We are modeling a classroom building. The building is 55% renovated, and 45% new construction. We are renovating the major HVAC systems, exterior envelope, and building interior.

In Table 5.3 point 5 of annex G of ASHRAE 90.1-2007 I find that for the baseline building performance “opaque assemblies used for new buildings (..) shall confirm with the following common lightwei

Dear all, Sorry in advance for this lengthy thread. In a current (European) project the certifying building will be supplied with district heat from a large city network.

Hello, I'm trying to work through how much more efficient my project will be over ASHRAE 90.1 2007, and I wondered if anyone had experience with how the standard compares to IEC 2006. The local b

Hello, I have the following doubt: Suppose that a building has an HVAC system designed for all office and working areas, but for the restrooms and locker rooms, which are occupied every shift (3 p

Has anybody used the ASHRAE 9.6.2 Additional Interior Lighting Power allowance for cove lighting.

A couple of quick reference questions: 1) I have some miscellaneous areas in my project (stairwells, electrical rooms, elevator equipment room) being served by split system AC units and 4-pipe fan

In our building, fossil fuel is 30 time less expensive than electricity.

I am working in a project that has no heating or cooling system, therefore I used the same HVAC system as in the proposed model (system #4: PSZ-HP).

Hi, We have a new 400m2 dining hall project in Climate zone 1, and would like to seek advice on the compliance for having to meet the maximum 40% for vertical fenestration area as well as not excee