The equation for a cylinder is pi*r2*h. pi=3.141593, r=2.5in/2=1.25in, h=12in.
This results in a volume of 565.486678in3.
To convert to gallons divide by 231(in3/US gallon).
565.486678in3/231= 2.447994 US gallons per foot.
This equation assumes that the inner diameter of the pipe is 2.5 inches.
2.61153 gallons.
One foot of 3 inch pipe will hold approximately 0.625 gallons of water.
0.3672 gallon per foot of pipe.
A 12 inch diameter round pipe will hold 4.89 UK gallons or 5.88 US gallons per foot.
36.7 US gallons.
36.7 US gallons.
0.6528 gallon per foot (rounded)
36.83 u.s. gallons of water in 1 ft. of 30" pipe
0.255 gallons per foot of pipe. A 10 ft long pipe that size holds 2.55 gallons.
0.212 331 gallons per foot.
231 cubic inches. So 0.832674 Gallons.
To calculate the gallons per foot in a 36-inch pipe, first determine the volume of a 1-foot length of the pipe. The formula for the volume of a cylinder is ( V = \pi r^2 h ). With a radius of 18 inches (1.5 feet) and height of 1 foot, the volume is approximately 84.78 cubic feet. Since there are about 7.48 gallons in a cubic foot, this results in approximately 634.3 gallons per foot in a 36-inch pipe.