Drainage, Waste & VentQuestion 126 of 360
What term describes a vent that connects to the drain of a single fixture and extends independently to the outside air or to another vent?
a.Wet vent
b.Individual (back) vent
c.Circuit vent
d.Relief vent
Explanation
An individual vent (sometimes called a back vent) serves the trap of one fixture and rises independently to open air or ties into another vent above the flood-level rim. It is the most basic vent type and directly protects a single trap seal from siphonage and back-pressure.
Law Reference: 2022 California Plumbing Code (CPC) §901.0Practice all 360 questions free — no signup required.
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