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July 15, 2006
URS/Dr. Sauer Corporation JV Awarded the Construction Inspection Services Contract for Devil’s Slide Tunnel
Services Provided by URS/DSC
The URS / Dr. G. Sauer Corporation JV was awarded the Caltrans on-call contract for providing Construction Inspection Services for the Devil’s Slide Tunnel project in Pacifica, California. The URS/DSC JV will provide SEM/NATM engineers and field inspectors, engineering geologists, civil, mechanical and electrical inspection personnel and other technical support services as needed. URS/DSC will be working as an integrated Team with the Caltrans Construction Management Team in their field office, which is located in Pacifica, just South of San Francisco.
June 02, 2006
NAT 2006 in Chicago
Chicago hosts this years' North American Tunneling Conference; please follow this link to the home page of the Society for Mining, Metallurgy and Exploration's homepage.
November 01, 2005
Transportation & Mobility Conference
Third Annual Houston Transportation and Mobility Conference on December 1st and 2nd, 2005.
The Transportation and Mobility Conference is a communication forum designed to assist individuals and institutions better understand the many transportation and mobility challenges encountered in the Houston Metropolitan area.
August 19, 2005
Boston's Silverline Phase II Opens!
MBTA of Boston, MA opens first new transit tunnel line since 1918. The opening marked the completion of the Silverline Phase II segment of the Bus Rapid Transit system in the downtown business district. The new tunnel route is constructed beneath the historic Russia Wharf waterfront complex and crosses the Fort Point channel to the Court House Station. To complete this challenging engineering project several innovative methods of tunnel construction were used, including NATM and immersed tube tunnels.
August 17, 2005
Urban Traffic Arterials – True Cost?
Traffic Planners in urban areas have three options for establishing new arteries or expanding existing lines: to locate them at grade, to elevate them or to put them underground. Unfortunately, capital costs are usually the governing factor used for deciding which option to use. As environmental, social and real estate issues are increasingly getting into the equation as do maintenance and operational costs, planners may look underground for the solution.
August 16, 2005
Recent Advances in Geotechnical Engineering Seminar
Boston Society of Civil Engineers Section - ASCE
The BSCES Geo-Institute will be holding a one-day seminar on "Recent Advances in Geotechnical Engineering" on Saturday, October 29, 2005 at Bentley College. Over ten speakers will cover topics such as recent advances in automated data collection, field testing, composite/light weight materials, alternative foundation systems and innovative tunnel construction techniques.
July 11, 2005
Tunneling starts at Beacon Hill
July 5, 2005 - Just arrived at the Port of Seattle, Sound Transit's new Mitsubishi tunnel boring machine (TBM) after transport from the factory located in Kobe, Japan. The TBM will be used to construct the twenty foot diameter parallel running tunnels for Sound Transit's Link Light Rail through Seattle's Beacon Hill. The tunnels will pass through the Beacon Hill Station complex located mid-way along the line as shown below.
June 27, 2005
RETC Seattle 2005
The 2005 Rapid Excavation and Tunneling Conference was held in Seattle, WAfrom June 27 - 29, 2005. This year’s conference offered a diverse array of interesting papers that spanned all aspects of underground construction and tunneling, as well as a forecast for future projects. One of the highlights of the event was a site tour atSound Transit's Beacon Hill Station project site. The underground station will be a crucial part of the Seattle Link Light Rail expansion and was designed by the Dr. G. Sauer Corporation (DSC) as a subcosultant to the Hatch Mott MacDonald / Jacobs Joint Venture.
April 25, 2005
Dry Cut-and-Cover Station for MBTA in Boston
With the recent opening of the Silverline Phase II the MBTA did not only put in service a 2 mile long section of running tunnels containing technically challenging segments such as immersed tubes through the Fort Point Channel and NATM binocular tunnels at the historic Russia Wharf Building, but also opened two new underground stations along the alignment.
February 22, 2005
Beacon Hill Progress: Slurry Wall Construction in Progress
The construction at Sound Transit's Beacon Hill Station is progressing on schedule. The construction of slurry wall panels for Headhouses and Shafts has been started recently.
Meanwhile, exploratory drilling is under way to determine the extent of water bearing sand and silt layers. These will be improved by jet grouting from the surface and dewatering with deep wells.