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CWRE Pipe Capacity Calculator (Gravity-Fed Pipes, Hazen-Williams Formula) - Borst Engineering & Construction LLC
Interior Diameter (Inches)
Length (Feet)
Hazen-Williams Friction Coefficient (Steel Pipe is 130)
Fall (Feet)
Gradient (%)
Area of Cross-Section (SF)
Wetted Perimeter (Feet)
Hydraulic Radius (Feet)
Maximum Velocity (FPS)
Pipe Capacity (CFS, GPM=448.8 x CFS)
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