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Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance
Section 146
Disposition versions
146. The suspended matter reduction performance is established using equation 4-19 if water input to the grassed ditch is evenly distributed over the length of the ditch.
Equation 4-19
where:
| P | = | Suspended matter reduction performance (%); | |
| V | = | Average water flow speed (m/s); | |
| L | = | Length of the grassed ditch (m). |
Where the length of the ditch, L, is less than the product of the average water flow speed, V, multiplied by 600 seconds, V x 600, the suspended matter reduction performance, P, is 0%.
In force: 2020-12-31
146. The suspended matter reduction performance is established using equation 4-19 if water input to the grassed ditch is evenly distributed over the length of the ditch.
Equation 4-19
where:
| P | = | Suspended matter reduction performance (%); | |
| V | = | Average water flow speed (m/s); | |
| L | = | Length of the grassed ditch (m). |
Where the length of the ditch, L, is less than the product of the average water flow speed, V, multiplied by 600 seconds, V x 600, the suspended matter reduction performance, P, is 0%.
