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ABA Accessibility Standard for GSA Facilities Pocket Guide

Foot-candle. The illumination on a surface one square foot in area on which there is a uniformly distributed flux of one lumen, or the illuminance produced on a surface all points of which are at a distance of one foot from a directionally uniform point source of one candela. (41 CFR, Chapter 102, Subchapter C, Part 102-71, Sec.  102-71.20  What definitions apply to GSA's real property policies?)

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