Drainage, Waste & VentQuestion 135 of 360
A sewage ejector receiving the discharge of a water closet must have a discharge pipe of not less than what diameter and be able to pass a 2-inch solid?
a.1-1/4 inches
b.1-1/2 inches
c.2 inches (51 mm)
d.4 inches
Explanation
A pump or ejector handling water-closet discharge must have a discharge pipe of at least 2 inches and be capable of passing a 2-inch spherical solid. This prevents clogging by the solids typical of sanitary sewage. Smaller effluent-only pumps are permitted only where they handle liquid waste without solids.
Law Reference: 2022 California Plumbing Code (CPC) §710.0Practice all 360 questions free — no signup required.
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