Is existing site lighting, scheduled to remain, required to be included in the Light Pollution Reduction Credit when using the calculation method or is it only for proposed light fixtures? 

We have a school in design achieving 40% to 45% reduction thus 4 to 5 points for Indoor Water Use Reduction per the LEED v4.1 guide.  If it achieves at least 40% (antiicpated) it would then ac

Are there guidelines on how to determine how many air samples need to be collected to comply with the IAQ Assessment requirement?

I realize this is most likely quite a basic question, but in V4.1 are allowable quality view areas only for those regularly occupied spaces within the 3x head height zone and all others do not coun

Hi, I would like to know if there is additional guidance on the requirement to provide pressurized entryway vestibules at high-volume building entrances.

In this credit under option 1 the standard formula includes a vegetated roof.

The project contractor intends to do a full flush-out prior to occupancy.  Most of the furniture will be installed prior to flush-out, but on particular oder has been delayed and may not arriv

Our premilimary review comments for V2009 noted that "Reduction in quantity (SSc6.1) will require stormwater to be infiltrates or re-used onsite.

Has anyone encountered a project where the client or other circumstances suggested we look into purple roof solution.  From the looks of it, it's a green roof solution with optimized stormwate

This is a complex, multi-part question. An airport project is being phased and has multiple contracts. The scope includes replacing the runways and concrete around the terminals.