . . . . . . . . . . . . . For each water heater . . . . . . . . . . . . . . For each gas piping system of 1 to 15 outlets. Each additional outlet over 15, each For installation of water piping for water treating equipment . . . . . . . . . . . Lawn sprinkler system inspection for fifteen (15) sprinkler heads . . . . . . . . . . . . . . . . Each additional sprinkler head over fifteen, each For reinspection . . . . . . . . . . . . . . . . . $1.00 $ .75 . $2.00 $ .75 . . . . . $2,00 $ .10 $ .75 . $1.00 . . $ .10 . . . . . $1.00 9.2.3 Refund of Permit Fee: A plumbing permit may be cancelled by the applicant at any time within six (6) months of the date of issuance. If no work has been done under such permit, the plumbing inspector, when formally requested in writing by the applicant, shall refund seventy --five per cent (75%) of the permit fee paid, but in no case shall the city retain less than $2.00 nor more than ten dollars ($10.00) of the fee paid to cover the cost of auditing the fee. 9.2.4 Reinspections: The permit fees prescribed in Section 9.2.2 shall include the cost of the initial inspection and one reinspection required by this ordinance. If the installation is found to be defective and the plumbing inspector is required to make a second reinspection, a fee of $2.00 shall be charged to the plumbing contractor for the second reinspection and for each reinspection required thereafter. 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 sure of Two Thousand ($2,000,00) Dollars, conditioned that the person, firm or corporation engaged in the plumbing business will faithfully observe all the laws pertaining to plumbing; -Further, that the City shall be indemnified and saved harmless from all claims arising from accidents and damage of any char- acter whatsoever caused by the negligence of such person, firm or corporation - 18 - 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 installed shall conform with the provisions of this code. 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 wyes, long sweep quarter bends, sixth, eight, or sixteenth bends, or by a combination of these or equivalent fittings. Single and double sanitary ties may be used in drainage lines only where the direction of flow is from the horizontal to the vertical. (Revised Ord.#369,Sept.26,1967) 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 fitting. 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 horizontal position. 11.3.3 Obstruction to Flow: No fitting or connection which offers abnormal obstruction to flow shall be permitted. 11.4 EXISTING BUILDINGS 11.4.1 Provision for Code Deviations: In existing buildings or prem- ises in which plumbing installations are to be altered, repaired, or renovated, necessary deviations from the provision 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 underground 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. - 19 - 11.5.2 Damage to Drainage System or Public Sewer: It shall be un- lawful for any person to deposit by any means I to the building drain- age 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 1.1.6.1 Lead: Four -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 connections of approved manufacture. 11.6.3 Reducing: Four by three-inch extra heavy lead or approved 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 pass- age of piping shall be properly sealed with snugly fitting collars of metal or other approved rat --proof material securely fastened 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 ord- inary 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 12.1.1 Minimum S a dal: The materials listed in this Chapter shall conform at least to the standards cited when used in the construction, installation, alteration, or repair of any part of a plumbing and drain- age system, except that the Inspector shall allow the extension, addi- tion, or relocation of existing soil, waste, or vent pipes with materials of like grade or quality. 12.1.2 Use of Materials: The following Table outlines permissable materials for various uses subject to the restrictions of the following chapters. 12.1.3 Materials Not Listed: Materials other than those listed for the various uses may be permitted upon approval of the Plumbing Appeals and Advisory Board. -2o- 12.1.4 MATERIALS AND USES: Clay Sewer Pipe Bituminized Sewer Pipe Asbestos Cement Pipe Cast Iron Soil Pipe & Fittings Cast IronThreadedPipe Cast Iron Water Pipe & Fittin s Cast Iron (Screwed Fittings Cast Iron (Drainage) Fittings Wrought Iron Pi e Galvanized * Steel Pipe Galvanized Open Hearth Iron Pipe Malleable Iron Fittings Galvanized Malleable Drainage Fittings Brass Pipe I.P.S. & Screwed Fittin Copper Pipe I.P.S. _ Copper Water 'Tube & Wrought Copper Fittings (Type K or L) Soldered Joint Fittings - Copper, Brass & Bronze Cast Brass Flared Type Fittings Solder Joint Drainage Pattern Fittings Brass Tube, Type M Cope.r. Tube, Type DWVR C� LeL Tube_, Type L ggppe:r Ting,- ,- Type K LeA Pipe Steel Pipe Cement Lined Plastic, Sched 80 PVC, or APVC Plastic, Polyethylene Glass (of Approved Manufacture) "k Plastic Pipe - C°-270-60 ©■■®®0■■■■■ NEENEENNEENE ®EENENNENNE® EME,EMENE®E© May be used for large size service lines and private distribution systems (3 inches or larger) * Revised Ord. #369, September 26, 1967 - 21 - CHAPTER 13 JOINTS AND CONNECTIONS 13.1 GENERAL 13.1.1 T-ightness: Joints and connections in the plumbing system shall be gastight and watertight for the pressures required by test, with the ex- ception of those portzons of perforated or open -joint piping which are in- stalled for the purpose of collecting and conveying ground or seepage water to the underground storm drains. 13.2 TYPES OF JOINTS PERMITTED TO BE USED 13.2.1 Calked Joints: Calked joints for cast-iron bell -and -spigot pipe shall be not less than of the hub. firmly packed with oakum or hemp and filled with molten 1 inch deep and not to extend more than 1/8 inch below soil lead the rim 13.2.2 Threaded ,joints: Threads shall conform to American National Taper Pipe 'thread, ASA B2.1-1945 or FS GGG-P-351x. All burrs shall be removed. Pipe ends shall be reamed or filed out to size of bore, and all chips shall be removed. Pipe -joint cement and paint shall be used only on male threads. 13.2.3 Wiped Joints; Joints in lead pipe or fittings, or between 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 be- tween lead pipe and cast iron, steel, or wrought iron shall be made by means of a calking ferrules 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 soldered or sweated shall be cleaned bright. The joints shall be properly 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. 13.2.5 Flared Joints: Flared joints for soft -copper water tubing shall be made with fittings meeting app,oved standards. The tubing shall be ex- panded with a proper flaring tool. 13.2.6 Hot -Poured Joints: Hot -poured compound for clay 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 to destroy the effectiveness of the joint when subjected to a temperature of 1600 F nor be soluble in any of the waste carried by the drainage system. - 22 - Approximately 25 per cent of the joint space at the base of the socket shall be filled w`_th jute or hemp. A pouring collar, rope, or other device shall be used to hold the hot compound during pouring. Each joint shall be poured is one operation until the joint is filled. ,joints shall not be tested until. one (1) hour after pouring. 13.2.7 Neoprene R-ag Gasket Joints: Joints on sewers constructed of asbes- tos -cement pipe, cast iron sol pipe, and clay the pipe may be made with a neoprene ring gasket that is compressed together forming a water and pressure type joint, and shall be made i_n accordance with the respective manufacturers' specif_cations and instructions. CHAPTER 14 TRAPS AND CLEAN®UTS 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 fi.;ture as possible. A. Provided, that a combination plumbing fixture may be in- stalled on one trap, if one compartment _s not more than 6 inches deeper than the other and the waste outlets are not more than 30 inches apart. B. Provided, that one trap may be installed for a set of not more than three single -compartment sinks or laundry trays 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 vertical distance from the fixture outlet to the trap weir shall not exceed 24 inches. The same princ:i..ple applies to the distance from an integral fixture trap, as in a water closet, to the connection with a horizontal drain. 14.2 FIXTURE TRAPS 14.2.1 P Traps: Approved types of P traps of the same, or larger, diam- eter of the fi.tture drain may be used. 14.2.2 Drum Traps: Drum traps shall be not less than 3 inches aor more than 4 inches in diameter with at least a 2 -inch water seal. The trap screw shall be one size less than Che trap diameter. 14.2.3 Trap Seal: Each fixture trap shall have a water seal of not less than 2 inches and not more thaal 4 inches, except where a deeper seal is found necessary by the Plumbing Inspector for special conditions. - 23 - 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 out- side of the building when found necessary by the Plumbing Inspector. 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. 14.3.3 Change of Direction: A vent or cleanout shall be installed in hor- izontal drainage piping at each change of direction greater than 45 degrees, provided that vents or 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 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 removal 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 foot of each sink waste stack. 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 Cleanout Plugs: Cleanout plugs shall not be used for the installa- tion of new fixtures of floor drains except where approved by the Inspector. CAHAPTER 15 INTERCEPTORS AND BACIMTER VALVES 15.1 INTERCEPTORS AND SEPARATORS MZIM 15.1.1 When Required: Interceptors (including grease, oil, and sand in- terceptors, etc.) shall be provided when, in the judgment of the Plumbing Inspector, they are necessary for the proper handling of liquid -borne wastes containing grease, flammable wastes, sand, or other elements harmful to the building drainage system, the public sewer, or sewage -treatment plant or processes. 15.1.2 Residential Units: A grease interceptor is not required for in- dividual dwelling units or private living quarters. 15.1.3 Venting Interceptors: Interceptors shall be so designed 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 in- stalled as to provide ready accessibility to the cover and means for servic- ing. 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 discharge from fix- tures located within such branch and below grade and shall be so constructed as to insure a mechanical seal against backflow. All bearing parts shall be of bronze or other corrosion resistant material. 15.2.2 Diameter: Backwater valves, when fully opened, shall have a capac- ity 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 duality of Fixtures: Plumbing fixtures shall have smooth imper- vious surfaces, be free from defects and concealed fouling surfaces. 16.1.2 Supply Lines Protected: The supply lines or fittings for every plumbing fixture shall be so installed as to prevent backflow or back siphon- age. 16.1.3 Prohibited Fixtures and. Connections: Pan, valve, plunger, offset, washout, latrine, frostproof, and other +vaste 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 si- phonage of the contents of the bowl back into the tank shall be prohibited. Floor -type trough urinals are prohibited. L'5 - 16.1.4 Strainers Required: All plumbing fixtures, other than water clos- ets and siphun-action washdown or blo+vout urinals, shall be provided with metal strainers. 16.1.5 Waste {cutlets in Lavatories: Lavatories shall have waste outlets not less than 1 174 inches in diameter. Wastes may have open strainers or may be provided with stoppers. 16.1.6 Floor Drains: Floor drains shell have approved metal traps and a minimum water seal of 3 inches and shall be provided with removable strain- ers. The open area of strainer shall be at least two-thirds of the cross- section area of the drain line to which it connects. 16.2 WATER CLOSETS 16.2.1 Flush Tani-, 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 bawl. 16.2.3 Close Coupled Tanks: The flush -valve seat in close coupled water closet combinations shall be l inch or more above the rine of the bowl, so that the t'lush 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 installed that they will lie ' cadily accessible fur repairing. When the valve is operated, it shall complete the cycle of operation automatically, opening fully and closing positively under the service pressure. At each operation the valve shall deliver water in sufficient volume and at a rate that will thoroughly flush the fixture and refill. the fixture trap. Means shall be provided for regulating flush valve flow. Not more than one fixture shall be served by a single flush valve. 16.3 URINALS 16.3.1. Automatic Flushing Tank, When Required: Tanks flushing more than one urinal shazl be automatic :in operation and of sufficient capacity to pro- vide the necessary volume to flush an(IL properly cleanse all urinals simulta- neously. 16.3.2 Urinals Equipped with Flush Valves: Flush valves shall be as pre- scribed in Section 16.2.4 and no manually operated valve shall be used to flush more than one. urinal. Automatic electrically operated flush valves in a battery 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 washdown pipe shall be perforated so as to flush with an even curtain of water :against the buck of the urinal. This pipe shall be securely clamped as high as practicable to the back: of the - 26 - 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. Con- tinuous water flow through perforated washdown pipe may be used to flush trough urinals. 16.3.4 Surrounding Materials: The wall 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 mater- ials. 16.4 FOOD WASTE GRINDER UNITS 16.4.1 Disposal Unit: 14here a disposal unit is installed in one of the compartments of a two-compartment sink, the disposal unit shall discharge directly into the trap and a continuous waste may be used for the other com- partment. 16.5 DRINKING FOUNTAINS 16.5.1 Design and Installation: The jet of the fountain should issue from a nozzle o"ic non -oxidizing, impervious material see at an angle from the vertical such as to prevent the return of water in the jet to the ori- fice or orifices from whence the jet issues. The nozzle and every other opening in the water pipe or conductor leading to -che nozzle should be above I edge of the bowl, so that such nozzle or opening cannot be :�loodeu in case a drain from -the bowl of the fountain becomes clogged. The encs of the nozzle should be protected by nota -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 projectors shall be so assembled as to provide an orifice elevation as specified by American Standard Air Gaps in Plumbing Systems (ASA A410.14-1942) and American Standard Backflow Prevent- ers in Plumbing Systems (ASA A40.16-1963). 16.6 SHOWER RECEPTORS AND COMPARTMaITS 16.6.1 Shower - Pan Required: All shower compartments, except those built cirectly on the ground or those having metal enameled receptors, shall have a properly protected lead or copper shower pan or the approved equivalent thereof or as determined by the Inspector or in the case of d.vellings as ap- proved by the F H A. The pan shall -turn up on all sides at least 4 inches above the finished floor level. or 3 _nches above finishei-i curb level which- ever is the highest. Traps shall be so constructed that the pan may be se- curely fastened to the trap at the seepage entrance making a Fvatertight joint be-bveen the pan and trap. Shower receptacle waste outlets shall be not less than 2 inches in diameter and Have removable strainers. 16.6.2 On che Ground: Shower receptrirs built on the ground shall be con- structed from tense non-absorbent and non -corrosive materials and shall have smooch impervious surfaces, or its provided in Paragraph 16.6.1. 16.7 SPECIAL FIXTURES 16.7.1 Specialties: Baptistries, ornamental and lily pools, aquaria, ornamental:ountain basins and similar constructions, when provided with -27-- Water suppl_es, shall Oe protected 1-rom back -siphonage as ve,u-red �� Para- graph 19.2 or 1`3.3. SpecialUes repuireing water and waste connectiois shall be submitted for =approval of the Ias?ector. CHAPTER 17 HAY ERS AND SUPPORTS 17.1 STRAIN LED STRESSES 17.1. 1 General: piplaS in a plu,i_ g sysacm shall be installed A shout undue strains aad K esses, and prov.-_sion shall be made fo__ expansion, con- tractloa, and structural settlement. 17.2 VERTICAL PIPING 17.2.1 Altachment: vertical piping shall be secured at sufficiently 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 supported at not less than 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 12 inches and over and at not more than 4 -foot intervals for 11 inches and smaller. 17.3 HORIZONTAL PIPING 17.3.1 Supe: Horizontal piping shalt. be supported at sufficiently close intervals to keep it in alignment and prevent sagging. 17.3.2 Cast -Iron Soil Pipe: Cast-iron soil pipe shall be supported at not more than 5 -foot intervals. 17.3.3 Screwed Pipe: Screwed pipe (IPS) shall be supported at approxi- mately 10 -foot intervals. 17.3.4 Copper Tubing: Copper tubing shall be supported at approximately 6 -foot intervals for piping 11 inches and smaller and 10 -foot intervals for piping 2 inches and larder. 17.3.5 Lead Pipe: Lead pipe shall be supported by strips or otherwise for its entire length. 17.3.5 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 ade- quate in the judgment of the Plumbing Inspector. - 20 - CHAPTER 13 INDIRECT WASTE PIPING AHD SPECIAL WASTES 15.1 SPECIAL WASTES 15.1.1 Food Handlin!: Establishments engaged in the storage, preparation, selling, serYiing, 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 eruipment discharge indirectly into a sink o, receptor and the waste outlet shall terminate ac least 2 inches above the flood rim of such sink or receptor. 15.1.2 Connection: Indirect waste connections shall be provided for drains, overflows, or relief vents from the .rater supply system or air conditioning un -i t s . 10.1.3 Sterile Materials: Appliances, devices, or apparatus such as sterilizers, stills, and similar equipment requiring tracer and waste con- nections and used for sterile material shall be indirectly connected or pro- vided with an air gap between the trap and the appliance. 15.1.4- Des: Appliances, devices, or apparatus not regularly classed as plumbingi:,tures but which have drips or drainage outlets, shall be drained by indirect waste pipes discharging into an open receptacle. 15.1.5 Commercial Dishwashing Machines: Dishwashing machines, except those in private living quarters or dwelling units, shall be indirectly con- nected. 15.2 LENGTH 15.2.1 Waste Pipe: Any indirect waste pipe exceeding 2 feet in length shall be trapped. 13.2.2 Leath to Vent Limitation: The maximum length of the indirect waste to vent shall not exceed 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 VJATEP, SUPPLY AND DISTRIBUTIUN 1S.1 PROTECTI01d OF POTABLE ['TATER SUPPLY 19.1.1 Cross Connections: Potable water -supply piping, water discharge outlets, backflow -prevention devices or similar equipment shall not be lo- cated so as to make possible their submergence in any contaminated or pol- luted liquid or substance. - 29 - 19.1.2 Approval of Devices: Before any device for Lhe prevention of backflow or back siphonage is installed, it shall have first been certified. as meeting the requirements and tests as required 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 having control of such devices. The Inspector may inspect such devices and, if found to be defective or inoperative, shall require the re- placement or repair thereof. 19.2 PMNE ITION OF BACKFLOW BY AIR GAP 19.2.1 Provision for Air p: The water distribution system shall be protected against backflow. Every crater outlet shall be protected from back- flow, crherepossible, by having the discharne and elevated to provide a 11min- imum required air gap" as defined in ASE_ A40 4.-1)42. Where it is not possible to provide a minimum air bap, the water outlet shall be equipped with an accessible located backtLlow preventer complyiab with requirements as staled in Paragraph 19.1.2 above, installed on the discharge side of the manual control valve. 19.3 VACUUM DREAI;E S 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 ',cowl. 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 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 installed 1 inch above the full opening of the overflow pipe. 19.3.3 Lawn S riaklers: Lawn sprinkler systems shall be equipped with an approved vacuum breaker on Lhe 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 above the surroundinb -round. Where combination control valves and backflow preventers are installed, ;:he bottom of the valve shall constitute the bottom o the backflow preventer. 19.3.4 Fixtures !lith Bose attachments: Fixtures with hose attachments shall be protected by an approved vacuum breaker installed 6 inches above the highest point of usage and on the discharne side of the valve. 19.4 WATER DISTRIBUTIOiT PIPI-NIG FITTINGS 19.4.1 Materials: Materials for water pipes and tubing shall be brass, copper, cast iron, wrought iron, open-hearth i_ -on, or steel, with appropriate approved fittings. All threaded ferrous pipe and fittings shall be galvanized (zinc coated) inside and out=side. Underground connections between ferrous and non-ferrous pipe shall be made only through an approved dielec�ric insu- lating type of coupling, union, or connector. - 30 - 19,4.2 Selection of Materials: When selecting the material and size for water supply pipe, tubing, or fittings, due consideration shall be given to the action of the water on the interior and to the soil, fill or other mate- rial on the exterior of the pipe. No material that would produce toxic con- ditions 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, copper tubing. Copper pip- ing 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. 19.4.5 Water Supply Control: A main shut-off valve on the water service pipe shall be provided near the building line and protected by a concrete box 1811 in diameter with a removable cover. 19.4.6 Tank Controls: Supply lines taken from pressure or gravity tanks shall be valved at or near their source. 19.4.7 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. 19.4.8 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 TYPE OF FIXTURE PIPE SIZE OR DEVICE (Inches) OR DEVICE (Inches) Bath Tubs . . . ..• . . . 1/2 Shower (single head) . . . 1/2 Combination Sink and Sinks (sere., slop) . . . 1/2 Tray . . . . . . . . . . 1/2 Sinks Flushing Rim 3/4 Drinking Fountain . 3/8 Urinal (flush tank) 1/2 Dishwasher (domestic) . . . 1/2 Urinal (direct flush Kitchen Sink, residential 1/2 valve) . . . . . . . . . 3/4 Kitchen Sink, commercial 3/4 Water Closet (tank type) 3/8 Lavatory . . . . . . . 3/8 Water Closet (flush Laundry Tray, 1, 2 or valve type) . . . . . . 1 3 compartments . . . . . 1/2 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. - 31 - 19.4.9 Separation from Drain and Sewer: Except as permitted in Paragraph 19.4.11, the underground water -service pipe and the building drain or build- ing server shall be not less than 5 feet apart horizontally and shall be sep- arated by undistrubed or compacted earth. 19.4.10 When Separation Not P.equired: Where the ,nater -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 installed 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. 19.4.11 Private !dater Supply: No private water supply shall be intercon- nected with any public water supply. 19.5 IIATER HEATIRS 19.5.1 Temperature -Pressure and Relief Valve: All water heaters shall be protected with a combination temperature -pressure relief valve installed in the hot water outlet side of the tank. The temperature sensing element shall be immersed in the water within the upper b inches of the storage tank. 19.5.2 Relief Valve Discharge: The discharge pipe from the temperature - pressure relief valve shall be run to the outside of the building. 19.5.3 Approvals: Temperature -pressure relief valves which have been tested and approved by, or meet the specification requirements of the Amer- ican Gas Association, the Underwriter's Laboratories, Inc., or other recog- nized approval authorities, shall be considered acceptable. 19.5.4 Pressure Marking of Storage Tank: Any storage tank hereafter in- stalled for domestic hot water shall have clearly and indelibly stamped in the metal, or so marked upon a plate welded thereto, or otherwise permanently attached, the maximum allowable working pressure. Such Markings shall be in an accessible position outside of -rhe tank so as to make inspection or re -in- spection readily possible. All storage tanks for domestic hot water shall meet the applicable ASMIE standards. CHAPTER 20 DRAINAGE SYST al 20.1 GENERAL 20.1..1 Materials: Pipe, tubing and fittings for drainage systems shall comply wit ce provisions of Chapter 12 of this code. Above ground piping - 32 - within buildings and piping in raceways or tunnels shall be of cast iron, galvanized open-hearth iron, lead, brass, or copper pipe, or copper tubing. Extra heavy weight cast-iron pipe shall be used in buildings more than two - stories in height. 20.1.2 Underground Piping Within Buildings: All drains within buildings, when underground, shall be of cast --iron soil pipe. 20.1.3 Fittings: Fittings on the drainage system shall conform to the type of piping used. Fittings on screwed pipe shall be 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 20.2.1 Separate Trenches: The building sewer, when installed in a sep- arate trench from the water -service pipe, shall be cast-iron sewer pipe, vitrified -clay sewer pipe, concrete sewer pipe, bituminized-fiber sewer pipe, asbestos -cement sewer pipe or plastic sewer pipe. Joints shall be watertight and rootproof. 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 installed as to remain watertight and be rootproof. The building sewer shall be tested with a 5 foot head of water or equivalent and found to be tight. 20.2.3 Filled or Unstable Ground: A building sewer or building drain installed in filled or unstable ground shall be of cast-iron pipe, except that non-metallic drains may be laid upon an approved concrete pad if in separate trench. 20.3 DRAINAGE PIPING INSTALLATION 20.3.1 Uniform Grade: Horizontal drainage piping shall be installed at a uniform slope or grade as follows: A. Small Piping: Horizontal drainage piping of 3 -inch diameter and less shall be installed w�_th a fall of not less than 1/4 -inch per foot. - 33 - B. Large Piping: Horizontal drainage piping larger than 3 -inch diameter shall be installed w th a fall of not less than 1/8 -inch per foot. C. 1"Unimum Velocity: Where conditions do not permit build- ing drains and sewers to be laid with a fall as ;rest 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 SEPTIC TANKS PROHIBITED 20.4.1 No septic tank shall be allowed to serve any building situated upon any lot, tract, or parcel of laid which is located within 100' of a city sever. 20.5 SEPTIC TfIMS WHERE ALLOWED 20.5.1 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 absorption system must be located a safe distance from Mater wells, streams, etc., and soil conditions must be suitable. Further, the site must not be in an area sub- ject to,flooding, anu topography should permit gravity flow through the entire process. 20.5.2 Table of 14inimum Safe Distance in Feet: Vitrified Soil Cast Clay Pipe Septic Absorption Iron With Water - From To Tank System Sewers Tight Joints Water Wells, Cisterns— and Pump Suction Pipes 50 150 10 50 Streams and Ponds 50 50 50 Foundation Walls of Structures 5 15 - - Property lines 10 10 - 20.5.3 Design and Construction of 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 inside di- ameter 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. 20.5.4 Design and Construction of Septic Tank: A properly -designed septic tank wi11 be water -tight and will hold all sewage from the home for - 34 - about a two-day period, in which time gravitational force will cause the settling -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 sew- age 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 bed- rooms in the house to be served. The addition of ground -up garbage solids will also have a significant bearing upon required tank capacity. 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 penetra- tion 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 percent of the tank liquid depth. "T" branches are recommended for inlet and outlet devices because they provide a means for venting decomposition gases from the tank and absorp- tion 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. The septic tank should be of sturdy, water -tight construction. Materials used may be concrete (reinforced poured in place, precast, or concrete base, tile, or metal. The latter should meet the U. S. Department of Commerce Commercial Standard CS177-62. 20.5.5 Table of Septic Tank Minimum Liquid Capacity Septic Tank Capacity (Gallons) Number 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. 20.5.6 Design and Construction of Soil Absorj2tion Svstem: Liquid dis- charging Cr -oma septic tank requires further treatment to render it safe - 35 - and chemically stable. A well—designed subsurface soil absorption system will allow these liquids to seep away into the ground at a slow rate with— out creating a health hazard or nuisance. After the prospective builder has picked out a suitable area, with the consideration of safe distances and topography in mind, he should then determine whether soil formations in the chosen area will allow the soil absorption system to work. 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 looped trench will avoid dead ends and assure maximum effective 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. All parts of the trench bottom should be at the same elevation, with a permissible variation in total trench depth of a minimum eighteen 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 between 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 distributed 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 filter— ing media may be clean, graded gravel, broken brick, washed rock, or sim- ilar aggregate and may range in size from one—half inch 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. Covering the top half of the distribution pipeline with lengths of tarpaper 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 sta— bilized. tdhere the topography, or ground slope, is too steep for feasible con— struction 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 con- ducted 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. — 36 — Poor construction practices will cause serious damage to the soil absorp- tion 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 raked to a depth of one inch and loose material removed just before the gravel or other media is laid. The top of a new absorption trench should be hand -tamped and overfilled with about four to six inches of earth to prevent later settling below grade. Automobiles or heavy machinery will crush the distribution tile and should be excluded from the area unless special provisions are made to support the extra weight. 20.5.7 Table of Suggested Dimensions For Rectangular Tanks Tank Capacity Inside Inside Inside "All "B" (Gallons Width Length Depth 500 3 r — Orr 6 r _ Orr 41 _ 911 sill 12" 75O 3 r — 6rr 71 -. 611 41 — 1011 91r 1-211 900 3 r - 61r 71 _ 611 5 r _ 711 911 1211 20.5.8 Table of Minimum Required Trench Per Bedroom Average Required Trench Total Trench Length (Feet) Percolation Rate Bottom Area for Specified Trench Widths (Minutes Per Inch) (Square Feet) 1811 241' 3011 3611 1 85 57 43 34 29 3 100 67 50 40 34 4 115 77 58 46 39 5 125 84 63 50 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 area requirement as given in this Table. 2. This Table provides for the normal household appliances, including automatic sequence washer, mechanical garbage grinder and dishwasher. 37 -- 20.6 FIXTURE UNIT VALUES 20.6.1 Use of Fixture Unit Value: Fixture unit values as given in Paragraph 20.4.2 designate the relative load factor of different kinds of fixtures which shall be employed in estimating the total load car- ried by a soil or waste pipe and shall be used in connection with the tables of sizes for soil, waste, and drain pipes for which the permis— sible load is given in terms of fixture units. 20.6.2 TABLE OF FIXTURE UNIT VALUES Fixture --unit Minimum Size Value as load of trap Fixture Type factor inches 1 Bathroom group consisting of water closet, (Tank water lavatory, and bathtub or shower stall (closet . . . 6 (Flush—valve (water closet 8 Bathtub 1 (with or without overhead shower). . . 2 1 1/2 Bathtub 1 . . . . . . . . . . . . . . . . . . . 3 2 Bidet . . . . . . . . . . . . . . . . . . . . . 3 Nominal 1 1/2 Combination sink—and—tray . . . . . . . . . . . 3 1 1/2 Combination sink—and—tray with food disposal unit 4 Separate traps 11/2 Dental unit or cuspidor . . . . . . . . . . . . 1/2 1 1/4 Dental lavatory . . . . . . . . . . . . . . . . 1 11/4 Drinking fountain . . . . . . . . . . . . . . . 1/2 1 Dishwasher, 2 domestic . . . . . . . . . . . . 2 1 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 compartments) . . . . . . . 2 1 1/2 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 jet, blowout 8 Nominal 3 Urinal, wall lip . . . . . . . . . . . . . . . . 4 1 1/2 Urinal stall, washout . . . . . . . . . . . . . 4 2 Urinal trough 2 (each 2 --foot section) 2 1 1/2 Wash sink 2 (circular or multiple, each set of faucets 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 Para. 20.6.3 for method of computing unit value of fixtures not listed in Table 20.6.2 or for rating of devices with intermittent flows. 3. Size of floor drain shall be determined by the 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. 20.6.3 Fixtures Not Listed in Paragraph 20.6.2: Fixtures not listed in Paragraph `10.6.2 shall be estimated as - lows: 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 20.7 DETERMINATION OF SIZES FOR THE DRAINAGE SYSTEM 20.7.1 Maximum fixture -Unit Load: The maximum number of fixture 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 Para. 20.7.2 and 20.7.5. 20.7.2 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 build- ing 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 . . . . . . . . . . . . . . . . *(2) 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 closet 20.7.3 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 td. C. connection shall not be considered as a reduction in pipe size. 20.7.4 Minimum Size of Stack Vent or Vent Stack: Any structure in which a building drain is installed shall have at least ane vent stack carried full size through the roof not less than 3 inches in diameter or the size of the building drain, whichever is the lesser. - 39 - 20.7.5 Table of horizontal Fixture Branches: Maximum Number of Fixture Units That May Be Connected To Up to 3 -stories in height Over 3 stories in height Diameter of Any horizontal *(1) fix- Total at 1 -story or Pie Inches ture branch branch interval 1'k . . . . . . . . . . . . 1 1 12 . . . . . . . . . . . . 3 2 2 . . . . . . . . . . . . *(3) 5 *(3) 4 22 . . . . . . . . . . . . *(3) 9 *(3) 7 3 . . . . . . . . . . *(2) 16 *(2) 12 4 . . . . . . . . . . 120 90 5 . . . . . . . . . . 300 200 6 . . . . . . . . . . . 580 350 g . . . . . , . . . . . . 1,200 600 10 . . . . . . . . . . . . 2,500 1, 000 12 . . . . . . . . . . . . 3,900 1, 500 *(1) Does not include branches of the building drain line *(2) Not over one water closet *(3) Water Closets not permitted CHAPTER 21 VENTS AND VENTING 21.1 GENERAL REQUIREMENTS 21.1.1 Vent_Pipe Material: Vent piping shall be of cast-iron, galvanized wrought iron, galvanized steel, lead, brass, copper pipe, copper tube, or one piece cement asbestos. See Paragraph 12.1.4 for table. 21.1.2 Under round: Vent piping placed underground shall be cast-iron pipe. 21.1.3 Main Stack: Every building in which plumbing is installed shall have at least one main stack, which shall run undiminished in size 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 roof is to be used for any purpose other than weather 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 te:: .:l ;=. ,,n a drainage sys- tem shall be directly beneath any door, window, or other ventilating opening of the building or of an adjacent building nor shall PUY :; ch vent terminal be within 10 feet horizontally of such an opening unless it is at lcast 2 feet above the top of such opening. - 40 - 21.1.6 Flashings: .Points at the roof around vent pipes shall be made watertight by the use of flashings. Such flashings shall be made of lead or copper. 21.1.7 Flag Poling: Vent terminals shall not be used for the purpose of flag poling, TV 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 grav- ity. 21.1.9 Vertical Rise: Where vent pipes connect to a horizontal soil or waste pipe, the vent shall be taken off above the center 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 it is venting before offsetting horizontally or be- fore 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 inaccessible 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_Traps: Traps serving sinks which are part of the equipment of bars, soda fountains, and counters need not be vented when the location and construction of such bars, soda fountains, and counters are such as to make it impossible to do so. When such conditions exist, such sinks shall discharge into a floor sink or hopper which 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 con- tinuous vent pipe, provided that each fixture wastes separately into an ap- proved double fitting having inlet openings at the same level. (See Para- graph 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 admission or emission of air so that under normal and intended use the seal of any fixture trap shall not be subjected to a pressure differential of more than 1 inch of water. 21.1.14 Trap Dip: The vent pipe opening from a soil or waste pipe, ex- cept for water closets and similar fixtures, shall not be below the weir of the trap. 21.1.15 Crown Vent Prohibited: No crown vent shall be used nor shall any vent connection be made within 2 pipe diameters of the trap weir. -41 - 21.1..1.6 Determining Length of Vent Stacks: The length of the vent stack or main vent shall be its developed length from the lowest connection of the vent system with the soil stack, waste stack, or building drain to the vent stack terminal, if it terminates separately in the open air, or to the con- nection 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. 21.2 FIXTURE TRAP VENTS 21.2.1 Distance of Trap From Vent: Each fixture trap shall have a pro- tecting vent so located -that the slope and the developed length of the fix- ture drain from the trap weir to the vent fitting are within the limitations set forth in Paragraph 21.2.2. 21.2.2 Distance of Fixture Trap From Vent Table: Size of Fixture Distance Trap to Vent Drain Inches) Feet Inches Max. Slope per Ft. l� 3 6 1„ 2 . . . . . . . *(1) 5 0 3 . . . . . . . 6 0 3 4 . . . . . . . . . 10 0 n *(1) lz4' developed length allowed on washing machine; 71 developed length allowed on tub and/or shower; 14' developed length allowed on condensate drain. 21.3 COMMON VENT DEFINED 21.3.1 This is a vent connecting at the junction of two fixture drains and serving as a vent for both fixtures. An individual vent, installed ver- tically, may be converted to a common vent for two fixture traps when both fixture drains connect with a vertical drain at the same level. 21.4 WET VENTING AND STACK VENTING 21.4.1 Single Bathroom Groups: A single bathroom group of fixtures may be installed with the drain from a back -vented lavatory, 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 diameter 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 con- nect to the water closet bend. - 42 - 21.4.2 Size of Vent Stacks: Diameter of dent Number of Wet -Vented Fixtures Stacks (Inches) 1 or 2 bathtubs or showers . . . . . . . . 2 ?6 3 to 5 bathtubs or showers . . . . . . . . 232- 6 to 9 bathtubs or showers . . . . . . . . 3 10 to 16 bathtubs or showers . . . . . . . . 4 21.5 INDIVIDUAL FIXTURE REVENTING 21.5.1 Horizontal Branches: One sink and 1 lavatory, or 3 lavatories within 8 feet developed length of a main -vented line, may be installed on a 2 -inch horizontal waste branch without reventing, 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 k -inch per foot. 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 in- to 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 ver- tical branch shall be provided with a continuous vent. All blowout type fix- tures shall be individually vented. 21.6.2 Vent Connections: When the circuit, loop, or relief vent connec- tions 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 X or a sanitary cross in a vertical position, a common vent for each two fixtures back-to-back or double connec- tion shall be provided. The common vent shall be installed in a vertical position as a continuation of the double connection. See Paragraph 21.3.1. 21.6.4 Pipe Sizes for Circuit or Loop Vent Systems: Diameter of Circuit or Loop Vent (Inches) 2� 3 4 5 Horizontal Soil or Waste Pipe Fixture Units Maximum Horizontal Length Diameter (Inches) (Maximum No.) ®_ __(Feet)R� 4 100 20 52 200 4 200 18 50 180 5 300 12 50 180 6 580 10 40 140 - 43 - 21.6.5 Size and Length of Vents: Size of Fixture soil or Units Diameter of Vent waste Stack. Connected 11 lz 2 22 3 4 5 6 8 (inches) 2 Maximum Developed Length of Vent (in feet) �2 8 150 2 12 75 310 2 24 70 300 21 42 35 140 3 30 20 80 3 60 18 75 4 100 1000 35 4 250 70 30 4 500 22 5 550 320 1000 5 1100 20 50 6 750 6 20 95 240 8 18 8 180 750 10 30 80 10 1100 CHAPTER 22 GAS PLUMBING 22.1 TESTING AND INSPECTION 450 260 650 240 600 100 260 1100 95 240 1000 70 1.80 750 28 70 320 1000 20 50 240 750 20 95 240 1000 18 70 180 750 30 80 350 1100 25 60 250 300 30 80 350 25 60 250 22.1.1 Testing Procedure: 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 mer- cury is supported by the air pressure for at least 15 minutes, during per- iods of constant temperature, the piping shall be considered tight. 22.1.2 Prohibited Methods of Testing: Water will not be used in test- ing gas piping far leaks and piping into which water has been introduced will not be approved, but will be condemned as faulty. 22.1.3 Fire Test Prohibited: A fire test is not permitted under any circumstances on inside work. 22.1.4 Gas System Inspection: When the plumber has completed the sys- tem of piping gas and has all branch and bracket extensions and heater openings firmly and permanently fastened, he shall make application for inspection and the Plumbing Inspector will call and inspect the piping - 44 - perform 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 inspection and attach an inspection tag to the work. 22.2 GENERAL REGULATIONS 22.2.1 New Materials Required: All pipe used for the installation, extension, alteration or repair of any gas piping inside of buildings shall be new, standard weight wrought iron, black steel, or galvanized steel, free from splits, internal obstructions, or other defects. (Revised Ord.#369,Sept.26,1967) Burred ends shall be reamed to the full bore of the pipe. 22.2.2 Outside Gas Lights: Type 'TK" copper tubing may be used for un- derground piping in outside gas light installation. 22.2,3 Underground House -Pipe Lines: Service lines installed underground shall be type "X," or "K" copper, or an approved type mill -wrapped pipe. Minimum mill coating will provide mechanically cleaned pipe; a coal tar primer; a. flood coat of semi -plasticized coal tar to an average thickness of 3/32 inches; spirally applied 15 pound asbestos coal tar pipeline felt; and spirally applied 30 pound kraft paper. 22.2.4 melded Joints: Welded joints may be used whereever 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 galvan- ized 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 reducingcouplingsare to be preferred to bushings. When bushings must be used, they should reduce no less 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. 22.2.5 Insulated Connections: All connections between ferrous and non- ferrous piping, except appliance connections, shall be made by the use of dielectric couplings or unions. 22.2.9 Pipe Supports: All house piping shall floor joints or sills with either galvanized pipe with perforated pipe straps, and in such a manner sagging and becoming trapped. - 45 - be securely fastened to straps or pipe hooks, or as to prevent pipe from 22.2.10 Proximity to Electric Wire: No gas pipe shall be run closer than six inches tp any electric wire unless such electric wire be inside a conduit. 22.2.11 Branch and Extension Piping: Gas must not be supplied from a smaller pipe to a larger one. All branch outlet pipes shall be taken from top or sides of main supply lines and never from below. 22.2.12 [Ender round 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 22.2.16A and 22.2.16B. 22.2.13 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 accessible and suitable drip. 22.2.14 Accessibility of Concealed Piping: Gas piping shall not be run in floor, or _hro.Z;h heating, cooling, or ventilating ducts, elevator shafts, furnaces, refrigerating rooms, drying ovens or in any place where proper ventilation cannot be continuously provided. 22.2.15 _Aitch 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. 22.2,16 Gas Piping in Floors: Where the Plumbing Inspector determines that there is no way to avoid the installation of piping in solid floors, then one of the following methods of installation, 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 casing shall extend at least 2 inches beyond the point where the pipe emerges from the floor. Where required, the casing shall be vented to the outside atmosphere and/or coated as specified in Paragraph 22.2.13. B. House piping may be installed in a channel in the floor. Such channel is to be suitable covered so as to permit ready access to the piping and prevent the entrance of corrosive materials, or it may be filled with some non- corrosive material which can be removed with a minimum of damage to the floor. C. Paragraphs 22.2.16A and 22.2.16B apply to gas pipe in solid floors, walls and ceilings. Gas pipe in stud walls, ceilings or floors of joist construction need not have any protective covering. - 46 - 22.2.17 Joint Comound: 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. 22.2.18 Three -Way Valves: Three. -way valves shall not be permitted. 22.2.19 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 � inch kZ inch 3/4 inch 1 inch 1; inch lk inch 2 inch 2� inch 3 inch openings pipe pipe pipe pipe pipe pipe _.pi]ae pipe 1 27 50 2 300 50 3 100 24 4 300 400 5 100 150 6 300 400 8 100 150 10 300 400 13 100 150 15 300 400 18 60 150 20 300 400 23 45 120 25 300 400 30 65 35 300 400 40 42 50 300 400 65 75 300 400 70 100 150 200 300 400 70 100 150 200 300 400 70 100 150 200 300 400 50 100 150 200 300 400 35 100 150 200 300 400 60 150 200 300 400 45 120 200 300 400 65 200 300 400 42 175 300 400 120 300 400 90 270 400 70 210 400 55 165 400 45 135 330 80 200 60 150 50 125 80 50 35 22.4 STOVES AND OTHER APPLIANCES 22.4.1 Prohibited Location of Water Beater: No water heater which depends on the combustion of natural gas for heat shall be installed 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 pro- vided with a lever handled stop cock located in the riser above the floor, and on the upstream side of the union, at the appliance. Such stop cock shall be readily accessible at all times. - 47 - 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, nor less than outside diameter. C. Hot plates, clothes dryers, room heaters, refrigerators, domestic gas ranges, and similar equipment, shall be con- nected 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 con- nector or a connector of flexible metal tubing and fit- tings is used, it shall connect to an outlet in the same room as the appliance. The length of the connector shall not exceed 6 feet. The connector shall be installed so as to be protected against physical damage. 22.4.4 Prohibited Connections: The connection of an appliance with any type of gas hose is prohibited, except when, used with laboratory, 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 build- ing piping. Where gas hose 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. Linder no cir- cumstances shall gas hose be concealed from view or used in a concealed lo- cation. 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 subject to excessive temperatures (above 1250 F.). 22.4.5 Canopies_and_Vents in Hotels, Restaurants, Etc.; A. Ranges, hot plates, etc. used in hotels, restaurants, and ham- burger stands where gas is used for fuel, must be provided with canopies properly vented into brick, the 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. - 48 - 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 pantry used for the storage of clothing, household goods or any combustible material. 22.4.6 Draft Diverters Required: Water heaters and gas appliances 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 extend 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 ap- proved 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 re- quirements 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 appliance has been designed for use with the gas to which it will be connected. No attempts shall be made to convert the appliance from the gas specified on the rating plate for use with a different gas without consulting the local gas company or the manufacturer for complete instructions. 22.5.3 Permissible Temperatures on Combustible Materials: All gas appliances and their flue or vent connectors shall be installed so that con- tinued or intermittent operation will not create a hazard to persons or property. They shall not, during operation, raise the temperature of un- protected combustible walls, partitions, floors, or ceilings more than 900 F above normal room temperature when measured with mercury thermometers or conventional bead type thermocouples. 22.6 AIR FOR COMBUSTION 22.6.1 Gas and Liquid Fuel Heating Units: A. All floor furnaces, suspended heating units, central heating units and all controls shall be approved by the A.G.A. or the national Board of Fire Underwriters. The American Gas Association, Inc. Laboratories and Underwriters" Laboratories, Inc. are such nationally recognized testing agencies. - 49 - All floor furnaces, central heating units, suspended heating units, and boilers used for heating equipped with manually operated or automatic temperature controls shall be equipped with safety pilot controls that will shut off the gas to the main burner in the event the pilot is extinguished or blown out. All heating units with a fan to furnish heated air to various rooms in a house or building shall be equipped with a heat limit control switch located in the discharge side of duct and as near the heat- ing unit as possible, and connected so that a failure in pilot will shut off the gas supply to the main burner. In the event of fan or motor failure, the heat limit control switch will act as a limiting protection device. Said heat limit control shall be such type that it cannot be set above 2500 F. No heating unit or controls shall be placed in a closet, room or any other enclosed space without providing ventilating openings at both top and bottom of enclosure equivalent to 12 square inches for appliances having 40,000 B.T.U. input or less, and 1 square inch additional per 1,000 B.T.U. input shall be provided both top and bottom for appliances having more than 40,000 B.T.U. input. Inlet and outlet ducts shall be connected to heating units located in such enclosed spaces. Ducts shall be constructed of metal and shall ex- tend through the wall of the enclosure, and connect to the grill openings. Manufacturers installation instructions must be complied with regarding clearances and venting. A gas fired unit heater with propeller fan attached shall not be used as an insert type of duct heater. A unit heater shall not be attached to a warm air duct system unless listed by A.G.A. for such installation. All heating appliances equipped with a gas regulator or a gas operated diaphram valve shall have a relief or vent line installed from the regulator of diaphram valve back to the main burner of the appliance. B. Duct Furnaces: The heating unit shall be listed as a Duct Furnace by the A.G.A. The unit shall be equipped with the following controls: Pressure regulator, approved automatic heat limit control that cannot be set higher than 2500 F., and safety pilot burner control connected to control on the main burner in case of failure of blower motor or belt. Controls will shut off the main burner gas supply in event of overheating, safety pilot failure or motor or belt failure. The heat exchanger shall be highly resistant to acid and moisture and shall be non -corrodible. The heating unit shall be installed on the discharge side of the blower. The blower used with the unit shall have sufficient capacity to deliver the required volume of air against the combined static resistance of the unit and the duct system. - 50 - When installed in connection with a cooling system, the heating unit shall be installed in a by-pass duct around the cooling system with slide type dampers on each side of the heating unit. Removable inspec- tion plates not less than 6 inches wide and 2/3 the height of the duct in size shall also be installed on each side of the heating unit. The heating unit shall be installed at least 3 feet from any wall or ceiling or any other combustible material, and at least 1 foot above the floor and shall be accessible on all sides at all times. Devia- tion from this requirement will not be permitted except by written approval from the Chief Plumbing Inspector. The above shall not apply if Manufacturer's seal or stamp shows clear- ances. In such case the Manufacturers specifications shall apply. C. Attic Furnaces: A heating unit installed in an attic space shall be approved as an Attic Furnace by the A.G.A. and the unit shall be equipped with controls as specified for duct furnaces. The heating unit shall be installed at least 1 foot from any ceiling or roof. There shall be at least 3 feet clearance on the control and access side of the furnace. The area where an attic furnace is located shall be floored and shall extend a distance not less than 3 feet from all sides of the unit. A means of access shall be provided with a perma- nent ladder or stairway and with an unobstructed passage to the ser- vice side of the furnace. D. Below the Floor Heating Units: The heating unit shall be approved as a Below the Floor heating unit by the A.G.A. The unit shall be equipped with controls and shall be accessible as specified for Attic Furnaces. There shall be at least 3 feet horizontal clearance on control and access side of unit. 22.7 PRESSURE REGULATORS 22.7.1 Venting Requirements for Pressure Regulators: Gas appliance pressure regulators requiring access to the atmosphere for successful oper- ation shall be equipped with a vent pipe leading into the combustion chamber adjacent to a constantly burning pilot, unless constructed or equipped to limit the escape of gas from the vent opening in the event of diaphragm fail- ure to not more than. 1.0 cu. ft. per hr. of a 0.6 sp-gr gas at 7 inches water column pressure. 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 -.ha operation of the thermal element. The terminus of the vent shall be securely held in a fixed position relative to, and approxi- mately � inch below, the pilot flame. 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 specifi- cally authorized by the Plumbing inspector, providing they are properly vented and are supplied with adequate combustion air. - 51 - 22.8.2 Location: Water heaters shall be located as close as prac- ticable 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 ac- cordance with Table 22.8.4. In no case shall the clearance be such as to interfere with the requirements for combustion 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. Combus- tible floors under unlisted water heaters shall be protected in accord- ance with the Plumbing Inspector's instructions. 22.8.4 Minimum Clearances for Listed Gas -Fired Water Heaters: Distance From Combustible Construction Type of Inches 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 - Under.fired, insulated automatic storage heaters. Type C - Type B units with one or more flat sides and tested for installation flush to wall. 22.9 CENTRAL HEATING BOILERS AND FURNACES 22.9.1 Independent Gas_ Piping: The gas line shall be a separate line direct from the meter td 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: Vv ere 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 util- ized, a manual main shut-off valve shall be provided ahead of all con- trols. 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 per- mit removal of the controls. - 52 - 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 require- ments 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 Draft ADDliance Above and :ear Font good 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 and with an ap- proved 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. 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 'vo 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 ventilated attic, underfloor space or open air, shall be provided to any confinerl space which encloses the floor furnace. The duct or grille shiill 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 such a manner as to insure proper combustion. 22.10.4 Placement: The following are requirements for properly 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 audi;.orium, public hall, or place of assembly or in an exit -way from any such room or space. B. [falls and Corners -- with the exception of wall -register models, a floor furnace shall not: be picccd closer than -- 53 - 6 inches to the nearest wall, and wall register models shall not be placed closer than 6 inches to a corner. 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 furnace is sealed by the manufacturer to prevent entrance of water, the clearance may be reduced to not less than 2 inches. IJhen these clearances are not present, the ground below and to 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 un- obstructed passageway to the floor furnace of at least l8 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 clear- ances on all sides except the control side, which shall have 18 inches clearance. tdhen the equipment is sealed by the manufacturer to meet this condition, the pan or pit may be omitted if not required for main- taining 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 com- pletely (entirely separated from the non -habitable space) with means for air intake to meet the provisions of Paragraph 22.10.3 with access facilities for servicing on the control side, with minimum furnace clearances of 6 inches to all sides and bottom, and with the enclo- sure constructed of portland cement plaster on metal lath or material of equal fire resistance. - 54 - 22.11 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 in- stalled 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 installed in accordance with their listings, In no case shall the clearance be such as to interfere with the requirements for combustion 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, Paragraph 22.11.3. Combus- tible 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 instruc- tions. 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, boil- ers, AGA appliances having down draft diverters, 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 Ty e 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 or other listed type of vent approved by the Plumbing Inspector, except that single wall metal pipe may be used in venting a water heater from the draft diverter to a point at least three inches below the ceiling. 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 - 55 - horizontal displacement. Vent stacks shall extend continuously through the roof to a point not less than 15 inches above same. 22.12.4 Industrial or Public Buildings: In buildings used for com- mercial, 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 reduce 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 REQUIREMa7TS 22.13.1 Draft Hood -to -Vent Reductions; Vents for draft hoods 12 inches in diameter or less shall not be reduced. For larger gas burn- ing equipment, such as boilers, having draft hood sizes from 14 to 24 inches in diameter, reductions of more than 2 pipe sizes are not recom- mended. (24 -to -20 -inch is a 2 -size reduction.) 22.13.2 Combined Vents: A "combined" vent is a venting system for two or more appliances at one level attached to a common vent. The Com- mon Vent must always be at least as large as the largest connector. If both connectors are the same size, the common vent must be at least one size larger. 22.14 ELECTRICAL, CONNECTIONS 22.14.1 National Electrical Code: All electrical connections be- tween gas appliances and the building wiring shall conform to the Na- tional Electric Code, ASA 01, 1962. 22.14.2 Electric Ignition and Control Devices: No devices employ- ing or depending upon an electrical current shall be used to control or ignite a gas supply if of such a character that failure of the elec- trical current could result in the escape of unburned gas or in failure to .reduce the supply of gas under conditions which would normally re- sult in its reduction unless other means are provided to prevent the de- velopment 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 circuit or lightning arrester, nor shall electric circuits utilize gas piping, casing of controls, panels or other metal parts in lieu of wiring. This provision shall not apply to low voltage control and ignition circuits, and to electronic flame detection device circuits incorporated as part of the appliance. - 56 - 22.15 APPLIANCE WITH ACCEPTED STANDARD 22.15.1 National Standard: All work installed under the Gas Fit- ting Section of this code shall comply to the standards of the National Board of Fire Underwriters for the installation of gas piping and gas appliances in buildings as recommended by the National Fire Protection Association, a pamphlet normally referred to as NBFU Pamphlet No. 54. CHAPTER 23 TRAILER PARK PLUMBING AND DRAINAGE SYSTEMS 23.1 GENERAL 23.1.1 Adherence to Code: Trailer park plumbing and drai 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 -5feet 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 possible fu- ture 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 vented drainage system shall be provided with a vent not more than 15 feet downstream 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 system shall be not less than 3 inches in diameter and it need not be larger than 4 inches in diameter. 23.2.6 Prohibited Wet Vents: The drainage system of any building shall not discharge into a wet vented line. No building, or house, sewer shall serve as a wet vent. 23.2.7 Vent Supports and Protection: Vents shall be securely fas- tened to 4 x 4 redwood post or have equivalent support. Galvanized iron or galvanized steel vents may be anchored in a substantial con- crete 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 vend pipe, steel or iron, may extend be- low ground vertically and may directly intersect a drainage line, pro- viding the entire section around the vent pipe and drainage line is encased in concrete to prevent movement. Galvanized 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 puts: 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 fittings shall not be less 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 part{ drainage system shall be sized as provided in Paragraph 23.2.10. 23.2.10 Pipe Sizes for Trailer Park Drainage System: Max. No. Trailers Max. No. Trailers Individually Vented `s{1et Vented Size of System System Drain 2 1 *3rr 30 10 4" 100 s0 6" 400 :; 8" The maximu.:i 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 ReauiremcTiits: Each trailer park water distributing system shall conform to the requirements of Chapter 19 and shall be so designed and maintained as to provide a residual pressure of 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" inside diameter. 23.3.3 Protection From Cross Connections: An approved combina- tion vacuum breaker and check valva shall be installed on the water supply branch at, or near, the trailer connection. 23.3.4 Relief Valves:In approved pressure relief valve shall be installed immediately on the discharge side of each vacuum breaker and check valve. 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 -of-' valve shall be installed between a relief valve and the trailer it crves. 23.3.5 Shut-off Valves: A shiit-off valve shall be installed immed- iately upstream from, the combination vacuum breaker and relief valve. 23.3.6 Ditch: Water pipe sha] l 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: Whezi it is evident that there exists, or 59 - may exist, a violation of any pertinent regulation, the owner, lessee, operator, person in charge of the park or any person causing a viola- tion, 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. 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 maintenance. CHAPTER 24 PENALTY AND CLOSING PROVISIONS 24.1 PROHIBITING WORK WITHOUT A PERMIT: No person, firm or corpora- tion or other entity shall install or perform any plumbing work as de- fined in this Code without first having secured a permit in accordance with the provisions of this Code. 24.2 PROHIBITING USE OF UNTESTED INSTALLATIONS: No person, firm, cor- poration or other entity shall cause or permit any plumbing installation to be connected with the City water or sewer system or to any gas dis- tributing system nor shall such person, firm, corporation or other en- tity 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 herein provided. 24.3 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 conviction of any such violation, shall be fined in any sur: not to exceed TWO HUNDRED DOLLARS ($200.00); 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 busi- ness of such corporation shall be subject to the penalty herein pro- vided. Any offense defined herein which has been defined by laws of the State of Texas as an offense and for which penalty has been pre- scribed shall be punished as provided in said State Law, and nothing herein shall be held as fixing any penalty contrary to a penalty pro- vided by the laws of the State of. Texas. 24.4 FORM OF COMPLAINTS: In any prosecution hereunder, it shall not be necessary for the complaint to negative any exceptions contained in this Code concerning any prohibited act, but any such exception may be urged as a defense by any person charged by such complaint. 24.5 RESPONSIBILITY FOR REFECTS UNCHANGED: This Code does not re- lieve from or lessen the responsibility or liability of any person owning, operating, controlling, or installing any plumbing, gas piping or gas-fired appliances, for damages to person or property caused by may exist, a violation of any pertinent regulation, the owner, lessee, operator, person in charge of the park or any person causing a, viola- tion, 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. 23.5.2 Maintenance: All required devices or safe guards shall be maintains in goo working order. The owner, operator, lessee or his designated agent shall be responsible for their maintenance. CHAPTER 24 PENALTY AND CLOSING PROVISIONS 24.1 PROHIBITING WORK WITHOUT A PERMIT: No person, firm or corpora- tion or other entity shall install or perform any plumbing work as de- fined in this Code without first having secured a permit in accordance with the provisions of this Code. 24.2 PROHIBITING USE OF UNTESTED INSTALLATIONS: No person, firm, cor- poration or other entity shall cause or permit any plumbing installation to be connected with the City water or sewer system or to any gas dis- tributing system nor shall such person, firm, corporation or other en- tity 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 herein provided. 24.3 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 conviction of any such violation, shall be fined in any sure. not to exceed TWO HUNDRED DOLLARS ($2o0.00); 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 busi- ness of such corporation shall be subject to the penalty herein pro- vided. Any offense defined herein which has been defined by laws of the State of Texas as an offense and for which penalty has been pre- scribed shall be punished as provided in said State Law, and nothing herein shall be held as fixing any penalty contrary to a penalty pro- vided by the laws -of the State of Texas. 24.4 FORM OF COMPLAINTS: In any prosecution hereunder, it shall not be necessary far the complaint to negative any exceptions contained in this Code concerning any prohibited act, but any such exception may be urged as a defense by any person charged by such complaint. 24.5 RESPONSIBILITY FOR DEFECTS UNCHANGED: This Code does not re- lieve from or lessen the responsibility or liability of any person 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 assuming any such liability by reason of the inspection authorized herein or certificate of approval issued as herein provided. 24.6 SEVERABILITY CLAUSE: If any provision of this Code, or the ap- plication thereof to any person or circumstances, is held invalid, the remainder of the Code, and the application of such provision to other persons or circumstances, shall not be affected thereby. 24.7 REPEALING CLAUSE: All ordinances or parts of ordinances in con- flict herewith are hereby repealed. 24.8 EMERGENCY CLAUSE: The fact that it is to the best interest of the City and its inhabitants constitutes a measure for immediate preservation of the public peace, property, health and safety of the City and its inhabitants and creates an emergency requiring this ordinance be passed as an emergency measure on the day of its introduction and that this ordi- nance be effective from and after its passage, and it is so ordained. PASSED AND APPROVED this !` `qday of > �. -4.1 ', 197 �: ATTEST: Town Secret y - 61 - APPROVED: Mayor.