DRAINAGE FIXTURE UNIT VALUES (DFU)
|
Individual Fixtures
|
Min.
Trap & Trap Arm Size
|
Private
|
|
Individual Dwelling
|
3 or More Dwellings
|
|
Bathtub
or Combination Bath/Shower
|
1.5"
|
3
|
3
|
|
Bidet,
1-1/4" trap
|
1.25"
|
1
|
1
|
|
Clotheswasher,
domestic, 2" standpipe
|
2"
|
3
|
3
|
|
Drinking Fountain or Watercooler
|
1.25"
|
|
|
|
Dishwasher, domestic, with independent drain
|
1.5"
|
2
|
2
|
|
Kitchen
Sink, Domestic, with one 1-1/2" trap
|
1.5"
|
2
|
2
|
|
Laundry Sink
|
1.5"
|
2
|
2
|
|
Receptors (floor sinks)
|
1.5"
|
1
|
|
|
Showers (Single Stall)
|
2"
|
2
|
2
|
|
Sinks (Residential)
|
1.5"
|
2
|
|
|
Sinks (Service)
|
2"
|
3
|
|
|
Wash Basin (Lav.)
|
1.25"
|
1
|
1
|
|
Water closet,
1.6 GPF Gravity Tank
|
3"
|
3
|
3
|
|
Water closet, 1.6 GPF Flushometer Tank
|
3"
|
3.5
|
3.5
|
|
Whirlpool
Bath or Combination Bath/Shower
|
2"
|
3
|
3
|
|
Individual Fixture
|
Min.
Trap & Trap Arm Size
|
Individual Dwelling
|
3 or more Dwellings
|