Drainage, Waste & VentQuestion 130 of 360
A circuit vent serving a battery of floor-mounted fixtures on a horizontal branch may serve a maximum of how many fixtures?
a.6
b.8
c.10
d.12
Explanation
A circuit vent may serve a battery of up to 8 fixtures connected to a horizontal branch drain. A single vent rises between the last two fixtures to serve the whole battery, and a relief vent may be required where fixtures discharge above. This method suits banks of floor-mounted water closets or urinals.
Law Reference: 2022 California Plumbing Code (CPC) §911.0Practice all 360 questions free — no signup required.
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