Drainage, Waste & VentQuestion 85 of 360
A combination waste and vent system is typically used for:
a.Floor sinks and island sinks where a conventional vent is impractical
b.Water closets in a public restroom
c.Battery of urinals on a wall
d.Roof drains
Explanation
Combination waste and vent systems are designed for fixtures such as floor sinks, floor drains, and island sinks where structural conditions make a conventional vent impractical, relying on oversized horizontal piping for air movement. Water closets are excluded from combination waste and vent systems, and urinal batteries and roof drains use other methods.
Law Reference: 2022 California Plumbing Code (CPC) §910.0Practice all 360 questions free — no signup required.
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