Would appreciate very much if anyone can clarify that the maximum allowed percentage of total lumens emitted above horizontal (by lighting zone) is applied to each luminaire or the sum of all...

Is there a definition of nightime hours for internally illuminated signage? I would assume midnight to 6 AM as in the excemption for facades but I can't find any statement.

Hi all,

Is "Specialized transportation signal, directional & marker lighting" subject to the interior lit exterior sign...

This may be an academic question but I am unsure on the wording. The modification of the lighting boundary depends on adjacency to a walkway or a public street. What if there is a walkway in...

If I understand the LEED requirements for exterior lighting, we will be following the BUG guidelines for all lighting that will remain on from sunset to sunrise. For the building and landscape...

Am I missing something or does v4 no longer have any requirement on interior lighting that has a significant uplighting component?

We have an interior atrium that will have this issue -...

I just had this come up on a project. The reviewer will only allow me to count hardscape area for the...

Does anyone have experience on whether a scoreboard for a sports stadium would fall into "internally illuminated exterior signage"? I am assuming no, because the scoreboard is within the stadium...

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...

Has anyone had success trying this out yet? Not sure how complicated it will be. Just found out that the project I'm documenting had anticipated but probably not designed for the v2009 credit for...