North America - Page 2Stay up to date with the latest North America updates from the global tunnels industry
Conditions of contract Alex Conacher reports on the Emerald Book, published at WTC 2019
A step forward for fresh air Fathi Tarada, managing director of Mosen Ltd, reviews a new emissions guidance report issued by the World Road Association
Restoration Matthew Hubel, Schemmer Associates, discusses restoration for the City of Omaha’s Missouri River Water Resource Recovery Facility
In the clear Tunnelling below St. Louis will improve wastewater capacity and alleviate overflows, Desiree Willis, technical writer for Robbins, reports
Subsurface storage system Underground construction in Montreal is helping the city meet increasing transit system demand. Jean Habimana, Hatch, discusses the Garage Cote Vertu project
Head to the lake Construction started this year on the City of Toronto’s Ashbridges Bay Treatment Plant Outfall at Lake Ontario. Andre Solecki, Riley McMillan and Kai Fung, of Hatch, and Justyna Kempa-Teper with the City of Toronto discuss the design challenges for the project.
Corridor Connections Federal, state and other agencies are working to bring super conducting maglev technology to the United States with an initial rail line between D.C. and Baltimore. Nicole Robinson looks at what the projects entails and what the tunnelling industry can expect
Sequential excavation method tunnelling Sequential excavation method (sem) is a type of tunnel design and construction that started to gain popularity in the 1960s and 1970s. The essential component of the SEM approach is to take advantage of the natural capacity and strength of surrounding geology to support the tunnel with minimum cost and time required.
UCT 2018 T&T’s guide to UCT and highlights from the technical sessions
TAC Awards 2018 From rising stars to nationally acclaimed projects, the Tunnelling Association of Canada (TAC) presents its annual awards each fall to recognize the deserving individuals and engineering accomplishments in the Canadian tunnelling sector. The 2018 awards were presented on November 8 in Edmonton.
Time to travel Bauma, the largest trade fair in the world, opens its doors in April 2019 in Germany. This year it will feature Canada as the partner country. Event organizers Messe Munchen and VDMA invite readers to attend the show
Take initiative Lindsey Gauthier, research assistant, and Lana Gutwin, research coordinator, both of CETT, outline the work and research of the consortium, which is part of the University of Alberta
Getting clearance Navigating existing infrastructure above and below ground, Dragados/ Tomlinson has completed the first of two drives for a new stormwater storage system in Ottawa. Nicole Robinson reports
Advanced Tunnel modelling Ioannis Vazaios of Queens University and Nicholas Vlachopoulos of the Royal Military College of Canada discuss the modelling of diverse tunnelling conditions and integration of the appropriate numerical modelling technique into the design process
Risk management in major projects Four speakers from across the tunnelling industry gave their perspectives on the management of risk in tunnelling and major infrastructure projects at the October 19 British Tunnelling Society meeting. Bill Grose introduced the topic and set the scene with lessons from history, Kevin Province spoke about catastrophic events and some observations on best practice, Nigel Legge discussed causes of tunnelling failures and methods of risk management, and Patrick Barney gave the perspective of the insurance industry. This report was prepared by Martyn Noak of CH2M
Results driven A survey earlier in the year found a majority in support of updating the International Tunnelling Insurance Group’s code, T&T reports
One big bore Rail projects across North America are considering single tunnel drives, Nicole Robinson reports
What’s the Difference Ophir Wainer, Lawrence Arcand, and Blain Hunt, of T2 Utility Engineers, discuss subsurface utility engineering and utility locating
Better below Critics cite delays and cost overruns when new infrastructure is being considered and at the root of this is often construction impeded by issues with utilities. A new emphasis on underground utility engineering looks for ways to better cope with the urban subsurface, Nicole Robinson reports