The LEED v4 acoustics credit addresses sound isolation purely through composite STC ratings. In my research, I have struggled to find STC ratings for ceiling products.

Hi Markus, Thanks for your reply. I've been trying to undestand the explanation of 90.1-2013 User's Manual, page G-35.

Hi All, I am trying to establish if a project can take benefit in the energy model for an improved air infiltration rate for the building envelope over the baseline model.

Can fertilizers contain a small percentage of Ammoniacal Nitrogen and still be considered non-ammonia based?

Currently we have no smoking signs on the residence hall's main entrances, the ones used by residents to get in and out of the building.

We understand that buildings roofs with PV should be excluded from the roof calculations. Does that also mean that PV canopies over on-grade parking should be excluded?

I'm working to certify a school in LEED EB:OM v4.

Hello, What if a project has small retail stores on the bottom floor, less than 3m long, and the ground outside doesn't belong to the property owner but the municipality (and therefor not possible

The new bundling of low emitting categories into one credit is resulting in disincentivizing our v4 projects from pursuing low emitting credits they always used to before.

Hello, I am currently working on a project and we are targeting LEED ND. As part of LEED ND, one of the buildings will be LEED NC certified.