🚰 ASME A112.14.3 / PDI G101 (Hydromechanical GPM & Gravity Interceptor 25% Rule)

Restaurant Grease Interceptor Calculator

Size indoor hydromechanical (Schier / Trapzilla) and outdoor underground gravity grease interceptors under ASME A112.14.3 & PDI G101: calculate peak drainage fixture unit flow (GPM), determine total grease retention capacity (Lbs of FOG before reaching the 25% pump-out threshold), and commercial plumbing contracting margins.

1. Project & Operating Inputs

Total Kitchen Drainage Fixtures (Fixture GPM e.g. 75 GPM 3-Bay Sinks)

Grease Retention Capacity (Pounds FOG e.g. 500 Lb Certified Capacity)

Customer Bid Price for Supplied & Plumbed Interceptor Skid ($)

Schier Polyethylene Interceptor, Flow Control Tee, Master Plumber ($)

2. Financial Breakdown & Yield

PDI G101 GREASE INTERCEPTORS

Turnkey Grease Interceptor Profit

Commercial Plumbing Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost