. Railroad digest . nces and Related Matters 417 Car Equipment, Appliances and Related Matters 427 Shop Practice, Machinery and Tools 43° Electrical Equipment, Machinery and Appliances 432 Conducting Transportation 433 Medical and Surgical Matters 433 Miscellaneous 434 [ Maintenance of Way, Bridges and Building 3 Proposed Changes in the Park AvenueTunnel Engineering News, Oct. 17, 1901, p. have been recently submitted by the N. T. C. & H. to the New York Board of Health outlining changes in thetunnel through which the railways reach the Grand CentralStation at 42d street. In the
. Railroad digest . nces and Related Matters 417 Car Equipment, Appliances and Related Matters 427 Shop Practice, Machinery and Tools 43° Electrical Equipment, Machinery and Appliances 432 Conducting Transportation 433 Medical and Surgical Matters 433 Miscellaneous 434 [ Maintenance of Way, Bridges and Building 3 Proposed Changes in the Park AvenueTunnel Engineering News, Oct. 17, 1901, p. have been recently submitted by the N. T. C. & H. to the New York Board of Health outlining changes in thetunnel through which the railways reach the Grand CentralStation at 42d street. In the illustration the dotted lines indi-cate the existing construction of stone masonry. It is proposedto remove all masonry except the vertical portions of the out-side walls. These will be strengthened by additional masonry tomake vertical retaining walls up to the level of the roof of thetunnel. The roof will be formed of concrete carried by I-beamsresting at their outer ends upon these retaining walls, and near. the line of (Im imsinl ml. 1 wills, n]i(iM lon^ituchnalgirders supported by a hue of bteel with foundationsat floor level. The roof beams will be spaced about 3 ft. to 4 centers, and the columns 17 ft. in the direction of the lengthof the tunnel. The roof construction will extend a short dis-tance beyond the line of the columns, leaving an open space inthe center considerably wider than the openings in the roof ofthe present tunnel. Between the columns in the tunnel a wallof masonry will be carried up to a height of 6 ft. as a guard toprotect the columns in case of derailment. The proposal is for the present to reconstruct the tunnelaccording to this plan for only a comparatively short blocks is contemplated as an experiment. Should the con-struction satisfy all requirements, it would then be carried outon the remaining sections of the tunnel. The Derail; Past, Present and Future Railroad Gazette, Oct. 11, 1901, p. paper
Size: 2434px × 1027px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901
