Hi, It is told that Rw is very similar to STC, I would like to ask for Sound transmission, Does LEED recognize the use of Rw (Weighted Sound Reduction index) and ISO 140 (acoustic) standard instead

Our project is an office building undergoing major renovation. The building will remain operational while the renovation is ongoing.

ASHRAE 90.1 states:

G3.1.3.6 Piping Losses losses shall not be modeled in either the proposed or baseline
building designs for hot water, chilled water, or steam piping.

Hello everyone,

I am currently working on a TI project for two floors of a mid-rise building. The current building uses pneumatic controls for the entire building.

Dear All, for option 2 calculation, I have a question on it. My project is a CI retail project. They will use carpet which include recycled content.

I find the reference guide confusing on this credit. Am I reading it correctly that multi-occupant spaces do NOT need to be addressed for lighting controls within v4 Retail projects?

Hello!  I have a CI project where the tenant occupies multiple contiguous floors.

Can a project pursue the prescriptive compliance path if there is not a ASHRAE 50% Advanced Energy Design Guide that is specifically applicable to the base building (i.e.

With the Innovation in Design credit for LEED-CI v4, the reference guide indicates that you can achieve all 5 credits thru a combination of innovation and exemplary performance credits (option 3).&