(A) Placement. All pipes and fixtures shall be arranged so as to permit any examination and repairing. They shall be amply protected from injury, and no pipe shall be placed on the outside of any building except by permission of the City Engineer.
(B) Change in direction. All changes in direction of soil or waste pipes shall be made with not sharper than one-eighth bends and Y-branches of 45 degrees or less; no sanitary Ts shall be used, except on written permission of the City Engineer.
(C) Depth of underground pipes. All underground pipes on the outside of buildings shall be laid not less than 18 inches below the surface of the adopted grade.
(D) Double hubs. No double hubs shall be used in soil or waste pipes.
(E) Soil and vent pipes. All soil and vent pipes of any building shall terminate at least two feet above the roof, five feet above the highest shutters, windows, or other openings, five feet from any flue, and ten feet from any window or opening of any other building.
(F) Flashing. All soil and vent pipes terminating at the roof are to be flashed with sheet lead, not less than four pounds per square foot.
(G) Size of soil pipe. No soil pipe shall be less than four inches interior diameter and shall extend, with undiminished size, from the cesspool or drain to a proper point above the building to be drained.
(H) Waste pipes.
(1) Placement. Waste pipes from all fixtures shall run as direct as practicable to the soil pipes, and pipes may be branched together before entering the soil pipe by making proper enlargement below the junction, equal to the combined area of the pipes united; provided, the enlargement shall not be greater than the area of the soil pipes.
(2) Interior diameter. Waste pipes shall be of the following interior diameter for each of the following fixtures:
Fixture Type | Waste Pipe Diameter |
Fixture Type | Waste Pipe Diameter |
Bathtub | 1.5 inches |
Catch basin | 4 inches |
Closet | 4 inches |
Shower bath | 2 inches |
Sink | 1.5 inches |
Slop hopper | 4 inches |
Urinal | 1.5 inches |
Wash bowl | 1.25 inches |
Wash tray | 1.25 inches |
(I) Vent pipes.
(1) Branching.
(a) Vent pipes may be branched together by making a proper enlargement above the junction equal to the combined area of the united pipes, but no vent shall branch into the soil pipes unless by special permission of the City Engineer.
(b) Vents shall not be connected or united lower than one foot above the top of the highest fixtures so united.
(2) Prohibited use. No earthenware, sheet metal, or chimney flue shall be used as a vent pipe.
(3) Diameter. The vent pipe from the trap of each fixture shall be of the same size as the waste pipe, except the closet slop hopper and catch basin vents, which shall not be less than two inches in diameter.
(4) Length. All vent pipes 30 feet in length shall be increased one-half inch in diameter for each additional length not exceeding 30 feet.
(J) Grade; stop and waste cocks. All pipes serving water to any plumbing fixture shall be laid on sufficient grade, and with necessary stop and waste cocks, to drain dry when the water is shut off.
(K) Cast iron pipes and fittings.
(1) Extra heavy grade.
(a) All cast iron pipes and fittings used below the two top floors of buildings more than two stories high shall be of the grade known to commerce as “extra heavy,” and the pipe shall be of the following weight per linear foot:
Pipe Type | Weight per Linear Foot |
2-inch pipe | 5.5 pounds per linear foot |
3-inch pipe | 9.5 pounds per linear foot |
4-inch pipe | 13 pounds per linear foot |
5-inch pipe | 17 pounds per linear foot |
6-inch pipe | 20 pounds per linear foot |
(b) In buildings of two stories or less, the standard grade may be used.
(2) Standard grade.
(a) Standard grade of lead pipe shall be the Lead Industries Association’s standards, which are as follows:
Pipe Size | Weight per Foot | |
- | Pounds | Ounces |
Pipe Size | Weight per Foot | |
- | Pounds | Ounces |
1 inch | 2 | 0 |
1.25 inches | 2 | 8 |
1.5 inches | 3 | 8 |
2 inches | 4 | 0 |
3 inches | 4 | 12 |
4 inches | 8 | 10 |
(b) Sheet lead shall weigh not less than four pounds per square foot.
(L) Fastened to joists or walls. All pipes not resting on a solid bed of earth shall be securely fastened to joists or walls with iron straps or hangers.
(M) Strainers. All waste pipes, except those of water closets, shall be provided with strong metallic strainers securely fastened in place.
(Prior Code, § 10-3-12) Penalty, see § 153.999