Pre-Support Measures for Shallow NATM Tunneling in Urban Settings

Synopsis: Pre-support measures for urban tunneling have seen a substantial development in the recent past. Ground improvement techniques, pipe-arch and … Read more »

Selection of Alignment and Tunnelling Methods in Urban Settings

Synopsis: One of the challenges of the 21st century in urban settings is to provide solutions to increasing traffic.  The … Read more »

The Dulles Corridor Metrorail Project – Tunneling Options for Tysons Corner

Synopsis: Metropolitan Washington Airport Authority is currently undertaking the first Phase of Metro’s Extension to Northern Virginia. A wide range … Read more »