# Air Pipe Sizing

## Air Pipe Sizing formula

\(\large{ d = 12 \; \sqrt { \frac { 4 } { \pi } \; \frac { Q_a } {60 \; v_a} } }\) |

### Where:

\(\large{ d }\) = pipe inside diameter

\(\large{ Q_a }\) = air flow rate

\(\large{ v_a }\) = air velocity

\(\large{ \pi }\) = Pi