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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Large Cross Sections for Soft Ground and Soft Rock Conventional Tunneling Projects in Urban Areas – Recent Developments in the US

Synopsis: With the demand for tunnels growing, especially in urban areas, the ability to construct these tunnels without disrupting congested

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Innovative Rehabilitation of Existing Tunnels Under Minimum Impact on Operation

Synopsis: The authors have successfully developed an innovative rehabilitation concept, which meets actual technical standards and minimizes the impact on

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Self-Bearing Shotcrete in Lieu of Self-Consolidating Concrete for Tunnel Rehabilitation

Synopsis: Pennsylvania Department of Transportation’s almost 100 year old Liberty Tunnels underwent significant rehabilitation measures, including the replacement of aging

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NATM Excavation and Support Design and Construction of the Caldecott Fourth Bore

Synopsis: The two-lane, 1,036 m long (3,399 ft) Caldecott Fourth Bore opened to traffic in November 2013 and along with

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Istanbul Strait Road Tube Crossing Project: Independent Design Verification Engineer’s Perspective

Synopsis: The iconic Istanbul Strait Road Tube Crossing Project (Eurasia Tunnel) will ease traffic congestion over the Bosphorus Strait separating

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Impact of the 2010–2011 La Niña Weather Phenomenon on Terrain Stability and Utilization of Long Tunnels for Mitigation Along the Ruta del Sol Project Alignment in Colombia, South America

Synopsis: The Ruta del Sol Road Project is located in the seismically active Eastern Cordillera of Colombia, South America and

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State-Of-The-Art Application of Conventional Tunneling for the Northern Boulevard Crossing – East Side Access to Grand Central Terminal, New York

Synopsis: The East Side Access project in New York City, which will provide a new connection for the Long Island

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Soft Ground to Hard Rock – Versatile Tunnelling Methods in Urban Areas

Synopsis: The implementation of modern tunneling techniques in urban areas provides a way to expand infrastructure with little disturbance to

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