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Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The East River Tunnels. Paper No. 1159   By:

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In this detailed and informative paper, James H. Brace provides a comprehensive account of the New York Tunnel Extension of the Pennsylvania Railroad, specifically focusing on the East River Tunnels. Brace meticulously outlines the construction process, challenges faced, and engineering techniques utilized in the development of these vital transportation infrastructure projects.

With thorough research and meticulous attention to detail, Brace offers valuable insights into the intricacies of tunnel construction and the impact of these projects on the development of New York City's transportation network. The paper is not only a testament to Brace's expertise in civil engineering but also serves as a valuable resource for anyone interested in the history and engineering of tunnel construction.

Overall, Brace's paper in Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 is a highly informative and well-written piece that sheds light on the significance of the New York Tunnel Extension of the Pennsylvania Railroad. It is a must-read for engineering enthusiasts and historians alike.

First Page:

AMERICAN SOCIETY OF CIVIL ENGINEERS

INSTITUTED 1852

TRANSACTIONS

Paper No. 1159

THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD.

THE EAST RIVER TUNNELS.[A]

BY JAMES H. BRACE, FRANCIS MASON, AND S. H. WOODARD, MEMBERS, AM. SOC. C. E.

This paper will be limited to a consideration of the construction of the tunnels, the broader questions of design, etc., having already been considered in papers by Brig. Gen. Charles W. Raymond, M. Am. Soc. C. E., and Alfred Noble, Past President, Am. Soc. C. E.

The location of the section of the work to be considered here is shown on Plate XIII of Mr. Noble's paper. There are two permanent shafts on each side of the East River and four single cast iron tube tunnels, each about 6,000 ft. long, and consisting of 3,900 ft. between shafts under the river, and 2,000 ft. in Long Island City, mostly under the depot and passenger yard of the Long Island Railroad. This tube tunnel work was naturally a single job. The contract for its construction was let to S. Pearson and Son, Incorporated, ground being broken on May 17th, 1904. Five years later, to a day, the work was finished and received its final inspection for acceptance by the Railroad Company.

The contract was of the profit sharing type, and required an audit, by the Railroad Company, of the contractor's books, and a careful system of cost keeping by the Company's engineers, so that it is possible to include in the following some of the unit costs of the work... Continue reading book >>


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