1926.56(a) General. Construction areas, ramps, runways, corridors, offices, shops, and storage areas shall be lighted to not less than the minimum illumination intensities listed in Table D-3 while any work is in progress:
HAZARD: Employees exposed to struck by/vision obstruction hazards.
ABATEMENT: General construction areas MUST be illuminated to not less than 5 foot-candles of illumination while any work is in progress.