Grease Interceptor Sizing Tool

UNIFORM PLUMBING CODE -- GREASE INTERCEPTOR SIZING TOOL
BASED ON APPENDIX H
Meals/Peak Hours
× Waste Flow Rate
× Retention Time
× Storage Factor
= Liquid Capacity**
(gallons) (hours)
Calculate Meals/Peak Hours first, then enter remaining values selected from tables below.

SIZE:

**Liquid Capacity & Size Will Auto Calculate**

NUMBER OF MEALS / PEAK HOUR
Seating Capacity × Meal Factor = Meals/Peak Hours
(seats)
MEAL FACTOR
Establishment Type Meal Factor
Fast Food 1.33
Restaurant 1.00
Leisure Dining 0.67
Cafereria / Hostpital 0.50
User Defined 0.75
WASTE FLOW RATE
Condition Flow Rate
With A Dishwashing Machine 6 Gallon
Without Dishwashing Machine 5 Gallon
Single Service Kitchen 2 Gallon
Food Waste Disposer Only 1 Gallon
RETENTION TIME
Kitchen Type Time
Commercial Kitchen Waste w/Dishwasher 2.5 Hours
Single Service Kitchen w/Disposable Plates & Utensils 1.5 Hours
STORAGE FACTOR
Kitchen Type Storage Factor
Commercial Kitchen Waste w/4 Hours Operation 0.5
Commercial Kitchen Waste w/6 Hours Operation 1.0
Commercial Kitchen Waste w/12 Hours Operation 1.5
Commercial Kitchen Waste w/24 Hours Operation 3.0
Single Service Kitchen w/Disposable Plates & Utensils 1.5

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