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.

Dear all, I would like to know if it is mandatory to comply with minimum exhaust rates indicated in TTABLE 6-4 Minimum Exhaust Rates from ASHRAE 60.1 -2010.

Hi everyone, I'm having trouble finding datasheets with the reflectance values for the project I'm working on.

Hello, I'm currently working on a project of a huge office building with a small area for retail and a restaurant.

Hello, I'm trying to answer the V4 BD+C (New Construction and Major Renovation) daylight credit through option 1 (SDA+ASE).

Hi! I'm currently working on a project regarding an office building.

Hi, I have several AHU's that serve a big office building.