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NC-v4 EQc6:Interior lighting

Option 2 Documentation

When it comes to option 2 it is request to describe the method for determining reflectance values. Would a prescriptive descriptive apporach be accepted i.e. based on colour selection? For example a white paint obviously has a reflectence of 85%.

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Melissa Kelly
Sustainability Specialist
Gensler
LEEDuser Basic Member
66 thumbs up

Tue, 07/07/2015 - 16:15

Hi Charalampos, In the Step-by-Step Guidance section of the Reference Guide, there's a list of three different acceptable sources for reflectance values: cutsheets from the manufacturer, values from industry standard charts, or actual measurements of finish samples. Common finishes should be included in reflectance charts and it sounds like it is okay to use those values if manufacturer data cannot be found.

Tue, 07/14/2015 - 08:26

Hi Melissa, thanks for the reply. If we use reflectance charts, such as “Lighting Guide 11, Surface Reflectance and Colour” (referenced in Option 2, p. 716), I am wondering whether simple reference to the colour and hue of the work surface and movable partitions would be an acceptable way of proving the (corresponding) reflectance value.

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