Drain Flow Rate Calculator
Pipe Diameter InchesMillimetersCentimetersFeet Pipe Slope Percent (%)Ratio (ft/ft)Degrees Manning’s Roughness Coefficient CustomPVC (0.013)Concrete (0.015)Cast Iron (0.014)Steel (0.012)Clay (0.014)Corrugated Metal (0.024) Flow Depth (for partially filled pipes) inches Inlet Coefficient C Drainage Area (for design flow) AcresSquare FeetHectaresSquare Meters Rainfall Intensity inches/hour Runoff Coefficient C Calculate Reset Drain Flow Analysis Maximum Flow Rate (Full Pipe) cubic…
