Location

New York, New York

Date

16 Apr 2004, 8:00am - 9:30am

Abstract

The 53m deep, 1.2m thick, heavily reinforced diaphragm wall, constructed to form this vent shaft, would not normally merit special mention. What makes this project notable is that the work was carried out within the confines of a very small city site, surrounded by residential properties, immediately adjacent to an operating rail line and with strict limits on permitted working hours and noise levels. This paper describes the construction phase of the work including the planning, preparation, means and methods undertaken to overcome the constraints noted above. Because of the potential problems and consequently the inherent significant construction risk the work was undertaken by a joint venture of two of the largest international foundation specialists even though the monetary value was quite small. At the time both companies considered the work to be at the limits of what was practicably achievable. After successful completion those limits may have been pushed back, but perhaps only a little.

Department(s)

Civil, Architectural and Environmental Engineering

Meeting Name

5th Conference of the International Conference on Case Histories in Geotechnical Engineering

Publisher

University of Missouri--Rolla

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Channel Tunnel Rail Link – Contract 220 Graham Road Deep Vent Shaft

New York, New York

The 53m deep, 1.2m thick, heavily reinforced diaphragm wall, constructed to form this vent shaft, would not normally merit special mention. What makes this project notable is that the work was carried out within the confines of a very small city site, surrounded by residential properties, immediately adjacent to an operating rail line and with strict limits on permitted working hours and noise levels. This paper describes the construction phase of the work including the planning, preparation, means and methods undertaken to overcome the constraints noted above. Because of the potential problems and consequently the inherent significant construction risk the work was undertaken by a joint venture of two of the largest international foundation specialists even though the monetary value was quite small. At the time both companies considered the work to be at the limits of what was practicably achievable. After successful completion those limits may have been pushed back, but perhaps only a little.