Drainage, Waste & VentQuestion 70 of 360
What is the maximum DFU load on a 2 inch horizontal fixture branch?
a.3 DFU
b.6 DFU
c.12 DFU
d.20 DFU
Explanation
Table 703.1 limits a 2 inch horizontal fixture branch to a maximum of 6 DFU. A 1-1/2 inch branch carries 3 DFU, a 2-1/2 inch branch carries 12 DFU, and a 3 inch branch carries 20 DFU. Loading a 2 inch branch beyond 6 DFU requires upsizing the pipe.
Law Reference: 2022 California Plumbing Code (CPC) §703.0 (Table 703.1)Practice all 360 questions free — no signup required.
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