How do you get water volume in pipe lines?

You need to know two important dimensions of the pipe: the length and the inside radius (1/2 the inside diameter).

From there, you plug the dimensions in to this formula: radius2 x Pi (3.1416) x length. It is easiest if you ensure the dimensions are in the same format, such as feet or inches. Here is a sample:

The volume of a 50-foot long pipe with an inside diameter of three feet (1.5' foot radius) would be calculated as such:

• 32 x 3.1416 x 50 = about 1,413.72 cubic feet of volume

Now there is the important final step of converting cubic feet to gallons of liquid. There are about 7.48 gallons in one cubic foot.

Since we know there are 1,413.72 cubic feet in the sample pipe above, we simply multiply 1,413.72 x 7.48 resulting in a maximum fluid volume of about 10,574.6256 gallons of water.