Illumination Levels

Application Minimum maintained mean illuminance (lux) Illuminance uniformity (minimum/average)
Open plan office: mainly screen based work 300 0.60
Open plan office: mainly paper based work 500 0.60
Deep plan core area (more than 6 m from window) 500/750* 0.60
Cellular Office - mainly screen-based work 300 0.60
Cellular Office - mainly paper-based work 500 0.60

* The maintained illuminance in the deep plan core area should be related to the illuminance of the area near the windows. For an illuminance of 300 lux near the windows, the deep plan core area should be lit to 500 lux; where 500 lux is used for the area near the windows, a maintained illuminance of 750 lux should be used in the deep plan core area.

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