Hi there, For interior lighting, the guide reference indicates that the direct beam illumination intersects solid or opaque surfaces and does not spill to the outside.

ASHRAE/IESNA Standard 90.1-2007 does not specify on LPD Table for Building Exteriors the Flag Pole application.

From much of the threads in this topic, it appears that the requirement to meet option 2 of this credit is that you "Partially or fully shield all exterior fixtrues 50 watts and over so that they d

Has anyone documented Rule 3: Angle Exemption? I'm confused by the diagram in the reference guide. It is a plan view, correct?

The only exterior lights on the building we are working on are historic light fixtures at the entrances to the garage.

For our project we did a night illumination plan but off-site lights (public street lights) were causing our measurements to be over 20%. any idea how we can reconcile this difference?

Hi I dont understand how to document a compliance with the interior lights. I can take photos?

The Reference Guide is rather vague on how a manual override should be returned to normal saying just “Manual override capability may be provided for occasional after-hours use.

Hi, our site have an area which lighting system is operating 24/7 in order to support the factory which also operates 24/7. So, can us not add this specific area into the table SSc-8

All exterior lighting was retrofitted to CFL's a few years ago and is below 50W. Do we still need to perform Option 3 and take measurements?