annual sunlight exposure (ASE)


NOTE: This term was added in RP-16-17 Addendum 1.

In daylighting: The fraction or percentage of the horizontal work plane that exceeds a specified direct sunlight illuminance level more than a specified number of hours per year over a specified daily schedule with all operable shading devices retracted.*


* Illuminating Engineering Society. IES Approved Method: Spatial Daylight Autonomy (sDA) and Annual Sunlight Exposure (ASE). New York: IES; 2012. (IES LM-83-12).

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