Dear All, I am modeling an existing building with a Water-cooled VRF HVAC system.

I have a heating-only warehouse (with small conditioned office) I'm modeling for C&S 2009.

How do I calculate the U-factor for the construction assembly (e.g walls) according to ASHRAE 90.1-2007 Appendix A if one or some of the construction layers properties are not specified in the ment

The project consists of non residential building of 6 stories.

Hi, Currently I'am working on a LEED Core & Shell mixed development project, and I have an issue on develop model regarding HVAC design.

Hello all, I'm participating in a project of a building of 20 floors of offices, of which the first corresponds to shops and entrance hall.

As it relates to occupancy sensors being installed in all 'back of house' spaces for this credit, what encompasses back of house spaces? Is there a comprehensive list? i.e.

Hi, I am developing a simulation (EAP2/LEED CS) for an existing building located in Rio de Janeiro.

Does anyone know whether LED monitors for advertisement are considered as exterior lighting? Does it need to comply with the 2.2W/m2 Exterior LPD requirement as stipulated in ASHRAE 90.1?

Hi we are doing the eap2 modelling for a 18 floor office building. the floors are all the same. we need to submit the modelling results for precertification.