Geotechnical Risk Assessment for Tunneling Projects
The flow chart shown below represents what the author believes is the nine-step process that…
Author Gary S. Brierley
Tunnel Protects Chicago Neighborhood from Flooding
A Chicago storm water diversion tunnel designed to correct a chronic flooding problem that has…
Towards Automated Concrete Spraying
Operating a concrete sprayer is one of the most demanding tasks in underground mining and…
Subsurface Conditions and Design Adequacy Risk Allocation in Design Build: Dynamics, Interactions and Interdependencies
Achieving effective and balanced risk allocation in design-build (“DB”) subsurface projects has proven to be…
Understanding the New Austrian Tunnel Method (NATM)
We all know that tunnels are essential to modern infrastructure, but what is the best…
Digging Montreal: A Renewed Focus on Upgrading Aging Utilities Has Led to a Tunneling Uptick
As one of Canada’s oldest cities, Montreal is looking to get an underground upgrade. In…
NFPA-502 Fire Protection Case Histories: Elizabeth River Tunnel and the Hugh L. Carey Tunnel
Fire and life safety systems for transportation tunnels are of paramount concern. The results of…
Portland CSO Basin: Building What Lies Beneath
The Louisville Metro area, like many cities across the country, is experiencing the effects of…
Reflections on 25 Years of Microtunneling — Q&A with GHD’s Craig Camp
Now in his 25th year in the microtunneling industry, Craig Camp has seen the technology…
A Rosetta Stone Between Geotechnical Engineer & Project Manager for TBM Tunneling
The geology intersected along a tunnel is an overriding factor in many of the decisions…