Drainage, Waste & VentQuestion 128 of 360
A horizontal wet-vent system under the CPC is limited to serving fixtures within…
a.any group of fixtures on one floor
b.a kitchen and laundry group
c.up to eight fixtures of any type
d.one or two bathroom groups on the same floor level
Explanation
Wet venting under the CPC is limited to the fixtures of one or two bathroom groups located on the same floor level. The drain of an upstream fixture serves as the vent for a downstream fixture, so the arrangement is restricted to controlled bathroom-group layouts. Kitchen and laundry fixtures are not part of a wet-vented bathroom group.
Law Reference: 2022 California Plumbing Code (CPC) §908.0Practice all 360 questions free — no signup required.
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