Hello, I'm modelling a low-rise data center. According to Appendix G, I should use system 4 (rooftop package heat pump) for reference model.

The building contains 2 below ground basements and 3 office floors above ground, should we add the basement floor area in the total area of the building for the building density calculation??

Greetings, In the project we are modeling, the Proposed design has applied a chiller’s condenser heat recovery without this to be required by the prescriptive requirement (6.5.6.2).

Hi, I have a question concerning the the function of a elevator lobby as a vestibule. Regarding to Standard 90.1, every building entrance that separate cond.

We are pursuing LEED certification for small project in which some offices are converted to open offices, break room and reception area in an existing building.

In calculating compliant roof area to total roof area, is the SF associated with parapets considered roof area?

Dear all, we are working on a project which be supplied from a DES with CHP. The source of CHP is not renewable energy but natural gas.

Where can I get a sample Thermal Environment Survey Form to upload to satisfy the LEED Reviewer?

I am working on a office building that has installed airflow measuring devices on the central Makeup Air Unit which serve fresh air to a compartment unit on each of the buildings floors via a fresh

Does anybody have experience using an alternate compliance path for a project in a cold climate?