For example the ontario building code o reg.
Blue roof drain.
Passive blue roof systems control the rate at which water drains from a rooftop through non mechanical means.
The suitability of a blue roof and potential design options for a given building are determined based on various factors including structural capacity roof type and slope local climate and local regulatory requirements.
A bauderblue roof is designed specifically for each individual project.
Blue roof sustainable drainage solution rooftop suds.
Unlike active systems which inhibit water flow through drainage pipes passive systems temporarily detain water on the surface of the roof by lengthening the path the water must take in order to reach outlet drains.
4 6 1 blue roof introduction.
Check dams installed to pond sheet flow to roof drains.
The patented blue roof system utilises the roof construction for the attenuation of stormwater releasing it at a controlled rate in the period following the storm.
Instead of forcing rainwater to flow directly into an underground drainage system surface water is collected and stored and if necessary cleaned before it is used or released back into.
Blue roof design is a sustainable urban drainage system suds that is ideally suited to buildings that take up the entire lot or a major percentage of it.
Blue roof systems are an effective practice for controlling runoff from buildings with flat or mildly sloped roof surfaces.