Tristan asked me to review the November 2011 addenda for this Credit.

Can compliance with the following requirement also be documented by proving (through interior lighting contour drawings) that less than 10% or the initial fixture lumens will be transmitted through

We are building a hotel with LEED NC v2009.

I have a couple projects where the property line falls a few feet from reaching the bordering roadway. In these cases, can the lighting boundary extend to the center of the road?

These questions are in regard to exterior lighting power calculation. I am fine with the general approach and calculation.

Our project is an historic building in the flatiron district in NYC.

Does anyone know if the Exterior Lighting Option 3 under the EBOM Rating System (nighttime illumination measurements) can be used as an alternative compliance path for the exterior portion of the N

Hi all, can you please tell me which is the best suitable software to demonstrate the compliance for horizontal and vertical footcandles requirements to USGBC for Light Pollution Reduction credit.

hi everyone, I cant seem to find any information about the lighting on driveways. The only reference to roads I can find is under “uncovered parking areas, parking lots and "drives” which is 1.6 W

We have to document that, for LZ2, max. 2% of initial fixture lumens are emitted at an angle of 90 degrees of more from nadir. In your experience how would you achieve this?