Section 29.
Number of Traps Permitted on Various Size Waste Pipes.
1-1-1/4
Trap
permitted on 1-1/4
Waste Pipe.
2-1-1/2
", or equivalent,
permitted on 1-1/2
Waste Pipe.
3 to 8-1-1/2
", or equivalent,
permitted on 2
Waste Pipe.
9 " 20-1-1/2
", or equivalent,
permitted on 2-1/2
Waste Pipe.
21 " 44-1-1/2
", or equivalent,
permitted on 3
Waste Pipe.
If building is ten (10) or more stories in height, the vertical waste-pipe shall not be less than three (3) inches in diameter. The use of short pattern recessed drainage fittings or wrought-iron, steel or copperized pipe for waste-pipe two inches or less in diameter is prohibited.
The size of traps and waste branches, for a given fixture, shall be as follows:--
Kind of Fixtures.
Size in inches.
Trap.
Branch.
3
4 3
3
3
2
2
3
3
2-4
2-4
1-1/2.2.3
2.3
3.4
3.4
4
4
1-1/2.2
2
Combination sink and tray (for each
1-1/2
2
1-1/2
1-1/2
Kitchen sinks (large), hotels, restaurants,
2
2
1-1/2
1-1/2
1-1/4
1-1/4
1-1/2
1-1/2
1-1/2
1-1/2
1-1/2
2
2
1-1/2
1-1/2
1-1/4
1-1/4
Dental Cuspidor 4x8, Drum, P or Running
1-1/2
1-1/2
2
2
(29 amended Mar. 31, 1937, P.L.168, No.44)