Hazen-Williams Pipe Inside Diameter Equation

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

This inside pipe diameter formula is used in Hazen-Williams equations and the coefficient formula.

 

Hazen-Williams Pipe Inside Diameter Equation formula

\(\large{ d = \left(   \frac {Q}{ 0.285 \; C \; m^{0.54} } \right)   ^{\frac {1}{2.63} }   }\)   

Where:

 Units English Metric
\(\large{ d }\) = inside diameter of pipe \(\large{in}\) \(\large{mm}\)
\(\large{ Q }\) = flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\)
\(\large{ C }\) = Hazen-Williams coefficient \(\large{dimensionless}\)
\(\large{ m }\) = hydraulic grade line slope \(\large{ft}\) \(\large{m}\)

 

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Tags: Pipe Sizing Equations Pipe Equations Hazen-Williams Equations