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?

We are working on a rural site which will be classified as LZ1, so will not be allowed any light to be emitted above 90 degrees from nadir.

I plan to get the this credit through simulation. I heard that DIALUX seems can get it, but I am not so sure. Please help me and tell me if I plan to get this credit though simuation, Which softwar

If there is an existing lighting within the lighting boundary (in our case lighting of the parking lot), should this be included in the assessment, or not?

The requirements state that for all zones: "Illuminance generated from a single luminaire placed at the intersection of a private vehicular driveway and public roadway accessing the site is allowed