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Two other papers from ASCE Transactions LXVIII (September1910) are referenced in this paper:
No. 1150, “The New York Tunnel Extension...” by Charles W. Raymond,available from Project Gutenberg as e-text18229.
No. 1151, “The North River Division” by Charles M. Jacobs, e-text18548, generally cited as “the paper by Mr. Jacobs”.
The word “Figure” is used in two ways. It refers either to individualnumbered Figures (1-21), or to any of the four pictures that make upeach Plate, identified in the form “Fig. 2, Plate XXI”. Figures 1-4are always discussed as a group.
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List of Illustrations (added by transcriber)
84
Location.—That section of thePennsylvania Railroad’s New York Tunnels lying west of the Hudson Riveris designated Section “K,” and the tunnels are generally spoken of asthe Bergen Hill Tunnels. Bergen Hill is a trap dike (diabase) formingthe lower extension of the Hudson River Palisades.
There are two parallel single-track tunnels, cross-sections of whichare shown on Plate VIII of the paper by Charles M. Jacobs, M. Am.Soc. C. E. The center line is a tangent, and nearly on the line of32d Street, New York City, produced, its course being N. 50° 30' W. Theelevation of the top of the rail at the Weehawken Shaft (a view ofwhich is shown by Fig. 2, Plate XXII),on the west bank of the Hudson River, is about 64 ft. below mean highwater; and at the Western Portal, or Hackensack end, the rail is about17 ft. above; the grade throughout is 1.3%, ascending from east to west.The length of each tunnel between the portals is 5,920 ft.
A general plan and profile of these tunnels is shown on Plate I ofthe paper by Charles W. Raymond, M. Am. Soc. C. E. At85Central Avenue a shaft 212 ft. deep was sunk. It is 3,620 ft. from theWeehawken Shaft.
PLATE XXI.
TRANS. AM. SOC. CIV. ENGRS.
VOL. LXVIII, No. 1154.
LAVIS ON
PENNSYLVANIA R.R. TUNNELS: BERGEN HILL TUNNELS.
...