The New York Tunnel Extension of the Pennsylvania Railroad.

Meadows Division and Harrison Transfer Yard. - Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 - Paper No. 1153

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Author: E.B. Temple
Published: 1910
Language: English
Wordcount: 4,299 / 20 pg
Flesch-Kincaid Reading Ease: 65.9
LoC Categories: T, TF
Downloads: 281
Added to site: 2006.03.19
mnybks.net#: 13106
Origin: gutenberg.org
Genre: Non-fiction
Excerpt

length of each bridge being about 450 ft. The floors consist of I-beams embedded in concrete.

The Hackensack River Draw-bridge consists of six spans of deck plate girders, each 110 ft. long, and a draw-span 300 ft. long, operated by two 70-h.p. electric motors. The masonry was constructed under contract dated August 25th, 1905, with the Drake and Stratton Company, of Philadelphia; and the steelwork was furnished and erected by the Pennsylvania Steel Company, of Steelton, Pa. An important and interesting feature of the draw-bridge is the lift rail, and new rail-locking device. Mitered rails are used, with sufficient opening between the ends to prevent binding at times of expansion. It was deemed advisable that the mitered joint should occur on the abutment, or fixed span, instead of at the opening at the end of the draw. The lift rail, therefore, was a necessity; and the design, as shown on Plate XX, was perfected. It consists of lift-rails, 8 ft. 4 in. long, moving vertically 8 in. at the free end, re

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