Grease Trap Sizing Calculations

See 1994 Uniform Plumbing code (UPC) Section 1011 and Table 10-2.

The total storage capacity in gallons of the fixtures discharging into the grease trap shall not exceed 2.5 times the certified GPM flow rate of the grease trap. This limitation is in addition to the restrictions found in Table 10-2 below.

Total Number of Capacity Fixtures Connected Required Rate of Flow Gallons Per Minute (GPM) Grease Pounds (LB)
1 20 40
2 25 50
3 35 70
4 50 100

Last Modified on January 8, 2009 01/08/2009 08:44:12