Diameter -- Select Standard Diameter -- 25 mm (0.025 m) 32 mm (0.032 m) 40 mm (0.040 m) 50 mm (0.050 m) 63 mm (0.063 m) 75 mm (0.075 m) 90 mm (0.090 m) 110 mm (0.110 m) 125 mm (0.125 m) 140 mm (0.140 m) 160 mm (0.160 m) 180 mm (0.180 m) 200 mm (0.200 m) 225 mm (0.225 m) 250 mm (0.250 m) 280 mm (0.280 m) 315 mm (0.315 m) 355 mm (0.355 m) Internal diameter of the pipe (m)

Head Difference (m) Head Difference (m)

Length (m) Length of the pipe (m)

Roughness (mm) -- Select Roughness -- HDPE Pipe (0.1mm) GI Pipe (1mm) Pipe roughness height (m)

Design Discharge (m3/s) Design Discharge (m³/s)