Is existing lighting required to be included in the BUG rating prescriptive method? We have a project where only some site lighting is being upgraded; the rest will remain.

I saw a similar question regarding uplight, but is it possible for a building-mounted light fixture to be excluded from the glare requirements if it is shielded from the lighting boundary by anothe

This has come up on a project and we lost on appeal so I'm sharing this information with everyone. Any area being claimed in the wattage baseline calculation must be illuminated to a minimum light

Hello all, In this project in Taiwan (I cannot find the country selection below), there are no available IES files nor BUG ratings for the exterior luminaires; therefore, I am pursuing the credit

The v4 light pollution requirement does not specifically mention that a project must "only light areas required for safety and comfort" as is stated in the v2009 credit language.

Has anyone had success trying this out yet? Not sure how complicated it will be.

Is there maximum allowable LPD for an electrical substation?

For interior lighting of CS 2009 SSc8, does it include covered carparking areas? If dimming of light would cause security problem, which option would be more applicable for achieving this credit?

We are trying to determine the exterior lighting power densities for a Core and Shell project and have a doubt regarding a surface type per ASHRAE 90.1.

On first submittal of this credit, we got the comment that our project was actually in an LZ-2 zone instead of an LZ-3 zone.