convert container size to gallons

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convert container size to gallons

Postby Sue » Sat Aug 29, 2009 11:14 pm

I have a grease pit and I want to know how many gallons it holds. What is the formula in basic terms please :)
thank you
Sue
Sue
 
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Re: convert container size to gallons

Postby Dirtman » Fri Sep 04, 2009 4:37 am

Sue wrote:I have a grease pit and I want to know how many gallons it holds. What is the formula in basic terms please :)
thank you
Sue


Cubic inches / 231 = gallons (US)
Cubic feet * (1728 / 231) = gallons (US)

As most grease interceptors are rectangular prisms:
If measuring in inches: length x width x depth (to water surface or bottom of outlet) / 231 = gallons (US)
If measuring in feet: length x width x depth (to water surface or bottom of outlet) x (1728/231) = gallons (US)

I’m assuming you have a grease interceptor, also called a grease trap, instead of a grease pit. A grease interceptor has an inlet for FOG/water effluent (FOG is an acronym for fats, oils and grease), a series of baffles to separate the FOG from the water, and an outlet into the sewer system for water discharge only. Only the FOG is pumped out occasionally.

A grease pit is simply a box with an inlet (no outlet), that holds both the FOG and water, and needs to be emptied frequently. Most all municipal and county codes do not allow for grease pits on new construction. If you DO have a grease pit, measure the depth to the botton of the cover.
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