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Trap Arm Size DFU Individual Fixture Wsfu

This document provides tables listing various water supply fixture units and drainage fixture units for different types of plumbing fixtures. The water supply fixture unit table lists fixtures and their associated water supply fixture units for private and public installations. The drainage fixture unit table lists fixtures and their associated trap arm sizes and drainage fixture units. Fixtures include bathtubs, showers, sinks, toilets, urinals, and other plumbing fixtures. The document also provides conversion factors between fixture units, liters per minute, cubic feet per minute, and gallons per minute.

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Jancelle Lee
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323 views1 page

Trap Arm Size DFU Individual Fixture Wsfu

This document provides tables listing various water supply fixture units and drainage fixture units for different types of plumbing fixtures. The water supply fixture unit table lists fixtures and their associated water supply fixture units for private and public installations. The drainage fixture unit table lists fixtures and their associated trap arm sizes and drainage fixture units. Fixtures include bathtubs, showers, sinks, toilets, urinals, and other plumbing fixtures. The document also provides conversion factors between fixture units, liters per minute, cubic feet per minute, and gallons per minute.

Uploaded by

Jancelle Lee
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Water Supply Fixture Units Drainage Fixtue Unit

INDIVIDUAL FIXTURE WSFU FIXTURE Trap Arm Size DFU


Private Public (mm)

Bathtub 2 4 Bathtub 38 2
Bedpan washer 10 Bedpan washer

Bidet 2 4 Bidet 38 2
Dishwasher, domestic 1.5 1.5 Dishwasher, domestic 2
Drinking Fountain 1 2 Drinking Fountain 31 1
Lavatory 1 2 Lavatory 32 1
Dental unit or cuspidor 1
Dental units or cuspidor 32 1
Dental lavatory 1 2
Sinks, commercial or industrial, schools, etc., 
Combination sink and tray 3 including dishwashers, wash up sinks, and wash  38 3
fountains 50.8 mm waste
Sinks bar, 
commercial 51 mm min. waste
38 2
Bar sink 1 2
Sink, flushing rim, clinic 76 6
Sinks, and/or dishwashers (residential) 51 mm min. 
Kitchen sink, domestic 2 4 waste
38 2
Laundry tray 
( 1 or 2 compartments)
2 4 Laundry tub 38 2
Clothes washer s Clothes washer 51 2
Service sink 2 4 Sink, service 51 3
Wash up Basin 2 Wash basins, in sets 38 2
Wash sink, circular or multiple
(each set of faucets)
2 Wash basin (lavatory) single 32 1
Shower stall 51 2
Shower head 2 4 Shower, gang 
(1 unit per head)
51 1
Urinal pedestal 10 Urinal, pedestal, trap arm only 76 6
Urinal (wall lip) 5 Urinal, stall, separate trap 51 2
Urinal, wall‐mounted, 
Urinal stall 5 integral trap, trap arm only
51 3
Urinal, wall‐mounted, 
Urinal with flus tank 3 blowout, integral trap, trap arm only
76 6
Urinal, wall‐mounted, 
washdown or siphon jet, integral 51 2
trap, trap arm only
Urinal, wall‐mounted, 
washout, separate trap 50.8 mm 38 2
min. waste
Water Closet 
Flushometer‐tank
3 5
Water closet 
Water closet,* private installation 76 4
Flush tank
3 5
Water closet 
Flushometer valve
6 10 Water closet, public installation 76 6
Interceptors 
for grease, oil, etc.
51 3
Interceptors 
for sand, auto wash, etc.
76 6
Floor drains 51 2
Mobile home park traps
(1 for each trailer)
76 6
Receptors* (floor sinks),
 indirect waste receptors for refrigerators, coffee  38 1
urns, water station, etc.
Receptors* , indirect waste 
receptors for commercial sinks, 51 3
dishwashers, air washers, etc.

Fixture unit 28.3 L/ min.
1 cu. ft / min
7.48 gals / min

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