02610cam a22003253u 450000100060000000300070000600500170001300600020003000700050003200800410003704000110007804100170008905000070010610000200011324501870013326400510032030000470037133600260041833700260044433800360047050000310050650801210053752014170065853400450207565300370212065300480215770000190220585600430222499900170226719037UtSlPG20260610133438.0mcr n260607r2006||||utu|||||o|||||||||||||| d  aUtSlPG 7aen2iso639-1 4aTA1 aBrace, James H.10aTransactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 :bThe New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158 1aSalt Lake City, UT :bProject Gutenberg,c2006  a1 online resource :bmultiple file formats  atextbtxt2rdacontent  acomputerbc2rdamedia  aonline resourcebcr2rdacarrier  aRelease date is 2006-08-13  aProduced by Juliet Sutherland, Jacqueline Jeremy and the
Online Distributed Proofreading Team at http://www.pgdp.net  a"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.)  nOriginal publication data not identified  aCivil engineering -- Periodicals  aRailroad tunnels -- Design and construction1 aMason, Francis40uhttps://www.gutenberg.org/ebooks/19037  c60423d60423