Changes

The key mechanisms for the SBR’s ability to hold water are the modulating control valves installed on the third floor. Whereas typical flat roof buildings allow rainwater to passively drain from their roofs without rainwater retention, the SBR roof drains are configured with valves that stop drainage from occurring. These valves allow water to pond on the roof up to a safe maximum depth, determined by the height of the overflow pipes, which is an average of 130 mm in the case of the SBR. Water that is held back by these valves is passed through the SBR’s first CSA-compliant treatment system via a suction line that is installed immediately upstream of the east modulating control valve.

The key mechanisms for the SBR’s ability to hold water are the modulating control valves installed on the third floor. Whereas typical flat roof buildings allow rainwater to passively drain from their roofs without rainwater retention, the SBR roof drains are configured with valves that stop drainage from occurring. These valves allow water to pond on the roof up to a safe maximum depth, determined by the height of the overflow pipes, which is an average of 130 mm in the case of the SBR. Water that is held back by these valves is passed through the SBR’s first CSA-compliant treatment system via a suction line that is installed immediately upstream of the east modulating control valve.

==Station 3 – Third-Floor Treatment System==

=='''Station 3 – Third-Floor Treatment System'''==

The OBC requires that flat roofs do not allow rainwater to pond beyond a maximum depth 150 mm. Furthermore, the OBC demands that rainwater is drained within 24 hours. In order to maximize the benefits of rainwater capture, CVC sought exemptions from these restrictive clauses of the OBC. The City of Mississauga granted both of these exemptions, under a set of conditions.  

The OBC requires that flat roofs do not allow rainwater to pond beyond a maximum depth 150 mm. Furthermore, the OBC demands that rainwater is drained within 24 hours. In order to maximize the benefits of rainwater capture, CVC sought exemptions from these restrictive clauses of the OBC. The City of Mississauga granted both of these exemptions, under a set of conditions.