Does anyone know of a manufacturer that makes a parking lot lighting fixture that casts light in only one direction, instead of 2 or 4 directions?

Does anyone have experience with a campus dorm application for Interior Building Lighting - Option 2?

Does anyone have an experience with Ecotect in exterior lighting calculations?

The site boundary of our building is lined with quite tall and dense trees. Should these be incorporated into the footcandle calculations?

Question on LEED NC 2009 SSc8 - For Option #1 on the interior lighting portion, is having an occupancy sensor alone installed on fixtures that have a direct line of sight sufficient to meet this re

Hi all, I am working on a residential multi-dwelling building. For a residential building it is impossible to control or decide the interior lighting for the apartments.

I have a dumb question - when they ask for Initial fixture lumens per lumenaire, do they want fixture output lumens or the lamp lumens? Big difference in the percentage calc.

Our project is in an urban site; the LEED boundary goes beyond the property line and sometimes the curbline.

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 have a 2 m. high brick wall running all around out site.