Hi, The service water system in this building is heated by solar thermal collectors only, with no secondary heating system.

Hi everyone, We are working on a major renovation project where the owner wants to install roof insulation above the suspended ceiling.

I am trying to Calculate the required Pressure Drop adjustment for a lab facility, using Addenda "p" from ASHREA 90.1-2007.

I may have helped you, now it's your turn to help us all. The USGBC is seeking input and information related to the modeling of naturally ventilated and naturally conditioned buildings.

My project consist of a mixed used tower (G+52 floors) and 2 detached building ( be fed from the same cooling and heating system ) but they are core and shell and I m persuing LEED NC 2009 honestly

Can the pressure drop adjustment (e.g. for fully ducted return or for particulate filtration MERV) be applied to System 1?

Hello, The new revised section 1.4 form asks the values in US units. Can we fill the form in SI units?

Does someone knows why the leed online v4 form( so called newest in the documentation toolkit) does not include the 3 options as it was in the v3 form.

I recently noticed LEED Reference Guide for EAc1 Example Option 1 (p278) says we need to redistribute the window to wall ratio uniformally on each orientation of the building.

We are working on a project in Sri Lanka where water cooled package units are to be used for air conditioning.