# Hazen Williams Equations Formulas Calculator

## Hydraulics and Fluid Mechanics

Note: Valid only for ambient temperatures and turbulent flow

#### Inputs:

 mean flow velocity (v) meter/second centimeter/hour centimeter/second foot/day foot/second inch/hour inch/second kilometer/hour kilometer/second knot mach sea level 15 C meter/day mile/hour mile/second millimeter/second speed of light in vacuum yard/second friction coefficient (C) hydraulic grade line slope (s)

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#### Conversions:

 v = 0 = 0 foot/second C = 0 = 0 s = 0 = 0

#### Solution:

 hydraulic radius (r) = HAS NOT BEEN CALCULATED

#### Other Units:

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Mean Fluid Velocity

Fluid Flow Rate
 discharge or flow rate friction coefficient pipe diameter hydraulic grade line slope

Where
 v = mean flow velocity C = Hazen Williams friction coefficient r = hydraulic radius s = hydraulic grade line slope Q = flow rate or discharge D = pipe diameter

Reference - Books:

1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.

by Jimmy Raymond