The drainage system of every house or building shall be separately and independently connected with the city sewer, except that fixtures in outhouses and auxiliary buildings on the same lot may be connected to the main building sewer. This provision shall also apply when two (2) dwellings are erected on the same lot, one behind the other.
(1987 Code, sec. 5-201)
When there is no city sewer available, an approved septic tank shall be used with the approval of the city health department. Application for the use of a septic tank must be made to the city health department and the installation of such septic tank shall be under the supervision of the city sanitary engineer. Plans and specifications for septic tanks shall be obtained from the city health department.
(1987 Code, sec. 5-202)
Old house plumbing may be connected to the city sewer only when it is found on examination by the plumbing inspector to conform in all respects to the requirements of this division. When making additions or extensions to old buildings where the house sewer is under such extensions thereby making the house sewer a part of the house drain, such portion, if of any material other than cast iron, shall be removed and replaced with cast-iron soil pipe to a point two (2) feet outside of the new building line.
(1987 Code, sec. 5-203)
No person shall tap into or connect with any public sanitary sewer, or connect or cause to be connected any plumbing to such public sewer or to any house drain or house sewer leading to such public sewer, without first obtaining the proper permits for such purpose and having the work approved by the plumbing inspector.
(1987 Code, sec. 5-204)
It shall be unlawful for the owner, occupant or person in control of any premises to discharge, or permit to be discharged, into the city sanitary sewer system or into any private sewer leading to such system, directly or indirectly, any gasoline, benzine, naphtha or other volatile liquids which are likely to produce an explosive gas when exposed to the air, or any strong acid, alkali, oil, tar or other substance or compound, the action of which will be detrimental to the proper purifying action in any sewage treatment plant established or operated by the city, or that will be injurious to the sewer system or such plant itself, or any vapors, gases or fumes from any commercial or industrial occupation or business, or any commercial or industrial water or refuse.
(1987 Code, sec. 5-205)
Water from any car-washing rack must not enter the sanitary sewer or storm sewer unless an approved sand trap is used. Specifications of the same may be provided by the plumbing inspector.
(1987 Code, sec. 5-206)
House sewers shall be run in practical alignment and grade of not less than one-eighth of an inch fall per foot, and shall have a cover of not less than six (6) inches at the building and at least twelve (12) inches below the established gutter grade of any street or alley at the point where such sewer line crosses the property line to connect with the sewer main.
(1987 Code, sec. 5-207)
Durion pipe and fittings or other approved acid-resisting materials may be used where required to resist acids.
(1987 Code, sec. 5-208)
All soil pipes receiving discharges from fixtures and all vent lines must be of standard cast-iron, brass pipe (iron pipe sizes and weights) with standard pipe thread with recessed drainage fittings, hard-tempered copper tubing with cast brass recessed drainage fittings, hard-tempered copper tubing with cast brass recessed drainage fittings, lead pipe not lighter than seven (7) pounds fourteen (14) ounces per foot for four (4) inches, and four (4) pounds twelve (12) ounces per foot for two (2) inches, or plastic (schedule 40 PVC and SDR 35). All copper under slab must be type L. All soil pipes shall be considered in the building until connected at a central point to the building sewer.
(1987 Code, sec. 5-209)
Cast-iron soil or vent pipes shall be of the bell-and-spigot type and the joints shall be firmly packed with oakum and secured with molten lead not less than one inch deep, and caulked until perfectly tight joints are secured. All joints on lead pipe, or between lead and brass pipe, must be wiped joints, known to the plumbing trade as round or branch pipe joints. The drilling and tapping of house drains, waste or vent pipes and the use of saddle hubs and bends are prohibited.
(1987 Code, sec. 5-210)
All changes in direction shall be made by the use of wyes, combination wye and eighth bends, long-sweep quarter bends, sixth, eighth or sixteenth bends. Sanitary tees and crosses may be used only in vertical lines. Quarter bends may be used in soil and waste lines where the change in the direction of flow is from horizontal to vertical. The foot of all stacks shall have a wye and eighth bend, combination wye and eighth bend, long sweep quarter bends or two (2) eighth bends where the change is from vertical to horizontal.
(1987 Code, sec. 5-211)
Tapped tees may be used in vertical stacks for lavatories or sinks or tapped cross from two (2) fixtures of the same trap level. All arms must be of L weight copper, brass or lead. Where copper is used, all fittings must be sweated. When lead is used, if solder nipple is used, it must be wiped to lead and flange wipe joint where trap is wiped in. No tubular traps are to be used unless the flange is wiped or sweated. One (1) lavatory or one (1) sink may enter a four-inch vent stack by means of a tapped fee, or two (2) of these fixtures by means of a tapped cross. All sink arms shall be of one and one-half inch pipe, only one (1) fixture allowed on each arm. The lavatory arm may be one and one-quarter inch pipe. No arm shall be longer than thirty (30) inches. A single lavatory may be vented with one and one-quarter inch copper pipe where waste is of one and one-half inch copper pipe.
(1987 Code, sec. 5-212)
All horizontal soil and waste pipes must be graded and given uniform fall, and if located above the ground must be supported by piers built of masonry or suspended from beams or joists every five (5) feet in back of hubs by iron hangers of not less than eighteen (18) gauge metal.
(1987 Code, sec. 5-213)
Every building in which a water closet is installed shall have at least one (1) three-inch soil pipe waste and vent stack and shall continue its full size to at least twelve (12) inches above the roof and not less than ten (10) feet above the ground, except on an all-copper plumbing system which may be one (1) size smaller and in accordance with the Standard Plumbing Code.
(1987 Code, sec. 5-214)
Ferrules shall be of a good quality of brass, composed of a mixture that will fuse readily with plumbers’ solder, free from sand holes, flaws or other defects, uniform in thickness, at least four and one-half (4-1/2) inches long, and of the following sizes and weights:
Inside Diameter
Weight
2 inches
1 lb. 4 oz.
3 inches
1 lb. 14 oz.
4 inches
2 lb. 8 oz.
(1987 Code, sec. 5-215)
The lead traps, bends and stubs shall be six (6) pounds per square foot and there shall not be less than four (4) inches of lead between the wiped joint and the finished floor. All lead bends under closet bowls shall be of not less than four-inch pipe.
(1987 Code, sec. 5-216)
A four-inch cleanout plug fitting must be on the house drain two (2) feet outside the building brought up flush with the top of the ground and visible. Sink cleanouts must be exposed on the outside wall. No tapped tees shall be used as a cleanout fitting.
(1987 Code, sec. 5-217)
All revents may be of one and one-half inch copper for minor fixtures from the waste tee through the roof or tied into the vent stack. All washing machines connected to a sanitary sewer shall be connected by means of a proper trap and shall be vented except where a trap is installed in a sink line by means of a Y or TY when the inlet opening of said trap is not over thirty (30) inches off the sink line. The trap shall have an accessible cleanout at the trap. The drain line from the trap to the machine must not be less than one and one-half inch copper or cast-iron pipe and not over sixteen (16) feet long.
(1987 Code, sec. 5-218)
Every fixture having a waste pipe shall be separately and independently trapped with a water-sealing trap placed as near the fixture as practical and not more than thirty-six (36) inches from the fixture, except that a set of not more than three (3) laundry traps or lavatories may connect with a single trap. No fixture shall be double-trapped.
(1987 Code, sec. 5-219)
Every trap shall be protected from siphonage or air pressure and if over thirty-six (36) inches from a continuous vent shall be separately vented, except that each battery of two (2) to eight (8) fixtures connected in series consisting of water closets or urinals in toilet rooms on the same floor may be installed with a system of loop venting by bringing a vent the same size as the waste line up between the last two (2) fixtures and returning full size to the main vent stack not less than forty-two (42) inches above the floor, or continuing separately through the roof full size, thus forming a circuit vent system. Where fixtures discharge above such branch, each branch shall be provided with a relief vent at least one-half the diameter of the soil or waste branch, taken off in front of the first fixture connection.
(1987 Code, sec. 5-220)
When an additional closet is set on a four-inch branch waste line thirty (30) feet or less in length from a main house drain or soil line within the same building, it may be vented with a two-inch vent. One (1) minor fixture, except a kitchen sink waste, will be permitted to enter such vent line.
(1987 Code, sec. 5-221)
Two (2) fixtures of the same type whose wastes enter the stack by means of a sanitary cross may have a common waste and vent and each fixture shall be individually trapped.
(1987 Code, sec. 5-222)
Crown venting shall be avoided. A heel-inlet quarter bend may be used when venting a closet if used in a vertical position. When it becomes necessary to flat-vent a trap, such as under floors, the flat vent shall be carried to the nearest partition or wall and changed to the vertical. All horizontal vents below the floor shall be constructed of copper or cast-iron pipe. When a vent pipe from a trap is connected into another vent, the connection shall be made at least one (1) foot above the highest fixture.
(1987 Code, sec. 5-223)
Stacks and vents shall not terminate underneath cornices or in chimney flues, but shall extend through the roof and terminate not less than twelve (12) inches above the roof and be properly flashed, or when the roof is used for purposes other than weather protection, then such vent shall not be less than five (5) feet above such roof. Vent pipes shall be run as directly as possible, and the proper fittings must be used at all changes of direction.
(1987 Code, sec. 5-224)
All pipes or stacks passing through the roof shall be flashed with sheet lead of not less than two and one-half (2-1/2) pounds to the square foot and turned into the top of the pipe or into the bell and caulked, or ten-ounce copper, properly fitted and counterflashed. Where copper pipe is used and it terminates more than one (1) foot above the roof, the flashing must be strapped at the top with a metal strap and bolted or counterflashed.
(1987 Code, sec. 5-225)
Tub and shower traps may be cast-iron P traps properly installed and vented, and may be wet vented through a lavatory.
(1987 Code, sec. 5-226)
Drinking fountains shall be constructed of impervious material such as vitreous china, porcelain, enameled cast-iron or other noncorrosive metals or stoneware. The jet of the fountain shall issue from a nozzle of nonoxidizing, impervious material set in the jet to the orifice from whence the jet issues. The nozzle and every other opening in the water pipe or conductor leading to the nozzle shall be above the edge of the bowl, so that such nozzle or opening shall not be flooded in case a drain from the bowl of the fountain becomes clogged. The end of the nozzle shall be protected by nonoxidizing guards to prevent the mouth and nose of any person using the fountain from coming into contact with the nozzle. The waste opening and pipe shall be of sufficient size to carry off the water promptly and the opening shall be provided with a strainer.
(1987 Code, sec. 5-227)
All lavatories shall be provided with traps of not less than one and one-quarter (1-1/4) inches in diameter. Only one (1) lavatory shall be permitted on a one and one-fourth inch arm. A battery of lavatories up to three (3) will be allowed on one (1) trap not less than one and one-half (1-1/2) inches in diameter. All water services (spigots) must discharge at least three-fourths of an inch above the rim of the fixture.
(1987 Code, sec. 5-228)
All receptacles used for water closets, urinals or otherwise, for the disposal of human excreta, shall be constructed of materials impervious to moisture and that will not corrode, such as vitreous china, porcelain (all clay), or cast-iron enameled on the inside. All water closets or urinals shall be provided with a flushing rim, constructed so as to flush the entire interior surface of the bowl thereof with water from an approved tank or flush valve. A compression stop shall be placed in each water closet water supply, placed between the tank and the floor.
(1987 Code, sec. 5-229)
No device or fixture of any type of construction shall be installed which will provide a cross-connection between the water supply of a building and the sanitary sewer, or any other impure condition.
(1987 Code, sec. 5-230)
Slip joints, other than required expansion joints, shall not be used in drainage piping except in the waste pipe between a trap seal and its fixture.
(1987 Code, sec. 5-231)
Hopper closets, with cast-iron enameled inside traps attached, may be used in temporary construction toilets when installed in compartments which have no direct connection with a building used for human habitation or occupancy, and the water supply shall have a stop and waste cock placed outside of the building in an easily accessible place.
(1987 Code, sec. 5-232)
All closet bowls, except on wood floors, shall be set on a heavy brass closet ring or flange, weighing not less than one (1) pound, soldered to the lead bend or stub and screwed to the floor. All screws for water closet settings shall be of brass. Joints shall be made gastight with an approved gasket, setting compound, white lead putty or perfect screw joint.
(1987 Code, sec. 5-233)
The base of shower stalls installed in residences of wood construction shall be lined with sheet lead of not less than four (4) pounds to the square foot, and turned up on the sides to a height of not less than six (6) inches and made leakproof. The requirement for lead pans shall not apply to factory-made shower stalls provided such shower stalls are leakproof and watertight after installation. All lead pans shall have one (1) coat of asphalt paint, inside and outside, and shall be securely clamped to the drain with a drain clamp. In shower baths where installed in manufacturing establishments, shops, engine or boiler rooms, in basements or on any ground floor where the floors are concrete or tile, the above double draining fitting and lead pan need not apply.
(1987 Code, sec. 5-234)
Waste pipes from kitchen sinks in hotels, restaurants, clubhouses, boarding houses, public institutions, hospitals or other similar places shall be run into an approved type grease trap, adequate in size and constructed in such a manner as to remove all grease before it reaches the sanitary sewer and properly vented on the sewer side. Such grease trap shall be properly maintained in good working order and all collected grease shall be removed at regular intervals. Plans for a concrete grease trap may be obtained from the plumbing inspector. If the grease trap is set more than thirty (30) inches from the sinks which it serves, the sinks shall be locally vented and run independently through the roof.
(1987 Code, sec. 5-235)
(a) 
The waste from any refrigerator, either ice or mechanical, or other receptacle in which food is stored, shall discharge into an open fixture, which fixture may be connected directly to the drainage system when properly trapped and vented.
(b) 
Appliances, devices or apparatus not regularly classed as plumbing fixtures, but which have drips or drainage outlets, shall be drained by indirect waste pipes discharging into an open receptacle, or may drain into the system between a water-supplied fixture and its trap. Any waste pipe from such fixture exceeding thirty (30) inches in length shall be trapped.
(1987 Code, sec. 5-236)
Sinks in bars, soda fountains and other such establishments shall be drained to a common open fixture properly trapped and vented, located on the same floor and as near as possible to the bar or fountain in such a manner that it may be readily inspected and cleaned. The top of such fixture shall be set one (1) inch or more above the floor.
(1987 Code, sec. 5-237)
Floor drains shall be of a sufficient size and design to serve the purpose for which they are intended or used, and shall be not less than two (2) inches in diameter. All floor drains, except as noted below, shall enter the sanitary sewer or septic tank through an adequate catchbasin. The catchbasin shall not be less than eighteen (18) by eighteen (18) inches and twenty-four (24) inches deep inside measurements, with a seal of not less than ten (10) inches, properly vented on the sewer side and fitted with a tightfitting cast-iron frame and cover. Floor drains shall be provided with a deep seal P trap with a perforated metal strainer. Where the waste line from a floor drain to the catchbasin is over fifty (50) feet long, the last floor drain shall be locally vented and a cleanout placed on the end of the main line. Floor drains for private residences or private residence laundry rooms may enter the sanitary sewer or septic tank directly, provided they are properly trapped and vented.
(1987 Code, sec. 5-238)
All commercial water from commercial laundries, and all wastewater from poultry-dressing establishments and from fish and seafood markets, when such water is used in connection with the dressing, killing, cleaning, washing or handling of such poultry, fish or seafood, shall discharge into a trough not less than four (4) inches deep and six (6) inches wide. Such trough shall discharge into a catchbasin not less than twenty-four (24) by twenty-four (24) by thirty (30) inches, properly trapped and vented on the sewer side, and having a tightfitting solid cover and frame. In fish and seafood markets, the catchbasin shall also be vented with a two-inch vent which shall extend through the roof independent of any other vent.
(1987 Code, sec. 5-239)
No steam exhaust or blow-off pipe from a steam boiler shall be connected to any sanitary sewer. It shall discharge into a tank or condenser the waste from which, after being condensed, mayenter the sanitary sewers. The tank or condenser shall be properly trapped and vented on the sewer side of the tank or condenser and shall be locally vented with a two-inch vent which shall extend above the roof independently of any other vent.
(1987 Code, sec. 5-240)
Soil and waste pipes placed in any building for future use shall be ventilated, tested and subjected to the same rules in every respect as if intended for immediate use, and all openings shall be plugged and caulked or soldered.
(1987 Code, sec. 5-241)
A subhouse drain is that portion of the drainage system of a building which cannot drain by gravity into the city sewer. Subhouse drains shall discharge into an airtight sump or receiving tank located to receive the sewage by gravity. From the sump or receiving tank, the sewage shall be lifted and discharged by pumps, pneumatic ejectors or equally efficient methods automatically operated. When the lifting device forms a trap an additional trap on the drain may be omitted, but all fixtures and equivalent devices shall be trapped and vented. Receiving tanks (except in pneumatic systems) shall be provided with a vent pipe at least three (3) inches in diameter which may be connected to the gravity vent system. Pneumatic receiving tanks shall be provided with relief pipes at least two (2) inches in size, and the relief pipes shall be extended independently to the roof and terminated as required for vent pipes in this division.
(1987 Code, sec. 5-242)
There shall be a cut-off within six (6) inches from the water meter on the house service line to control all water in a building. The plumber shall furnish a six-inch nipple and coupling at the meter side of the stop. The service shall be of three-quarter inch galvanized or copper pipe to the bathrooms and not more than three (3) fixtures shall be supplied off a one-half inch pipe. All hot water pipes shall be of three-quarter inch galvanized or copper pipe from the heater to the bathroom. Water service and other underground pipe shall be buried at least twelve (12) inches to a point just under the building then may rise and be securely strapped to sills or floor joists at proper intervals. Each commode shall be controlled with a stop above the floor. Copper water pipe shall not be lighter than American Standard type L and shall be American Standard type K when placed under a slab floor, and shall be sleeved where it passes through the slab.
(1987 Code, sec. 5-243)
All fittings used in the water supply system shall be galvanized malleable iron fittings, galvanized cast-iron fittings, brass fittings, or copper or cast-brass sweat fittings. All connections and branches on lead services must be made by means of plumbers’ wiped joints. No pipes or fittings that have been used for other purposes shall be used for distributing water.
(1987 Code, sec. 5-244)
All water pipes shall be well reamed, and the plumbing inspector or his assistants may require a section of the pipe or fittings to be removed to see that it is properly reamed. If a section of the pipe is found to be improperly reamed, the inspector may require the whole system of piping to be removed until it has been properly reamed. Such work shall be done at the expense of the person installing the pipes.
(1987 Code, sec. 5-245)
(a) 
Water service lines for residences and apartment houses shall not be less than those prescribed in the following table; such sizes shall not apply where flush valves are used:
Number of Fixtures
Length of Run from Main to Building
(feet)
Size
(inches)
1 - 7
 
3/4
8 - 10
Up to 50
3/4
11 - 14
Up to 100
1
15 - 24
Up to 50
1
15 - 25
From 50 to 100
1-1/4
(b) 
For installations not covered by the table, sizes required will be specified by the plumbing inspector with the approval of the superintendent of the utilities department.
(1987 Code, sec. 5-246)
(a) 
When it is impossible to drain all cold water lines to the cutoff near the meter, then another compression stop and drain shall be placed in some accessible place on the low point of such line. All hot water lines in residences shall be provided with a drain cock located at some point outside the foundation walls and installed so that all water will drain out of the hot water lines.
(b) 
The service to each apartment house having more than one (1) water meter shall have a stop and drain and a six-inch nipple as described in section 3.02.483 spaced eight (8) inches apart parallel to each other to receive meters. Metal tags shall be securely fastened to valves and drain cocks, lettered “Apt. A,” etc., or some other lettering so the valves for each tenement may be easily found.
(1987 Code, sec. 5-247)
All plumbing fixtures shall be provided with a sufficient supply of water for flushing to keep them in a sanitary condition. Every water closet or urinal shall be flushed by means of an approved tank or flush valve of at least four (4) gallons flushing capacity for water closets, and at least one (1) gallon for urinals, and shall be adjusted to prevent the waste of water. The flush pipe for water closet flush tanks shall not be less than one and one-fourth (1-1/4) inches in diameter, and the water from flush tanks shall not be used for other purposes.
(1987 Code, sec. 5-248)
(a) 
To prevent the possibility of backsiphonage, every outlet, opening, orifice or termination of any hot or cold water piping, including every faucet, stopcock, ball cock, valve or similar appliance through which water is discharged, shall not be less than three-quarters of an inch above the level at which the fixture would overflow on the floor unless the supply pipe thereto is provided with an approved flush valve, together with an approved air inlet or vacuum breaker, or an approved check valve and vacuum breaker.
(b) 
Lawn sprinkler systems shall be equipped with an approved vacuum breaker on the discharge side of each of the last valves. The vacuum breaker shall be at least six (6) inches above the highest head and at no time less than six (6) inches above the surrounding ground.
(1987 Code, sec. 5-249)
No hot or cold water piping or portion thereof shall be directly connected to, nor any hose, tube or pipe connected to any hot or cold water piping shall be inserted in, placed in or connected to, any trap tailpiece, drain piping, waste piping, soil piping, house draining system or sewer, or any portion thereof.
(1987 Code, sec. 5-250)
A globe valve in a cold water [line] and lever handle gas stop shall be accessible at the water heater. An approved temperature and pressure relief valve in the hot water line shall be within six (6) inches of the heater with the outlet to be piped to the outside of the building and turned down within one (1) foot of the ground or to an open fixture. The water heater shall be vented with an approved double walled pipe and shall not be installed in a bedroom, bathroom or attic, or in closets opening into the same. If set in a closet it shall be vented at the bottom of the door or wall with either holes or a grille to give thirty (30) square inches of ventilation. A heater or furnace vent shall not enter a stove hood or connect to any other vent supplied by any other fuel.
(1987 Code, sec. 5-251)
In all cases and conditions not covered by this division, the plumbing inspector, together with the duly appointed representative of the city health department, shall determine whether a condition is insanitary, a source of contamination or a hazard to the public health and safety.
(1987 Code, sec. 5-252)