The 2 year, 24-hour design storm precipitation data is unavailable for the country. However, Historic rainfall data exists.
Using that data, we will calculate the maximum runoff rate and...

Hi --can a swimming pool be considered a retention pond? And are swimming pools considered to be 100% pervious? Or is it a matter of whether the water is treated before re-use or release? Thanks...

Good morning,
We are working in a Project in Asunción, Paraguay. In the form of the credit, you have two tables, i have three questions:
1- The value of rate (cm) in the table is the...

I'm working in a project where rainwater is collected and stored in storage cisterns. These cisterns fed the irrigation system, flush discharges and enclosed car park cleaning.

Has anyone...

Hi,

I have noticed this question 2 times in the comments, but, I don't see an answer. On page 97 LEED 2009 guide they use 3 days or 72 hours as the design storm interval (between...

Hello,

In our project outside the US and in the rainy tropics our site pre-development is >50% impervious (only 10% site is natural green) therefore we need to go for 25% reduction in...

Hi All.

This is just a suggestion.

To achieving this credit the pre-development condition is no more the "existing site" we were talking about in v2009, but is now(LEED v4) the "...

Hello,
Our project is based on the case 2. Existing Site With imperviousness is greater than 50%.

We implemented several strategies for improvement:
a) Reduced runoff place...

We are having a hard time determining how to calculate the flow quantities for our site when it has been designed so all of the run off is captured and conveyed to on-site retention ponds. Is...

To reduce runoff peak and quantity our project team used an embedded underground chambers system. In this practice, the only chambers waterflow outlet is water exfiltration on surrounding soil....