Is there any mandatory filter efficiency requirement (MERV) for projects located in areas with a very high PM2.5 levels? Is it mandatory for ASHRAE 62.1-2010 requirements?

Hello everyone. May I ask 2 questions on option 1 in EQ credit-Daylight? A) Assuming a project go for option 1 in EQ credit Daylight.

Hello, Our project building include mostly museum/galleries and lobbies. The project building is very close the sea and has amazing landscape.

Hello everyone, I am currently filling in the documents for this particular credit and I get a negative value for LWR.

Hello all, We have a C&S office project where the owner prepares technical infrastructure for VRF heating cooling system in tenant area.

Our project is using a translucent film on several demountable glass office partitions to provide screening and privacy.

The project will apply for certification under LEED v2009 NC. The Proposed design is a 50,000 sf three story building (two above ground plus a full basement) with a central atrium.

Hi all, We are working on a residential building. The quantity of resident should use the architect's calculation which based on OBC or put the number which based on the LEED reference guide?

I am trying to clarify if 100% wool design felt would classify as a bio-based material for option 2. The portion on skin is where the question arises. Thank you.

Hello. If my project will have no water use for permanent irrigation sys after 2 yrs threshold and it has used of native plants, I wd instantly qualified for 2p, given this is a Rqmt and ALSO a cre