How many gallons per foot in a 3 inch pipe?

Answer 1

A U.S. liquid gallon is legally defined as 231 cubic inches. A pipe of 3 in diameter has 1.5 x 1.5 x pi x 12 cu ins per foot = 1.5 x 1.5 x 3.14159 x 12 = 84.82 cu ins per foot No of gallons per foot = 84.82/231 = 0.367 galls/ft