Drainage, Waste & VentQuestion 72 of 360
A vent terminating through a roof must extend above the roof surface at least:
a.3 inches
b.12 inches
c.4 inches
d.6 inches
Explanation
Each vent pipe passing through a roof must extend at least 6 inches above the roof surface. A shorter extension can be blocked by debris or ponding water. Where the roof is used for purposes other than weather protection, the vent must extend at least 7 feet above the roof.
Law Reference: 2022 California Plumbing Code (CPC) §906.1Practice all 360 questions free — no signup required.
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