Q-2, r. 9.01 - Design code of a storm water management system eligible for a declaration of compliance

Section 31 Disposition versions

2020-12-31

31. The simulation model of a storm water management system must be a double drain construction.

A simulation model is a double drain construction where the minor and major drainage systems of the storm water management system are modellized and the surcharges of the minor drainage system and the interaction between the major and minor drainage systems are taken into consideration.

A minor drainage system intercepts, carries and discharges storm water from events having a return period equal to or less than 25 years and, where applicable, treats, holds and controls storm water flow: it comprises storm water management works, ditches, pipes, sumps and manholes.

A major drainage system allows the flow of surface storm water where the capacity of the minor drainage system is exceeded.

O.C. 871-2020, s. 31.

Not in force

In force: 2020-12-31

31. The simulation model of a storm water management system must be a double drain construction.

A simulation model is a double drain construction where the minor and major drainage systems of the storm water management system are modellized and the surcharges of the minor drainage system and the interaction between the major and minor drainage systems are taken into consideration.

A minor drainage system intercepts, carries and discharges storm water from events having a return period equal to or less than 25 years and, where applicable, treats, holds and controls storm water flow: it comprises storm water management works, ditches, pipes, sumps and manholes.

A major drainage system allows the flow of surface storm water where the capacity of the minor drainage system is exceeded.

O.C. 871-2020, s. 31.