My project is a Data Center located within a very urbanized area and surrounded by other buildings (located very close) thus any kind of lighting is not needed.

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?

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.