Drainage, Waste & VentQuestion 144 of 360
A gravity grease interceptor (the large in-ground type) commonly has a minimum liquid capacity of…
a.50 gallons
b.100 gallons
c.500 gallons
d.750 gallons (2839 L)
Explanation
Gravity grease interceptors are large in-ground tanks with a typical minimum liquid capacity of 750 gallons, sized upward based on the drainage load (DFU or seating). Their large volume and long retention time let grease float and settle before the effluent leaves. Small hydromechanical units serve lower-flow applications instead.
Law Reference: 2022 California Plumbing Code (CPC) §1014.0Practice all 360 questions free — no signup required.
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