The purpose of emergency lighting is to ensure that if the normal lighting fails the escape routes routes are maintained safe to use. The alleyway above, which is a pathway from an exit, leading round the building, has no lighting at all. A night shift operates, so that persons are at work when the escape [...]
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Typical construction in factories will include roof lights like these. Should a fire occur, the steelwork in the structure loses 2/3 of its strength by about 550 degrees C. Fires can easily bring about temperatures in excess of 1000 degrees C. Structural collapse becomes a distinct possibility. Pictures of the aftermath of fires in industrial units [...]
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