IEVref:845-29-145ID:
Language:enStatus: Standard
Term: maintained lighting value
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Definition: value used in lighting calculations that consider (a) the lamp luminous flux depreciation at the planned time of replacement, (b) the luminaire dirt depreciation, and (c) the room surface dirt depreciation (in interiors) or the surface dirt depreciation for other relevant surfaces (in exteriors, where appropriate)


Publication date:2020-12
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