Project and geothermal studies
Water network studies
Calculation method used to calculate the flow rate in an unpressurized pipe. The calculation formula used is Manning Strickler. The flow rate is determined from the diameter, the filling ratio, the slope and the Strickler coef. Maximum flow is obtained with a 94% fill rate. The Strickler coefficient depends on the material. It ranges from 62 to 77 for rough concrete, 71 to 90 for smooth concrete and 90 to 120 for polymer.
| DN (mm): | |
| SDR: | |
| CR/SN PE80 (kN/m2): | - |
| CR/SN PE100 (kN/m2): | - |
| Inside diameter (mm): | - |
| Fill rate (% - Max. flow for rate = 94%) | |
| Slope (mm/m) | |
| Strickler coefficient (40 to 120) |
|
| Flow (l/s) |
| Speed (m/s) |
