Hazen Williams Equations Calculator
Hydraulics and Fluid Mechanics Formulas
Problem:
Solve for friction coefficient
Note: Valid only for ambient temperatures and turbulent flow
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Solution:
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Tap or click to solve for a different unknown or equation
 | mean flow velocity |
 | friction coefficient |
 | hydraulic radius |
 | hydraulic grade line slope |
 | discharge or flow rate |
 | friction coefficient |
 | pipe diameter |
 | hydraulic grade line slope |
| 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:
P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.
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