Solve for the number of luminaires. The type of structure is an indoor basketball court having a floor area of 40 feet wide by 60 feet long. The total height of the court from floor to roof if 17 feet. The ceiling cavity height is 2.6 feet. For a 100 watts incandescent bulb, it produces 2,120 lumens. Use 300 watts incandescent bulb. For the foot candle, use 125 fc. Use 80% ceiling reflectance, 50% wall reflectance, and 20% reflectance. For the luminaire dirt depreciation (LDD) the luminaire is presumed to be clean which has a mean value of 0.80. (Use the English system in computing for the number of luminaires).
Solve for the number of luminaires. The type of structure is an indoor basketball court having a floor area of 40 feet wide by 60 feet long. The total height of the court from floor to roof if 17 feet. The ceiling cavity height is 2.6 feet. For a 100 watts incandescent bulb, it produces 2,120 lumens. Use 300 watts incandescent bulb. For the foot candle, use 125 fc. Use 80% ceiling reflectance, 50% wall reflectance, and 20% reflectance. For the luminaire dirt depreciation (LDD) the luminaire is presumed to be clean which has a mean value of 0.80. (Use the English system in computing for the number of luminaires).
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Solve for the number of luminaires. The type of structure is an indoor basketball court having a floor area of 40 feet wide by 60 feet long. The total height of the court from floor to roof if 17 feet. The ceiling cavity height is 2.6 feet. For a 100 watts incandescent bulb, it produces 2,120 lumens. Use 300 watts incandescent bulb. For the foot candle, use 125 fc. Use 80% ceiling reflectance, 50% wall reflectance, and 20% reflectance. For the luminaire dirt depreciation (LDD) the luminaire is presumed to be clean which has a mean value of 0.80. (Use the English system in computing for the number of luminaires).
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