Can I use the ASHRAE table and methodology of demonstrating LPD compliance?

Hello all, Regarding light leaking from a high bay warehouse with clerestory windows above the dock doors.

We are working on a government facility which will potentially have Statues and/ or large War Relics displayed on-site.

I have been working on a 1000-person lodge which is shooting for LEED Silver.

The FAQs describes that the vertical footcandles needs to be measured at ground level. In my opinion, it is not true. Reference guide NC v3 describes that "Calculate the vertical light levels alon

If you're having trouble knowing exactly how much uplight the light fixtures on your site are emitting there is a simple free tool for converting an IES file into an output that will display upligh

This note is for CALGreen but thought I'd share anyway. The Light Pollution credit under CALGreen is now considered voluntary until July 1st.

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?

Has anybody been successful in meeting the exterior lighting requirements by using an automatic shutoff control, at say 10PM? I assume this alone is not acceptable.

We have a site with 3 product buildings and a small separate canteen building .