Publications

Our dedicated team of experts are authors and co-authors of several technical papers on the subject of tunneling and geotechnical engineering.

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NATM Through Clean Sands – The Michigan Street Experience

Synopsis: A 100 ft long, 20 ft high and 18 ft wide NATM tunnel was excavated through grouted clean sands

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Estimating Lateral Support Pressure for Rock Cuts at Washington-Dulles International Airport Expansion

Synopsis: Washington-Dulles International Airport (Virginia, USA) has been expanding its capacity since 1999. This expansion has required extensive vertical, open-cut

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The Dulles Corridor Metrorail Project – Tunneling aspects of the Metrorail extension to Washington, DC Dulles International Airport Phase I and Phase II

Synopsis: The Virginia Department of Rail and Public Transportation (DRPT) is currently undertaking the extension of Washington Metropolitan Area Transit

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Shotcrete Constructed Cut and Cover Tunnel Portal

Synopsis: The reconstruction of the Weehawken Tunnel for the New Jersey Transit Hudson-Bergen Light Rail System is about to be

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NATM for Singapore

Synopsis: Singapore has some experience in the application of NATM for tunnel construction. To date, tunnels of smaller size have

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Shotcrete for Tunnel Final Lining – Design and Construction Considerations

Synopsis: The use of shotcrete for tunnel final linings has gained increased popularity on a national and international basis. The

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Bergen Tunnels Rehabilitation – A Success After All

Synopsis: 2001, the New Jersey Transit Authority commissioned the JV Merco-Obayashi with the rehabilitation contract of the approximately 130-year-old, 4,200

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