Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 61
ugh rule, given in theAmerican Code on Factory Lighting,is worth bearing in mind :— With modern lamps roughly onecandlepower per square foot produces aneftective illumination of 3 foot-candleswhen the lam])S are arranged according tothe uniformly distributed overheadsystem, with mounting heights… … Fig. 3.—Gds Lij^hting (low pressure) of a small workshop with well-screened lamps.Illumination, provided by hjcal lights, on the benches on the right, 13—20 ft.-candles ; on thetables in the centre of the room the general illumination was 57—10.5 ft.-candles ; at floor-level in gangway, 61—71…
Lighting
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