Find the volume and fill time of a length of pipe.
A pipe's water volume is its cylindrical interior. Multiplying cubic feet by the gallons per cubic foot gives the capacity, and dividing by the fill rate gives the time. Knowing the fill volume matters for purging, testing and sizing water in long pipe runs.
Pipe Fill Volume
Gallons = pi x radius^2 x length x 7.48; time = gallons / rate
Gallons = pi x radius^2 x length x 7.48; time = gallons / rate A pipe's water volume is its cylindrical interior. Multiplying cubic feet by the gallons per cubic foot gives the capacity, and dividing by the fill rate gives the time.
Knowing the fill volume matters for purging, testing and sizing water in long pipe runs.
This calculator takes 4 inputs: Pipe length, Inside diameter, Number of runs, Fill rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.