Note: | This section establishes minimal levels of lighting for safety purposes only. Guidelines pertaining to optimal levels of lighting and illumination may be found in Practice for Industrial Lighting, ANSI/IES RP7-1979. |
Lighting Table | ||
Activity | MinimumAcceptableaveragelighting levelin an area: | Any one single measurement used to determine the average lighting level* cannot be less than: |
(Foot-candles) | (Foot-candles) | |
Indoor task | 10 | 5 |
Outdoor task | 5 | 2.5 |
Nontask activities for both indoor and outdoor | 3 | 1. 5 |
*Lighting levels must be measured at thirty inches above the floor/working surface or at the task.
Notes: | 1. Lighting levels can be measured with a light meter. 2. Conversion information: 1 foot candle = 1 lumen incident per square foot = 10.76 lux. |
Wash. Admin. Code § 296-307-57005
Statutory Authority: RCW 49.17.010, [49.17].040, and[49.17].050 . 01-17-033, § 296-307-57005, filed 8/8/01, effective 9/1/01.