Hi,

Hello,

I’m working on a Project in Portugal, which consists in a 13.400m2 site, with 6000m2 rooftop (harvests rain), 2500m2 green roof, 2735m2 of gardens, 306 m2 of planters and 1840m2 of impermeable pave

Hello! I am constructing a building model which spaces are half offices, half laboratories. The HVAC system chosen is system 5 (packaged VAV with reheat) for all building, since it is considered a

LEED O&M 2009 reference guide stated (page xxii) that "certification applies only to whole buildings" and that "the project of a multitenant building must involve at least 90% of the total gros

Hi. In option 3 of this credit “Building and Material Reuse” we must reuse or salvage building materials from off site or on site as a percentage of the surface area.

According to ASHRAE 90.1 (2007) Table G3.1 - 10 c, "where no heating systems exist, HVAC system shall be assumed to be electric".

USGBC is translating the LEED v4 rating systems to Chinese, Portuguese, and Spanish, and they passed us an advance copy to get your feedback!

Hi, I have several compact rooftop units serving a big sales area. However, only 80% of them is actually new equipment that meet the credit's criteria.

The project seeking LEED certification includes air-to-water heat pumps (4-pipe), that are able to produce hot and chilled water (simultaneously or separetly).