Design Guidelines for Sequential Excavation Method (SEM) Practices for Road Tunnels in the United States

Synopsis: In the last 20 years the Sequential Excavation Method (SEM) or the New Austrian Tunneling Method (NATM) has been … Read more »

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 … Read more »

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 … Read more »