Sizing Tools
MANNING EQUATION -- PIPE FLOW CALCULATOR | ||||||||
---|---|---|---|---|---|---|---|---|
Roughness Coefficient | × | Hydraulic Radius | × | Pipe Slope | = | Velocity (ft/s) | or | Volumetric Flow (cfs) |
(Ft) | (Ft/Ft) |
Hydraulic Radius
R = (Ft)
H = (Ft)
Θ = (Degrees)
Pipe Slope
X = (Ft)
Y = (Ft)
ROUGHNESS COEFFICIENT | |
---|---|
Material | Coefficient |
PVC | 0.010 |
Steel | 0.012 |
Concrete | 0.011 |
Cast Iron | 0.012 |
PolyEthylene | 0.012 |
V = (kn / n) × R2/3 × S1/2
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