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FAQs about SSc6.1 :

What performance threshold do I need to achieve for an Exemplary Performance point?

The calculations for this credit are always a headache! While our projects are usually awarded the credit, the equations in the LEED Reference Guide are helpful mostly for sizing a reservoir or cistern, but don't help you get to the final results. Does US

Why do the requirements focus on 1-year and 2-year, 24-hour storms?

Why include the 1-year storm in the credit requirements? Won't management practices for the 2-year storm be effective?

How can green roofs count as a stormwater control measure?

How can I achieve compliance if my project's stormwater control measures are outside the LEED project boundary?

I have 100-year data—how do I convert to 2-year?

Is it an acceptable strategy to capture the rainwater into tanks and discharge it into the public sewers after the rainstorm reducing the peak discharge?

Are there special considerations for international projects?

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NC-2009 SSc6.1:Stormwater Design—Quantity Control

The data I have to work with

The data I have to work with for filling this credit out are pre- and post-development calculations for a 100 year storm with a duration of 1 hour. How does this relate/convert to 1-yr, 24 hr and 2-yr, 24 hour design storms? Thank you!

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Profile picture for user sgeithner
Susann Geithner
Principal
Emerald Built Environments
LEEDuser Basic Member
900 thumbs up

Thu, 08/11/2011 - 17:20

It doesn't. You will have to obtain the 1yr, 24hr and 2 yr 24 hour storm data form your local weather service. It's a totally different value. In general if the systems were designed to handle the 100 year storm than they are very much capable to handle the others. I did a project in German with the exact same question.

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