Per page 194 of the v4 BD+C Reference Guide, the Exemplary Performance section indicates "Manage 100% of rainwater that falls within the project boundary".  This is a fairly vague statement.  Is...

Is my understanding correct that the building roof must be green to satisfy this credit ? The project is an office building with most of the parking underground and a small surrounding paveway...

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I am working on certification for an office building located within a larger campus boundary. We are able to achieve the 98th percentile through option 2. However,the retention...

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I am currently working on the certification of 2 separated buildings with different usages (separated HVAC and plumbing systems), both are following the v4 BD+C NC. The issue is...

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I am working on an urban redevelopment project that was not designated as a zero lot line. We are proposing a...

Which would be better for this credit , a normal porous asphalt paving or a vegetated interlock ?

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Can there be absolutely no uncontrolled flow to achieve this credit? For example, if the required retention volume for the 95th percentile storm is 100 CF, can I oversize ...

Hi LEED experts, It is difficult to find rainfall data of 10 years in my country. I'm just lucky to find an international source for that long data. But they just recorded the average rainfall...

Hashir Usman LEEDuser Basic Member May 5, 2020- 8:18 am Hi Andrea, LEED Guide says ''All runoff from the chosen percentile of precipitation events must be managed such that there is no surface discharge from the site. Techniques include, but are not limited to, infiltration, storage and re-use, bioretention, open-grid pavement, and the reduction of impervious area.'' So, I guess it is to use all those techniques that best mimic the natural hydrological conditions before any development occurred. And I read it in this forum that only storing and reusing the runoff volume does not comply...

What is metric for rain water management