Hazen-Williams Hydraulic Radius Equation
This hydraulic radius formula is used in Hazen-Williams equations and the coefficient formula.
Hazen-Williams Hydraulic Radius Equation formula
\(\large{ r_h = \left( \frac {v}{ 1.318\;C\; m^{0.54} } \right)^{\frac {1}{0.63} } }\) |
Where:
Units | English | Metric |
\(\large{ r_h }\) = hydraulic radius | \(\large{in}\) | \(\large{mm}\) |
\(\large{ C }\) = Hazen-Williams coefficient | \(\large{dimensionless}\) | |
\(\large{ m }\) = hydraulic grade line slope | \(\large{ft}\) | \(\large{m}\) |
\(\large{ v }\) = mean flow velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |
Solve For:
\(\large{ C = \frac{ v }{ 1.318 \; C \; r_h^{0.63} \; m^{0.54} } }\) | |
\(\large{ m = \left( \frac{ v }{ 1.318 \; C \; r_h^{0.63} } \right)^{ \frac{1}{0.54} } }\) | |
\(\large{ v = 1.318 \; C \; r_h^{0.63} \; m^ {0.54} }\) |
Tags: Equations for Hydraulic Equations for Open Channel Equations for Hazen-Williams