Consolidated Statutes and Regulations
Consolidated Statutes
Consolidated Regulations
Annual Statutes and Regulations
Annual Statutes
Annual Regulations
Additional information
Québec Official Publisher
What’s new?
Information note
Policy of the Minister of Justice
Laws: Amendments
Laws: Provisions not in force
Laws: Provisions brought into force
Annual Statutes: PDF versions since 1996
Regulations: Amendments
Annual Regulations: PDF versions since 1996
Court Decisions
Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance
Section 133
Disposition versions
133. The sizing of the flow control device for reducing suspended matters, in the case of an orifice or orifice plate type, is established using equation 4-12:
Equation 4-12
where:
| A | = | Flow section of the orifice (m2); | |
| Q̅mes | = | Average flow leaving the permanent volume retention system to discharge the runoff volume to be treated (m3/s); | |
| C | = | Discharge coefficient of the orifice: minimum value: 0.60; | |
| 9.81 | = | Gravitational acceleration (m/s2); | |
| H1 | = | Vertical distance between the centre of the orifice and the average water level reached upstream of the orifice; the average level corresponds to the average between the maximum level and the level of the centre of the orifice; | |
| H2 | = | Vertical distance between the centre of the orifice and the water level downstream of the orifice (m); if the downstream side of the orifice is not submerged and is free-flowing, then H2=0. |
In force: 2020-12-31
133. The sizing of the flow control device for reducing suspended matters, in the case of an orifice or orifice plate type, is established using equation 4-12:
Equation 4-12
where:
| A | = | Flow section of the orifice (m2); | |
| Q̅mes | = | Average flow leaving the permanent volume retention system to discharge the runoff volume to be treated (m3/s); | |
| C | = | Discharge coefficient of the orifice: minimum value: 0.60; | |
| 9.81 | = | Gravitational acceleration (m/s2); | |
| H1 | = | Vertical distance between the centre of the orifice and the average water level reached upstream of the orifice; the average level corresponds to the average between the maximum level and the level of the centre of the orifice; | |
| H2 | = | Vertical distance between the centre of the orifice and the water level downstream of the orifice (m); if the downstream side of the orifice is not submerged and is free-flowing, then H2=0. |
