Grease Trap Sizing

Volume from peak flow, retention, and loading factor; PDI G101 cited.

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Formula and source

Volume = peak GPM × retention time × loading factor. Recommended nominal sizes follow PDI G101 step ladder. IPC 2021 Section 1003 governs interceptor selection.

PDI G101 by name; IPC 2021 (International Plumbing Code). Section 1003.

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