Lighting requirements to enhance productivity and comfort have been proposed for ANSI/ASHRAE/USGBC/IES Standard 189.1-2011.
This proposal addresses subsections 18.104.22.168 and 22.214.171.124, which require that occupants of certain space types be given some level of control over the light levels in that space.
Citing a research study on the effects of lighting on office workers, the proposal notes “Normally, the persistence and vigilance of office workers will decline over the course of a workday. However, the presence of personal control of their lighting increased subject motivation allowing workers to sustain their performance – they persisted longer on difficult tasks and were more accurate on a task requiring sustained attention.”
To comment on proposed changes or for more information, visit www.ashrae.com/publicreviews.