Hydraulic Calculations Hazen William Equation
Q=1002 x C x D2.65 x S0.54
Where:
Q flow rate M3/hr
C = 150 for HDPE
D is the internal Diameter of Pipe in Mtrs
S is friction loss in pipe line in mtrs/ mtr
Typical Hazen - Williams coefficients
| Material | C factor(low) | C factor(high) |
|---|---|---|
| Asbestos Cement | 135 | 140 |
| Cast iron | 100 | 140 |
| Mortar lined D1 | 135 | 140 |
| Concrete | 100 | 140 |
| Steel | 90 | 110 |
| Polythylene | 145 | 150 |
| PVC | 145 | 150 |
| GRP | 140 | 150 |