. Railway mechanical engineer . or. There are in addition twelve 100-watt lamps(lights C—Fig. 1) in flat cone reflectors on each side of thebay, or a total of twenty-four 100-watt units. reflectorsare suspended under the crane track, are evenly spaced 22 and are installed to give a mounting height of 12 approximately one watt per square foot this installationgives an average illumination of seven foot candles. shows the machine shop crane bay at night with artificialillumination. There is hardly a shadow to be seen and allparts of the shop stand out in clear relie
. Railway mechanical engineer . or. There are in addition twelve 100-watt lamps(lights C—Fig. 1) in flat cone reflectors on each side of thebay, or a total of twenty-four 100-watt units. reflectorsare suspended under the crane track, are evenly spaced 22 and are installed to give a mounting height of 12 approximately one watt per square foot this installationgives an average illumination of seven foot candles. shows the machine shop crane bay at night with artificialillumination. There is hardly a shadow to be seen and allparts of the shop stand out in clear relief. The photographshows the location of the various fixtures very clearly, especi-ally those which are suspended from the crane track. M.^CHINE SHOP The machine shop main bay, as shown in Fig. 1, is 265ft. long and 68 ft. wide, and the distance from the floor tothe bottom of the roof truss is 20 ft., or 62 ft. lower than themachine shop crane bay just described. A special condition was met in this shop which necessi-. Fig. 2—Night View of Erecting and Boiler Shop tated a slight departure from the standard scheme of mount-ing large units as high as possible. The machines in thi<sliop are Ijelt driven from overhead line shafts, so that inorder to avoid shadows the lamps were suspended lielow theline of belting, as shown in Fig. 4. The lighting in this bayconsists of ninety-two 100-watt bowl frosted lamps (lightsE—Fig. 1) in shallow bowl reflectors arranged in four rowsof lamps each The units are evenly spaced in rectangles15 ft. by 11 ft. and are suspended from the roof trusses S(jas to give a mounting height of 11 ft. With watt jx-rsquare foot, this arrangement gives an average illuminationof over five foot-candles on a reference plane o ft. above thtfloor. The arrangement of circuits and lamps is .shown in thelower left hand corner of the wiring diagram in Fig. 1. Photo-graphs showing night views of this shop are reproduced inFig. 4. It should be noted
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
