Part 18 (2/2)
2-1/2 inches 1 pound 6 ounces.
3 inches 2 pounds 0 ounce.
4 inches 3 pounds 8 ounces.
SEC. 20. BRa.s.s CLEAN-OUTS.--Bra.s.s screw caps for clean-outs must be extra heavy, not less than 1/8 inch thick. The screw cap must have a solid square or hexagonal nut not less than 1 inch high and a least diameter of 1-1/2 inches. The body of the clean-out ferrule must be at least equal in weight and thickness to the caulking ferrule for the same size pipe.
SEC. 21. LEAD WASTE PIPE.--All lead waste, soil vent and flush pipes must be of the best quality, known in commerce as ”_D_,”
and of not less than the following weights per linear foot:
Diameters Weights 1-1/4 inches 2-1/2 pounds.
1-1/2 inches 3 pounds.
2 inches 4 pounds.
3 inches 6 pounds.
4 inches 8 pounds.
All lead traps and bends must be of the same weight and thicknesses as their corresponding pipe branches.
SEC. 22. ROOF FLASHERS.--Sheet lead for roof flas.h.i.+ngs must be 6-pound lead and must extend not less than 6 inches from the pipe and the joint made water-tight.
SEC. 23. TRAPS FOR BATH TUBS, WATER CLOSETS, ETC.--Every sink, bath tub, basin, water closet, slop hopper, or fixtures having a waste pipe, must be furnished with a trap, which shall be placed as close as practicable to the fixture that it serves and in no case shall it be more than 1 foot. The waste pipe from the bath tub or other fixtures must not be connected with a water-closet trap.
SEC. 24. SIZE OF HORIZONTAL AND VERTICAL WASTE PIPES, TRAPS AND BRANCHES.--
Horizontal and vertical Number of small fixtures 1-1/4-inch 1 1-1/2-inch 2 2 -inch 3 to 8 2-1/2-inch 9 to 20 3 -inch 21 to 44
If building is ten (10) or more stories in height, the vertical waste pipe shall not be less than 3 inches in diameter. The use of wrought-iron pipe for waste pipe 2 inches or less in diameter is prohibited.
The size of traps and waste branches, for a given fixture, shall be as follows:
---------------------------------------------+------------------ | Size in inches Kind of fixtures +-------+---------- | Trap | Branch ---------------------------------------------+-------+---------- Water closet | 3 | 4 Slop sink with trap combined | 3 | 3 Slop sink ordinary | 2 | 2 Pedestal urinal | 3 | 3 Floor drain or wash | 4 | 4 Yard drain or catch basin | 4 | 4 Urinal trough | 2 | 2 Laundry trays, two or five | 2 | 2 Combination sink and tray (for each fixture) | 1-1/2 | 2 Kitchen sinks, small | 1-1/2 | 1-1/2 Kitchen sinks, large hotel, etc. | | Kitchen sinks, grease trap| | 2 Pantry sinks | 1-1/2 | 1-1/2 Wash basin, one only | 1-1/4 | 1-1/4 Bath tub | 2 | 2 Shower baths | 1-1/2 | 1-1/2 Shower baths, floor | 2 | 2 Sitz bath | 1-1/2 | 1-1/2 Drinking fountains | 1-1/4 | 1-1/4 ---------------------------------------------+-------+----------
SEC. 25. OVERFLOW PIPES.--Overflow pipes from fixtures must in all cases be connected on the inlet side of the traps.
SEC. 26. SETTING OF TRAPS WITHOUT RE-VENT.--All traps must be substantially supported and set true with respect to their water levels. No pot, bottle or ”D” trap will be permitted nor any form of trap that is not self-cleaning, nor that has interior chambers or mechanism nor any trap except earthenware ones that depend upon interior part.i.tions for a seal. In case there is an additional fixture required in building and it is impossible to re-vent pipe for the trap, the building department may designate the kind of trap to be used. This shall not be construed to allow traps without re-vents in new buildings.
SEC. 27. SAFE AND REFRIGERATOR PIPES.--Safe-waste pipes must not connect directly with any part of the plumbing system.
Safe-waste pipes must discharge over an open, water-supplied, publicly-placed, ordinary-used sink, placed not more than 3-1/2 feet above the cellar floor. The safe waste from a refrigerator must be trapped at the bottom of the line only and must not discharge upon the ground floor, but over an ordinary open pan, or some properly-trapped, water-supplied sink, as above. In no case shall the refrigerator waste pipe discharge into a sink located in a living room.
The branches on vertical lines must be made by means of ”Y”
fittings and be carried to the safe with as much pitch as possible. Where there is an offset on the refrigerator waste pipe in the cellar, there must be clean-outs placed. These clean-outs must be of bra.s.s.
In tenement and lodging houses the refrigerator waste pipe must extend above the roof, and not be larger than 1-1/2 inches and the branches not smaller than 1-1/4 inches.
Refrigerator waste pipes, except in tenement houses, and all safe-waste pipes, must have bra.s.s flap valve on the lower ends. Lead safes must be graded and neatly turned over beveled strips at their edges.
SEC. 28. VENT-PIPE MATERIAL.--Material for vent pipes shall be of lead, bra.s.s, enameled iron or galvanized iron.
SEC. 29. VENTILATION OF TRAPS AND SOIL LINES.--Traps shall be protected from siphonage or air pressure by special vent pipes of a size of not less than the following tables:
-----------------+----------------+----------------------------- | Maximum | Number of traps vented | length in feet | Size of pipe +----------------+------------+---------------- | Mains | Branch | Main vertical -----------------+----------------+------------+---------------- 1-1/4-inch vent | 20 feet | 1 | 1-1/2-inch vent | 40 feet | 2 or less | 2-inch vent | 65 feet | 10 or less | 20 or less 2-1/2-inch vent | 100 feet | 20 or less | 40 or less 3-inch vent | 10 or more | 60 or less | 100 or less | stories | | -----------------+----------------+------------+----------------
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