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Stay up to date with the latest North America updates from the global tunnels industry

Latest North America Update

Advanced Tunnel modelling 16 July, 2018 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 > read more

What’s the Difference 16 July, 2018 Ophir Wainer, Lawrence Arcand, and Blain Hunt, of T2 Utility Engineers, discuss subsurface utility engineering and utility locating

Better below 04 July, 2018 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

Good neighbor 04 July, 2018 Paola De Pascali spoke with Walsh/Shea Corridor Constructors about the challenges of the Metro Crenshaw/LAX Line in Los Angeles

Ground control 18 October, 2017 Joseph Sopko, director of ground freezing for Moretrench, discusses the design of frozen Earth structure for cross passage excavation

In the field 18 October, 2017 In June students from the geomechanics graduate program at Queen’s University in Kingston, travelled to Europe for two weeks of research and tours—seeing first hand the challenges and innovative solutions required to complete the region’s impressive geological engineering projects. Mark Diederichs reports

Working remotely 18 October, 2017 Nichole Boultbee, engineering geologist with Golder Associates Ltd. and Oliver Robson, project manager with Innergex Renewable Energy Inc., report on the challenges of working in a remote and sensitive environment for the now operational Upper Lillooet River hydro facility

In the nick of time 18 October, 2017 To secure the potable water supply for Montreal, a new intake tunnel is being built with a fast-track design and construction schedule. Jean Habimana, regional tunnel practice lead - east region for Hatc

Investigate and implement 17 October, 2017 Toronto is preparing to build 22km of tunnels to improve waterways in the Great Lakes Basin. Mark Bruder of R.V. Anderson Associates Limited, Daniel Cressman of Black & Veatch, and Robert Mayberry with the City of Toronto outline the geotechnical investigation program for the Don River and Central Waterfront Wet Weather Flow System

Bonding well 29 August, 2017 To repair a limestone block tunnel more than 120 years old, a local watershed agency and its engineering consultant devised a solution using shotcrete to create a tunnel in a tunnel. Nicole Robinson reports on the Trout Brook Storm Sewer Interceptor’s rehabilitation

Draw from Experience 06 July, 2017 Wellpoint installation under hydraulic pressure for dewatering for cross passage construction on Toronto’s Eglinton Crosstown LRT project

Next exit 06 July, 2017 The Eglinton Crosstown LRT is Ontario’s largest transit expansion to date. Two contracts constructed 10km of underground alignment for the 19km line. Jordan Schreiner and Matthew Geary of Hatch, with Tibor Szekely of Metrolinx, discuss the completion of the East Tunnels and TBM removal

Joint effort 05 July, 2017 Sarah Wilson and William Edgerton of McMillen Jacobs Associates report on use and abuse of the schedule during procurement and construction

On a grand scale 05 July, 2017 Atlanta’s water supply program will transform a quarry into one of the largest reservoirs in
North America, Desiree Willis, technical writer for Robbins, reports

Nature’s Gift 22 March, 2017 “Nothing is too big for us. Nothing is too expensive to imagine. Nothing is too visionary,” Sir Adam Beck said. His legacy powers much of Ontario and is preserved in Sir Adam Beck I and II generating stations at Niagara Falls, Nicole Robinson reports

Getting there 22 March, 2017 Moving oversized cargo takes coordination and requires extensive research. Tunnels & Tunnelling speaks to three organizations that specialize in taking on this heavy lifting

Municipal Growth 22 March, 2017 Demand for microtunnel construction in Ontario for municipal pipelines has grown remarkably. Nicole Robinson reports on the Centre of Advancement for Trenchless Technology’s upcoming workshop

Shape Matters 22 March, 2017 Sarah Cain and Mark Diederichs of the Geological Sciences and Geological Engineering department of Queen’s University in Kingston, Ontario, study the impact of tunnel shape and profile details on brittle damage development

TAC Awards 2016 10 January, 2017 The Tunnelling Association of Canada (TAC) presents its annual awards each fall to recognise the deserving individuals and projects in the Canadian tunnelling sectors. The 2016 awards were presented on October 17 in OTtawa. Congratulations to all of this year’s winners

Marathon machine 10 January, 2017 Only one TBM is excavating the whole of the 45km DigIndy tunnel system. Robbins technical writer, Desiree Willis, explains how this refurbished machine will be up to the task and what it means for future projects of this size

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