It would require trapping the first 1.2" of rainwater. For an 800sqft roof, that's almost 600 gallons of water. Much, much larger than the rain barrels that are getting installed.
From the permit, retention of the first 1.2 inches of stormwater would be required for all new development and redevelopment greater than 5,000 square feet in the District. I'm not sure if this applies to the lot or the building, but this would exempt most rowhouse-type dwellings on Capitol Hill.
But 1.2 inches does add up to a surprising volume of water, even on small roofs. The big rain barrels that DDOE installs hold 132 gal.
Guys, please be polite. Remember that these people are your neighbors. I ask also that anonymous users leave some kind of tag [e.g. big green cat] for the sake of being able to follow a thread. Be respectful and have fun.
This will never pass without DDOE approval.
ReplyDeleteIt would require trapping the first 1.2" of rainwater. For an 800sqft roof, that's almost 600 gallons of water. Much, much larger than the rain barrels that are getting installed.
ReplyDeleteFrom the permit, retention of the first 1.2 inches of stormwater would be required for all new development and redevelopment greater than 5,000 square feet in the District. I'm not sure if this applies to the lot or the building, but this would exempt most rowhouse-type dwellings on Capitol Hill.
ReplyDeleteBut 1.2 inches does add up to a surprising volume of water, even on small roofs. The big rain barrels that DDOE installs hold 132 gal.