2006-07-22 04:17:27 · 3 answers · asked by efwhite22 1 in Science & Mathematics ➔ Engineering
Those are big pipes. For a 1000 foot run of 8-inch diameter small wall pipe (PVC, ABS, HDPE, etc), you'd get 700 gpm.
For a 100 foot run of 8" diameter pipe, you'd get about 2300 gpm.
So it depends on the length of the run.
About 5 times as much in the 15 pipe as in the 8 inch pipe for the same conditions.
If you're trying to size pipe for pumped flow or with moderate gravity head (like 3 psi), you want a max velocity of 5 feet per second.
Multiple 5 fps by your cross sectional area to get cubic inches per second. Divide by 231 cubic inches in a gallon and multiple by 60 seconds/minute.
Most suppliers selling pipe that large could run the pressure drop versus flow rate calculations for you.
2006-07-22 06:39:58 · answer #1 · answered by David in Kenai 6 · 1⤊ 0⤋
depends on the length of the drain run and also if the drain has a slope that provides any significant extra head
a 14" diameter pipe, 1000 ft long, with 3 PSI delta pressure (meaning 3 psig head, and 0 psig at the outles , will carry about 2500 gallons per minute
2006-07-22 14:34:35 · answer #2 · answered by enginerd 6 · 0⤊ 0⤋
it smells like poo mister watson! taste it.
2006-07-22 11:21:45 · answer #3 · answered by Lord Rupert Everton 3 · 0⤊ 0⤋