Daily Archives: 4th May 2016

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Calculating rooflight area: where do you start?

TechnicalBy NARM Admin 4th May 2016

CIBSE Guide A provides data which allows us to determine the appropriate design and rooflight area to provide recommended light levels for a given application.Typically, for general retail and manufacturing areas, 500 Lux is the recommended level. The graph above shows how rooflight areas will affect illumination levels. In this example for a single storey…

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