SOLUTION: A lift station wet well is 12'6" in diameter. The influent valve is shut for 5 minutes and the wet well level drops 18 inches.... What is the pumping rate in gpm?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: A lift station wet well is 12'6" in diameter. The influent valve is shut for 5 minutes and the wet well level drops 18 inches.... What is the pumping rate in gpm?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


   



Question 584218: A lift station wet well is 12'6" in diameter. The influent valve is shut for 5 minutes and the wet well level drops 18 inches.... What is the pumping rate in gpm?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A lift station wet well is 12'6" in diameter.
The influent valve is shut for 5 minutes and the wet well level drops 18 inches....
What is the pumping rate in gpm?
:
Radius of the well: 12.5/2 = 6.25 ft
:
Find the volume of water in the 18 inch drop. (V+=+pi%2Ar%5E2%2Ah
:
Change 18 inches to 1.5 ft
:
V = pi%2A6.25%5E2%2A1.5
V = 184.0777 cu/ft
Change to gallons
7.481 * 184.777 = 1377.1 gallons
Find gal/min
1377.1%2F5} = 275.4 gal/min