When peforming the exterior illumination measurements, do both horizontal and vertical foot-candle measurements need to be taken? Or just one or the other?

Does the option 2 exemption for exterior lighting apply to fixtures with ratings greater than 50 watts but using lamps 50 watts or less? We have a project with unshielded exterior light fixtures...

When finding the difference between light measurements when fixtures are on and off, if the difference is above 20% but the footcandle measurement is below the Maximum Illumination Value for the...

Our project is an office space within a warehouse. The only exterior light fixture attached to our property is at the back entrance of our parking garage. Can we still achieve this credit if the...

Our project has exterior lighting that is fully shielded, however a few streetlamps on the project boundary emit ample light to the night sky. These lamps are on the sidewalk, but technically...

Our building is a warehouse with only a single string of clerestory windows at the peak of a gabled roof. All interior light fixtures are ceiling hung T-8s that are 10-12 feet below the bottom...

My project is a resort building where the public areas (lobby ,corridors etc )have automatic control panels to switch off lights after 11 pm.However,the remaining portion i.e. the guest rooms...

So would the minimum performance period for this credit be 1 week or is it 90 days?

Our project boundary is one feet thick masonry wall with wall lamps. Kindly share whether the measurement points at the perimeter should be inside the project boundary or outside, to meet the...

I registered a number of 0.0 footcandle locations, with lights both on and off. Will that be a concern or problem in submitting the data?