I have a LEED project where they plan a storm water tank that will be a shared one with two other buildings next to the LEED project building.

Hi! I'm having some difficulties with the calculations, specially with the meaning of each variable in each equation. In equation 1, the 'P' (average rainfall event), should we consider the year

Our project is located in a city with a very low annual rainfall average (8.3mm that is about 0.327 inches per year). The project will have a green roof in about 60% of the roof area.

SS C6.1 has two cases: Case 1: Sites with existing imperviousness 50% or less: Requires proposed runoff not exceeding the existing runoff. Case 2: Sites with existing imperviousness greater than 50

Does discharging the collected rainwater to municipality facilities will help with achieving the requirements for credit 6.1 & 6.2? we are following Case1 - path 1, we will reclaim the rainwat

Michael, Our local regulations usually require rainwater collection facilities that only shift the total runoff between storms instead of infiltrating or reusing the rainwater. Is there a common

Good Morning, I’m starting with calculations in SS credit 6.1. But I have a question: Can I use the runoff data of the watershed where is located the project?

Hi all, We are working on a project in Prague with imperviousness >50% (Case 2).

How is design storm interval determined? I looked into the LEED BD+C Reference Guide on page 97 in the example (last calculation) at the top of the page.

Will capturing all rainwater and keep it in a tank for future uses such as cooling towers and irrigation? Our project will not infiltrate it but reuse it instead.