Tunnelling 50 Years Ago

This article reports on a 50-year retrospective of tunneling practices and the shifting relationships between contractors and client agencies and the independent engineer. Contracts were much simpler in the 50s and 60s, with little provision for sharing risks. Because there were more contractors then, there was little concern about unfair monopoly practices. The area where there have been the biggest advances is safety. Another area of significant change is the shift from relying solely on cast iron to line tunnels. Highly engineered brick linings for tunnels that carried substances like water are also no longer in use. Other areas of change include hand tunneling, tunneling machines, surveying techniques and tunneling in rock. Details are given about key historical tunneling jobs.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Authors:
  • Bevan, Oliver
• Publication Date: 2007-2

Language

• English

Media Info

• Media Type: Print
• Features: Photos;
• Pagination: pp 44-46
• Serial:
  • Tunnels & Tunnelling International
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Concrete; History; Occupational safety; Shields (Tunnels); Tunnel lining; Tunneling; Tunneling machines
• Subject Areas: Bridges and other structures; Construction; History; Public Transportation; Safety and Human Factors;

Filing Info

• Accession Number: 01044928
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Mar 22 2007 1:49PM