For Option 2, a document, such as manufacture product sheets needs to be provided to confirm the resultant transmittance of shading device is less than 10%. What is resultant transmittance? Is...

Would clerestory windows be required to have automatic shades if the project uses down lights located below the windows? Technically, these lights would not be in direct line-of-sight of the...

It seems like most bollard lights emit light straight out to the sides at 180 or 360 deg spreads. Therefore allowing a lot of light to be emitted above 90 deg from nadir. Does anybody have...

We conducted a photometric analysis for a new building and complied with...

The property line for a LEED NC Retail project I am working on extends to the center of the abutting roadway. If we use this as our LEED project boundary and therefore the lighting boundary for...

Our project does not have any lighting on a non-tradeable surface and as a result, we cannot achieve credit compliance. How do I handle the input block for non-tradeable surfaces? Thanks!

I'm note sure to understand the fourth demand of this credit. For zone LZ3 for example, we need to justify a maximum initial...

I have a project building pursuing certification that is located on a campus. There is a...

Is there a flag exemption for government builds, as far as it pertains to...

Can someone please explain where the 600W of Base Site Allowance in an LZ2 zone comes from?
I know it comes from ASHRAE90.1-2007 Addenda i, but what does it mean? It means that the sum of...