Onsite Arithmetic: Pump Math Part 2

Test your septic math skills — or practice for your next certification exam.
Onsite Arithmetic: Pump Math Part 2

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1. Using the same rectangular (4 feet by 7 feet) and circular (5-foot diameter) pump tanks from last month, determine if the alarm float has a minimum 5-inch swing to set off the alarm. How many gallons will accumulate before the alarm is tripped?

2. If the average daily flow is estimated at 450 gpd for a three bedroom house and the local regulations require the tank to hold one day's flow above the alarm float to give the homeowner the opportunity to get the pump fixed, how large a tank is needed to provide the required volume? How deep in inches does the tank need to be to provide the required volume?

 

Answers are posted here. 

Here’s a review of Simple Septic Math and our Pointers for Onsite Arithmetic.



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