# Hazen Williams Equations Calculator

## Hydraulics and Fluid Mechanics Formulas

Solving for friction coefficient Note: Valid only for ambient temperatures and turbulent flow

#### Inputs:

 mean flow velocity (v) meter/secondcentimeter/hourcentimeter/secondfoot/dayfoot/hourfoot/minutefoot/secondinch/dayinch/hourinch/minuteinch/secondkilometer/daykilometer/hourkilometer/minutekilometer/secondknotmach sea level 15 Cmeter/daymeter/hourmeter/minutemile/daymile/hourmile/minutemile/secondmillimeter/secondspeed of light in vacuumyard/second
 hydraulic grade line slope (s)

#### Conversions:

 mean flow velocity (v)= 0 = 0foot/second
 hydraulic radius (r)= 0 = 0foot
 hydraulic grade line slope (s)= 0 = 0

#### Solution:

 friction coefficient (C)= NOT CALCULATED

#### Other Units:

Change Equation
Select to solve for a different unknown
Mean Fluid Velocity
Fluid Flow Rate
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.

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