. Electric railway journal . errick set on the elevated structure adjacent to theyard was used for handling the track material, whichwas distributed mostly with work trains. All steelwork for the uptown sections was delivered at the 128thStreet dock and that required by the downtown sectionsat the Perry Street dock. As material was needed itwas lightered from the railroads yards to the com- at a new location very frequently necessitated changesof gas and water pipes/ duct lines, sewers, and othersub-surface structures, because the locations of thecolumns were determined by other factors and pr
. Electric railway journal . errick set on the elevated structure adjacent to theyard was used for handling the track material, whichwas distributed mostly with work trains. All steelwork for the uptown sections was delivered at the 128thStreet dock and that required by the downtown sectionsat the Perry Street dock. As material was needed itwas lightered from the railroads yards to the com- at a new location very frequently necessitated changesof gas and water pipes/ duct lines, sewers, and othersub-surface structures, because the locations of thecolumns were determined by other factors and prac-tically without considering the sub-surface structureseven if their positions were known in advance. The foundations were built of concrete, and wereusually rectangular in plan. The top was slightly largerthan the base of the column resting on the sides tapered downward to the top of a rectangularfooting which had vertical sides varying from 1 ft. to2 ft. in depth and a horizontal offset all around, varying. ©Express Stations OUTLINE MAP OF ELEVATED LINES IN NEW YORK CITY—SOLID LINES SHOW SECTIONS IMPROVED panys docks, where it was stored temporarily until itcould be trucked to the site of the work. Here it wasdeposited in the street until it could be erected, whichgenerally meant that it remained in the street for onlya day or two. All riveting, drilling, etc., was done by compressedair, three stationary and thirteen portable compressorsbeing used. The stationary compressors were of Inger-soll-Rand make, with Nagel locomotive-type, The portable compressors were of ChicagoPneumatic Tool Company or Ingersoll-Rand make, thecapacity being 300 cu. ft. of free air per min. at a pressure of 90 lb. These were driven by 50-hp. electricmotors, taking current from the contact rail of theexisting railways. Although in some cases the erectionof the steel structure was done with gin poles andjinny winks, the greater part was done with travelers. Foundati
Size: 2257px × 1108px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
