It seems like most bollard lights emit light straight out to the sides at 180 or 360 deg spreads. Therefore allowing a lot of light to be emitted above 90 deg from nadir.

We conducted a photometric analysis for a new building and complied with light trespass on all sides of the building except the south side, where the new building will abut an existing building wit

The property line for a LEED NC Retail project I am working on extends to the center of the abutting roadway.

Our project does not have any lighting on a non-tradeable surface and as a result, we cannot achieve credit compliance. How do I handle the input block for non-tradeable surfaces? Thanks!

I'm note sure to understand the fourth demand of this credit.

I have a project building pursuing certification that is located on a campus.

Is there a flag exemption for government builds, as far as it pertains to light pollution? I havent been able to find a definitive answer.

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?

We are contemplating seeking this credit for a multiple building project. There are 4 buildings, they all belong to the same owner.

Hi, we´re working on an commercial project. In a production hall of 270,000 ft. floor space and 39 ft.