Hazen-Williams Flow Rate Equation

This flow rate formula is used in Hazen-Williams equations and the coefficient formula.  This formula only works for ambient temperatute and turbulent flow.

 

Hazen-Williams flow Rate Equation formula
\(\large{ Q =  0.285 \; C\; d^{2.63} \;  m^{0.54}  }\)
Symbol	English	Metric
\(\large{ Q }\) = 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	\(\large{ ft }\)	\(\large{ m }\)
\(\large{ d }\) = inside diameter of pipe	\(\large{ in }\)	\(\large{ mm }\)