Fixture
|
Fixture Unit Value
|
---|---|
Lavatory with 1-1/4" trap
|
2
|
Bathtub with 1-1/2" waste
|
3
|
Bathtub with 2" waste
|
4
|
Shower stall with 2" waste
|
3
|
Shower stall with 3" waste
|
4
|
Water closet with 4" waste
|
6
|
Dental unit or cuspidor with 1-1/4" waste
|
1
|
Sink (glass or silver) with 1-1/2" waste
|
3
|
Sink (surgeon’s) with 1-1/2" waste
|
3
|
Kitchen sink (residence) with 1-1/2" waste
|
3
|
Sinks (3 compartments), cafe or eating establishment with 2"
waste
|
4
|
Laundry tubs with 2" waste
|
4
|
Garbage disposal with 1-1/2" waste
|
3
|
Garbage grinder (salvagers) with 2" waste
|
4
|
Restaurant sink (single) 1-1/2" waste
|
2
|
Double scullery sink compartment 1-1/2" waste
|
4
|
Restaurant dishwashers up to 30 gal. water capacity 2" waste
|
2
|
Combination laundry tub and sink with 2" waste
|
4
|
Combination laundry tub-and-sink with 1-1/2" waste
|
3
|
Service sink (slop sink)
|
4
|
Service sink with flush valve
|
6
|
Drinking fountain
|
1/2
|
Urinal–stall and washout
|
5
|
Urinal–pedestal siphon jet and blowout
|
4
|
Floor drain with 4" outlet
|
6
|
Laundry tubs with 1-1/2" waste
|
3
|
Sterilizer (instrument) with 1-1/4" waste
|
1
|
Dish washing machine with 2" waste
|
4
|
Floor drain with 3" outlet
|
4
|
Floor drain with 2" outlet
|
3
|
Washing machines (domestic)
|
2
|
Dish washing machines (domestic)
|
3
|
Sink (bar or fountain) with 2" waste
|
3
|
Sink (factory wash-up) with 2" waste
|
4
|
Baptistery with 2" waste
|
4
|
Air conditioning unit with 2" waste
|
4
|
Acid sinks (laboratory) with 1-1/2" waste
|
4
|
Potato peeler with 2" waste
|
4
|
Single compartment scullery sink with 1-1/2" waste
|
3
|
1 double compartment sink
|
4
|
2 double compartment sinks with 2" waste
|
5
|
Restaurant dishwashers up to 100 gal. water capacity with 3"
waste
|
6
|
TABLE A. DRAINAGE LINE SIZES
| ||||||||
---|---|---|---|---|---|---|---|---|
Maximum Number of Fixture Units Which May Be Connected to
| ||||||||
Pipe size
(in)
|
Vertical soil and waste stack. Main stack to extend full size
through roof.
|
Horizontal branch drains receiving discharge from one “branch
interval”
|
House drains receiving discharge from more than one “branch
interval”
| |||||
|
Total
|
1/8" fall
|
1/4" fall
|
1/2" fall
|
1/8" fall
|
*1/4" fall
|
1/2" fall
|
1/16" fall
|
1-1/2
|
8
|
|
3
|
3
|
|
|
|
|
2
|
24
|
|
8
|
12
|
|
21
|
26
|
|
2-1/2
|
35
|
|
13
|
18
|
|
24
|
31
|
|
3
|
75
|
|
32
|
45
|
|
27
|
36
|
|
4
|
400
|
110
|
150
|
225
|
150
|
200
|
300
|
|
5
|
1000
|
250
|
350
|
490
|
360
|
500
|
700
|
250
|
6
|
2200
|
460
|
700
|
950
|
625
|
950
|
1300
|
500
|
8
|
6000
|
1400
|
2000
|
2800
|
1950
|
2800
|
3900
|
1200
|
10
|
12000
|
3600
|
5000
|
6500
|
5000
|
7000
|
9000
|
2400
|
12
|
18000
|
6300
|
8400
|
10500
|
9000
|
12000
|
15000
|
3600
|
15
|
|
|
|
|
14000
|
20000
|
28000
|
4800
|
*Building (house) sewer laterals and mains only.
|
Note: Water closets shall not be connected to pipes of less
than 4" diameter. No soil or waste stack shall be smaller than the
largest horizontal branch connected thereto.
|