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A room measuring 40 ft by 80 ft is to be illuminated by fluorescent lamps. Each fixture has 2 fluorescent lamps having an output of 3300 lumens per lamp. The Maintenance factor and utilization factor are 0.65 and 0.75 respectively. If the Required illumination is 60 footcandles, calculate the number of fixtures required.
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Transcribed Image Text:A room measuring 40 ft by 80 ft is to be illuminated by fluorescent lamps. Each fixture has 2 fluorescent lamps having an output of 3300 lumens per lamp. The Maintenance factor and utilization factor are 0.65 and 0.75 respectively. If the Required illumination is 60 footcandles, calculate the number of fixtures required.
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