Requirements

Choose one:OPTION 1: Simulation Using computer simulations on September 21st between 9 AM and 3 PM, show that 75 percent or more of all regularly occupied spaces achieve daylight luminance levels of at least 25 footcandles (fc) and a maximum of 500 fc.

Areas with luminance levels below or above the range are disqualified. However, designs that Incorporate view-preserving automated shades for glare control may demonstrate compliance for only the minimum 25 fc luminance level.