Manning equation online calculation
Calculation of the roughness coefficient, flow rate, hydraulic radius, and slope of the line
Select the appropriate unit and enter a value and click on "Calculate". The result will be displayed.
Calculate Hydraulic Radius
R = Hydraulic Radius
V = Flow Velocity
n = Manning s Roughness Coefficient
S = Line Slope
\(R=(\frac {V×n}{1.49×S^{0.5}})^\frac{1}{0.66}\)
Known data: flow velocity; manning roughness coefficient; line slope; what is the hydraulic radius?
Input data: flow velocity: 2 ft / sec; manning roughness coefficient: 1; line slope: 3;
Output:hydraulic radius: 0.679590 ft;
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