Calculateur d'Unités de Raccordement Gratuit
Calculez les unités de raccordement de plomberie pour dimensionner vos canalisations d'alimentation et d'évacuation.
Total Fixture Units
15.5 WSFU
Total Fixture Units vs Toilets (Flush Valve)
Formule
## Fixture Unit Method Each plumbing fixture is assigned a unit value based on its flow demand. The total WSFU determines minimum pipe size per code tables. A quick estimate for peak demand in GPM uses the Hunter curve approximation: **GPM = 5 x sqrt(WSFU)**.
Exemple Résolu
2 toilets, 3 sinks, 2 showers, 1 dishwasher, 1 washer.
- 01Toilets: 2 x 2.5 = 5
- 02Sinks: 3 x 1 = 3
- 03Showers: 2 x 2 = 4
- 04Dishwasher: 1 x 1.5 = 1.5
- 05Washer: 1 x 2 = 2
- 06Total = 15.5 WSFU
- 07Peak GPM = 5 x sqrt(15.5) = 19.7 GPM
Questions Fréquentes
What is a fixture unit?
A fixture unit (FU) is a relative measure of the probable hydraulic demand of a plumbing fixture. One fixture unit originally equaled about 7.5 GPM, but modern codes use tables rather than a direct conversion.
Are these values code-compliant?
This calculator uses typical residential WSFU values. Always verify against your local plumbing code (IPC, UPC, or local amendments) for the final design.
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