Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910: The New York Tunnel Extension of the Pennsylvania Railroad: The Terminal Station - West

''Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept.…'' is a scientific publication detailing the engineering work related to the New York Tunnel Extension of the Pennsylvania Railroad, authored by B.F. Cresson, Jr., a member of the American Society of Civil Engineers. Written in the early 20th century, this volume documents specific technical and construction processes involved in the expansion of railway infrastructure, with a focus on the terminal station's west section. The book provides a comprehensive overview of the construction process, including the geographical scope, materials used, and detailed methodologies for excavation and structural support. Cresson outlines the logistical challenges posed by the existing urban environment, such as removing numerous buildings and ensuring the stability of adjacent structures. He meticulously describes the engineering decisions taken throughout the project, from the geological composition of the site to the careful planning required to maintain traffic flow on the elevated railways during the construction. The publication also includes statistics on excavation quantities and labor efficiency, reflecting the significant scale and complexity of the engineering work involved in this substantial transportation infrastructure project.