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…
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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…
Sydney Gets $3B (AUS) for New Metro Rail Line
Australia’s most economically vibrant state, New South Wales (NSW), has announced plans to invest AUD$3…
Weighing the Options: Is Industry Bias Toward New Machines Limiting?
Much has been made worldwide of the difference in performance between new and rebuilt TBMs.…
Groundwater – The Relentless Enemy
Specialty geotechnical contractors such as Hayward Baker, Moretrench – now a Hayward Baker Company –…