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Hazen Williams Equations Formulas Calculator

Hydraulics and Fluid Mechanics


Solving for hydraulic grade line slope

hydraulic grade line slope

Note: Valid only for ambient temperatures and turbulent flow


Inputs:

mean flow velocity (v) 
friction coefficient (C) 
hydraulic radius (r) 


Conversions:

v = 0    = 0  foot/second
C = 0    = 0  
r = 0    = 0  foot


Solution:

hydraulic grade line slope (s)  =  HAS NOT BEEN CALCULATED 


Other Units:



Change Equation
Select an equation to solve for a different unknown

Mean Fluid Velocity
mean flow velocity mean flow velocity
friction coefficient friction coefficient
hydraulic radius hydraulic radius
hydraulic grade line slope hydraulic grade line slope

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