SummaryWeight in Water Supply Fixture Units (WSFU)Minimum
Connections (diameter)Trap & Trap arm SizeDrainage Fixture
Unit#Fixture TypePrivatePublicCold WaterHot
Water#Fixturemm(DFU)1Bathtub2413131Bathtub3822Bedspan
washer10252Bidet3823Bidet2413133Clotheswashers5124Combination sink
and tray313134Dental unit3215Dental Unit1105Drinking
Fountain3116Dental Lavatory1213136Floor drain5127Drinking
Fountain12107Interceptor for grease5138Kitchen
sink2413138Interceptor for sand7669Lavatory1210109Laundry
tubs38210Laundry tray24131310Mobile home park
traps76611Shower24131311Receptors, water
station38112Sink24131312Receptors, dishwashers51313Urinal,
pedestal102513Shower, single stall51214Urinal, (wall
lip)51314Shower, gang51-15Urinal, stall51915Sinks,
residential38216Urinal with flush tank316Sinks, bar,
commercial38217Wash sink,circular or multiple2131317Sinks, bar,
private38118Water Closet:18Sinks,
industrial38319Flushometer-tank351019Sinks,
clinic76620Flushometer-valve6102520Sink, service51321Flush
tank351021Urinal, pedestal76622Urinal, stall51223Urinal, wall
mounted51324Urinal,wall mounted, blowout76625Urinal, wall mounted,
siphon jet51226Urinal, wall mounted, washout38227Wash basins, in
sets38228Wash basins (lavatory) single32129Water Closet, private
installation76430Water Closet, public installation766
Test 1PRIVATEPUBLICDiameterTrap & Trap arm SizeDrainage
Fixture UnitFixture TypeWSFUWSFUCold
Water#FixturemmCheckANSWER(DFU)Check2ANSWER2x=1XXXX1BathtubX38X2x=1XXXX2BidetX38X2x=1XXXX3ClotheswashersX51X24Dental
unitX32X15Drinking FountainX31X1Fixture TypeWSFU6Floor
drainX51X2x=2XXXX7Interceptor for greaseX51X3x=2XXXX8Interceptor
for sandX76X6x=2XXXX9Laundry tubsX38X2x=2XXXX10Mobile home park
trapsX76X6x=2XXXX12Receptors, dishwashersX51X3x=2XXXX11Receptors,
water stationX38X114Shower, gangX51X-Fixture TypeWSFU13Shower,
single stallX51X2x=3XXXX20Sink, serviceX51X3x=3XXXX16Sinks, bar,
commercialX38X2x=3XXXX17Sinks, bar, privateX38X119Sinks,
clinicX76X618Sinks, industrialX38X315Sinks,
residentialX38X221Urinal, pedestalX76X622Urinal,
stallX51X223Urinal, wall mountedX51X325Urinal, wall mounted, siphon
jetX51X226Urinal, wall mounted, washoutX38X224Urinal,wall mounted,
blowoutX76X628Wash basins (lavatory) singleX32X127Wash basins, in
setsX38X229Water Closet, private installationX76X430Water Closet,
public installationX76X6
