Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 - The Site of the Terminal Station. Paper No. 1157

George C. Clarke

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• Publié le: 08 décembre 2010
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• Langue: English
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The Project Gutenberg EBook of Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910, by George C. Clarke This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org

Title: Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910  The Site of the Terminal Station. Paper No. 1157 Author: George C. Clarke Release Date: May 17, 2006 [EBook #18408] Language: English Character set encoding: ISO-8859-1 *** START OF THIS PROJECT GUTENBERG EBOOK SOCIETY OF CIVIL ENGINEERS ***

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AMERICAN SOCIETY OF CIVIL ENGINEERS INSTITUTED 1852

TRANSACTIONS

Paper No. 1157

THE NEW YORK TUNNEL EXTENSION OF THE PENNSYLVANIA RAILROAD. THE SITE OF THE TERMINAL STATION. 1 B Y G EORGE C. C LARKE , M. A M . S OC . C. E.

The purpose of this paper is to describe the preliminary work for and the preparation of that portion of the site for the Terminal Station in Manhattan, of the New York Tunnel Extension of the Penns lvania Railroad, which was

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341

Pennsylvania Station, New York City: Plan Showing Area at Track Level In June, 1903, when the writer's connection with the work began, the preliminary surveys had been completed and the location and extent of the Terminal track area had been fixed, in so far as the city blocks to be occupied were concerned. This contemplated area, however, did not include the portion between Ninth and Tenth Avenues, that being added subsequently. The elevation of the track level had also been fixed by the requirement in the agreement with the City that no part of the permanent structure should approach within 19 ft. of the surface under any avenue or under any street except within the Terminal area. The nearest approach of the tracks to the surface is at a point 320 ft. east of Eighth Avenue, where the top of the rail is 40 ft. below the 31st Street curb line. W ASH -B ORINGS . The general plan of enclosing the area in retaining walls having been adopted, wash-borin s were taken, for the ur ose of determinin the best location for

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344 [343]

PROFILE OF ROCK SURFACES IN THIRTY-FIRST AND THIRTY-THIRD STREETS, BETWEEN SEVENTH AND NINTH AVENUES. S EWERS . The arrangement of the sewers in the streets in the vicinity of the Terminal Site, previous to the beginning of the construction, and the drainage area tributary to those sewers, is shown byFig. 2. The main sewer for this district was in Eighth Avenue, and was a 6-ft. circular brick conduit within the Terminal area. The sewers leading to it from the west, in 31st, 32d, and 33d Streets, were elliptical, 3 by 2 ft., and egg-shaped, 4 ft. by 2 ft. 8 in., although in no case did they drain more than one block, and they were on a heavy grade. Draining into Eighth Avenue from the east, the one on 31st Street was 4 ft. b 2 ft. 8 in., e -sha ed,

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