Project Gutenberg 2006-08-13 Public domain in the USA. 195 Brace, James H. Mason, Francis Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158 Produced by Juliet Sutherland, Jacqueline Jeremy and the Online Distributed Proofreading Team at http://www.pgdp.net "Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept.…" is a scientific publication authored by members of the American Society of Civil Engineers, specifically James H. Brace and Francis Mason. This work, written in the early 20th century, focuses on the engineering and construction challenges associated with the New York Tunnel Extension of the Pennsylvania Railroad. The likely topic of the book revolves around civil engineering techniques, specifically the methods and processes used in tunnel construction. The publication details the extensive process undertaken to construct the tunnels that extend from the Pennsylvania Railroad Terminal Station. It encompasses various aspects such as the contract signing, excavation methods, handling of spoil, and the installation of ventilation and power systems. The authors describe the innovative techniques used, including top heading and bench methods, the construction of shafts, and the elaborate planning required to navigate the complex urban environment. Through numerous illustrations and technical descriptions, the book highlights the challenges faced due to varying rock conditions, the need for precise engineering to avoid damage to surrounding structures, and the methods employed to ensure the project was completed effectively and efficiently over a span of several years. (This is an automatically generated summary.) Reading ease score: 72.3 (7th grade). Fairly easy to read. en Civil engineering -- Periodicals Railroad tunnels -- Design and construction TA Text Technology Category: Engineering & Technology 110899 2025-08-08T07:22:38.314275 text/html 107505 2006-08-13T12:04:18 text/html 2468918 2025-08-08T07:22:48.972209 application/epub+zip 2466841 2025-08-08T07:22:43.910266 application/epub+zip 95037 2025-08-08T07:22:41.083264 application/epub+zip 3208293 2025-08-08T07:22:51.646198 application/x-mobipocket-ebook 3194681 2025-08-08T07:22:46.464282 application/x-mobipocket-ebook 114131 2022-09-09T07:16:07.891670 application/x-mobipocket-ebook 92853 2025-08-08T07:22:37.756273 text/plain; charset=us-ascii 92900 2006-08-13T12:04:18 text/plain; charset=us-ascii 92923 2006-08-13T12:04:18 text/plain; charset=us-ascii 20286 2025-08-08T07:22:51.790203 application/rdf+xml 26689 2025-08-08T07:22:41.587259 image/jpeg 4776 2025-08-08T07:22:41.336268 image/jpeg 29882 2006-08-13T12:04:20 application/octet-stream application/zip 2342788 2006-08-13T12:04:22 application/octet-stream application/zip 29872 2006-08-13T12:04:20 application/octet-stream application/zip 2463258 2025-08-08T07:22:38.387298 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog