Drainage, Waste & VentQuestion 97 of 360
A cleanout (often a two-way cleanout) is required at:
a.The junction of the building drain and the building sewer
b.Each individual fixture trap
c.The midpoint of the roof vent
d.No exterior location
Explanation
A cleanout is required at or near the junction of the building drain and the building sewer, commonly installed as an accessible two-way cleanout, to allow rodding in both directions. Individual fixture traps and roof vents are not the required junction cleanout location, and an exterior cleanout is exactly what this rule provides.
Law Reference: 2022 California Plumbing Code (CPC) §707.4Practice all 360 questions free — no signup required.
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