Question: Design a suitable lighting scheme for a factory 1 2 0 m times 4 0 m with average illumination of 6 0 lux. If

Design a suitable lighting scheme for a factory 120 m \times 40 m with average illumination of 60 lux. If the mounting height is 5 m, state the number, location and the space to height ratio of the lighting units of twin 40 W fluorescent tubes, each is giving 45 lm/W. Depreciation factor =0.8 and utilization factor =0.5.

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