Hazen Williams Equations Formulas Calculator

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Solving for friction coefficient

Note: Valid only for ambient temperatures and turbulent flow

Inputs:

Conversions:

Q	=	=	gallon/minute
D	=	=	inch
s	=	=

Solution:

Hazen William friction coefficient (C)

HAS NOT BEEN CALCULATED

Other Units:

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Mean Fluid Velocity

	mean flow velocity
	friction coefficient
	hydraulic radius
	hydraulic grade line slope

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.

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