A room 40 m x 15 m is to be illuminated by 1.5 m 80-W fluorescent...

A room 40 m x 15 m is to be illuminated by 1.5 m 80-W fluorescent tubes mounted 3.5 m above the working plane on which an average illumination of 180 lux is required. Using maintenance factor of 0.8 and the utilization factor of 0.5, (a) calculate the number of tubes required, (b) sketch a suitable layout. The 80-W fluorescent tube has an output of 4,500 lm.

ANS FOR A: 60 TUBES please show complete solution.

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Manojponduru answered 1 year ago

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