Hello, When calculating the number of lumens emitted at or above 90 degrees from nadir, is it possible to disregard the lumens that are shielded by the building its self / are not emmited directly

The USGBC has published a draft for additional guidance for international projects. That includes alternative compliance paths and even additional LEED online forms for international projects.

Hi, My project will install an exterior viedo wall. May I know if this feature shall included in the calculation?

Can someone please explain where the 600W of Base Site Allowance in an LZ2 zone comes from? I know it comes from ASHRAE90.1-2007 Addenda i, but what does it mean?

If project uses boundary lights (even near to boundary also), it is very difficult to comply the credit requirements. Is there any solution to this issue?

We have received IES file for one of our lighting simulation project.

can a building still achieve this credit if they adhere to ASHRAE 90.1 for exterior lighting, none of the exterior lighting falls over the site boundary and there is no glazing in the building shel

Our project is a new building being built on an existing campus.

Hello All, I have a project that is required to meet its own jurisdictional dark sky ordinance.

Hi All, We are considering using some of up-lights to light some trees at night, I wonder if there is a way to calculate the lumens shielded by trees or by a canopy structure on top of it (very na