Hi, there has been some previous discussion in this topic, but no definite answer has been given. Example 2 in the ref. guide uses 1" storm, referring to it as 90% of the average rainfall event....

Michael DeVuono,
I've digged through both forum 6.1 and 6.2 but didn't found international data for Design Storm. I am doing a project in Russia. We have sites with existing imperviousness...

Hi

My project site is composed of sand,gravel.
How do I define the run off coefficient?
Where can I get it?
I'm not experienced enough to work LEED project.
Might...

Dear all,

Our project design stormwater combine 2 options:
1. For stormwater runoff at the ground surface, we can decrease 25% by installing pervious pavement (like hole brick...

Has anyone ever utilized a bio-retention basin with an underdrain that eventually slowly releases the filtered runoff and discharges to a stormdrain system instead of infiltrating naturally to...

In my region, the DP requires that the major storm system be designed to convey runoff from the 1:100yr event (and minor system to convey the 1:5yr event). Acknowledging that 1:100yr is a...

As part of NYC's blue roof requirement, roofs must provide 24 hour detention detention for the 2-yr design storm and an equivalent peak runoff rate equal to a curve # of approx 50 for projects...

I am trying to document a project under option 2 for this credit for a...

Why is equation 1 divided by 12" ?

Vr=(P.Rv.A)/12"

Dear community,

We certify a project that will have two extensions in the future. Because of this we cannot earn crédits SSc5.1 and SSc5.2 as per the MPR. But I was wondering if this is...