Journal of electricity, power, and gas . Particular attention is calledto the clearness in which the tessarae in the mosaicfloor have been brought out, as well as certain discol-orations in the marble. The following is a description of the lightingequipment used in this main concourse: There are twelve outlets in the center bavs of the March 21, 1914.] JOURNAL OF ELECTRICITY, POWER AND GAS 251 room and fourteen in the bays at the windows. In eachcase an intensity of ft. candles was figured upon,the room being 128x 92 ft. in size, and 22 ft. from floorto ceiling. In the twelve larger fixtur
Journal of electricity, power, and gas . Particular attention is calledto the clearness in which the tessarae in the mosaicfloor have been brought out, as well as certain discol-orations in the marble. The following is a description of the lightingequipment used in this main concourse: There are twelve outlets in the center bavs of the March 21, 1914.] JOURNAL OF ELECTRICITY, POWER AND GAS 251 room and fourteen in the bays at the windows. In eachcase an intensity of ft. candles was figured upon,the room being 128x 92 ft. in size, and 22 ft. from floorto ceiling. In the twelve larger fixtures six 100 wattlamps with the E-100 type reflector were used, and inthe J4 other outlets five 100 watt lamps with the sametype of reflector, in both instances the top edge of thereflector bowl being placed six feet from the values of foot candles are based upon the 1913rating of clear bulb Mazda lamps, 25 per cent beingallowed for depreciation for dust on lamps and re-flectors and the blackening of lamp bulbs due to Constructional Details of Fixtures. The small illustration shows the type of equip-ment furnished in any shell which may be designed andgreat flexibility may be obtained by the use of stand-ard receptacles, holders, bodies, nipples, etc., and bythe use of the various types of reflectors obtainablefrom the manufacturers. General engineering data for the entire equipmentof the first and mezzanine floors will indicate how thetype and size of reflector is arrived at after the in-tensity in foot candles is determined upon, and willprove valuable for reference: Engineering Data First National Bank, Angeles. MazdaHeight of Foot Lamps ToCeil- Can- per Re- Ceil-ing. Size. Area. dies. Out- fix- flee- Ft. Ft. Sq. Ft. Est. lets. ture. tor. In. First Floor 12 Auditor 17x19 323 4. 1 5-100 E-100 30 Stenographer 10x12 120 5. 1 4-60 E-60 36 Cashier 8x11 8S 1 3-G0 E-60 36 Womens retiring 11x9 99 1 2-60 E-60 36 Womens toilet ... 17x10 170
Size: 2453px × 1019px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectelectricity
