IF I have a lighting fixture with direct light, however, the fixture's glass is translucent / white glass. i.e. I can't see the light source through it but can only see a white lit surface, ...

The cutsheet of our concrete sealer says 45-65 @60 degrees for the gloss/sheen. Does anyone know, if that is the % reflectivity number we should use or is there a forumla for accounting for the...

Hello,

Has anyone successfully attempted option F (work surface LRV) in Lighting Quality for projects with residential units? We'd like to claim kitchen countertops built-in casework as...

We are planning to comply with the strategies A, B, C and F. The strategies A, B and C should not pose a problem. However, I am not sure about strategy F:

Work surfaces will be grey-white...

Curious if anyone has had success claiming some type of Industry cited / average / worst case LRV for surface finishes such as standard poured in place concrete flooring.

If not,...

Dear All,

According to LEED v4 EQC6 (Interior Lighting), all shared multi occupant spaces shall be endowed with control systems that enable occupants to adjust the lighting to meet...

Hi guys,

I'm having troubles getting datasheets with reflectance values for the project I'm working on.
Do you know where to find a good light reflectance index online that would be...

LEED v4 Interior Lighting Quality Option 2 - Strategy C

When L70 information is not available for LEDs can other rated life values (such as L90 B10 @ 50,000 Hours or the...

Hi! There are big medium and small meeting rooms featuring presentation walls. They all have direct lighting from above the tables. In the big and medium rooms there are multiple lamps which can...

Hello,

one of our projects is set to deploy automatic lighting controls depending on the actual daylight reaching a certain space. The interior lighting will be steplessly dimmed according...