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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

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

Stormwater rate and quantity calculation for case 1

Dear all, We have found a sample calculation to determine storm water rate and quantity for 1 yr-24 hr design storm and 2 yr-24 hr design storm from www.illinoisfloods.org/.../4D_Stormwater%20Volume%20and%20Treat.... We would like to know about the process followed in this website is correct for the solution or not?

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Profile picture for user Mike Dee
Michael DeVuono
Regional Stormwater Leader
Arcadis North America
LEEDuser Expert
144 thumbs up

Tue, 09/02/2014 - 15:13

The calculations required to determine the stormwater rate and runoff volume should be completed by a qualified professional experienced in this field, it is not a process you can learn on a website. TR-55 is one of the more commonly used guidance documents.

Wed, 09/03/2014 - 05:11

Thank you for your reply.

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