PDFWAC 388-97-3140
Illumination levels in new buildings and additions.
The nursing home must ensure:
(1) Lighting fixtures and circuitry provide at least the illumination levels appropriate to the task;
(2) Design takes into consideration that lighting systems normally decrease in output with age and dirt accumulation; and
(3) Light fixture locations and switching arrangements are appropriate for the needs of the occupants of the spaces and follow Illuminating Engineering Society (IES) recommendations for health care facilities.