G3.1.2.8 states: "If return or relief fans are specified in the proposed design, the baseline building design shall be also be modeled with fans serving the same functions (...)".

Hi, i'm working in a project of a refrigerated warehouse where most of the surface is not a regularly occupied space.

Art classrooms are considered both in Tab. 6-1 and in Tab. 6-4. If we respect Tab. 6-4, could we avoid the verification of Tab. 6-1 (i.e. could we avoid the outdoor air supply)?

We have a project with a terrace that is about 50% of the building roof.

Hi all, I'm modeling an HVAC system in Design Builder + Energy Plus that consists in Air handling units and VRV system.

Dear all, I am performing the calculation for the Water Outdoor Prerequisite, with both excel for a Project located in Italy (Rome): 1. Water budget tool (downloaded from EPA) 2.

Hello, I'm currently working on a project of a huge supermarket. The building has warehouses and storage rooms.

In LEED Healthcare Reference Guide specifies lead-free roofing and flashing. Is applicable the lead-free for PVC waterproofing floor slabs? I understand that roofing is for roof solutions, no sl

I'm considering a "Multi-purpose indoor unit for use in 4-pipe systems for the simultaneous production of chilled and hot water by means of two independent water circuits".

Hello, We are pursuing LEED EBOM v2009 for an office complex. The project was built at the same time and has two twin buildings, with independent HVAC systems.