Q:

How do you calculate water flow for a given pipe size?

A:

Quick Answer

To calculate the water flow rate through a given pipe size, multiply the area of the inner cross-section of the pipe by the velocity of the water. The velocity of the water is required for this calculation.

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Full Answer

Pipe sizes are usually given in diameters, as most of the pipes in use are round. To determine the area of the inner cross-section of the pipe, first divide the diameter by two in order to find the radius. The area of a circle is equal to pi x radius x radius. Multiplying the area by the velocity of the water yields the volume of water flow per unit of time.

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