North America - Page 1
Stay up to date with the latest North America updates from the global tunnels industryLatest North America Update
Leadership vision for a path toward sustainability Shortly before his recent election as President of International Tunnelling and Underground Space Association (ITA-AITES), Prof Arnold Dix, a global expert in tunnel sector contractual arrangements, told T&T about his vision for how the international tunneling industry can accelerate its practical pursuit of sustainability – by being armed with new, tailored-made measurement tools and introducing a ‘non-dispute’ option in contract law
Tunneling under operating highways and railways: Part 1 Keivan Rafie and Gary Kramer of Hatch present the first of their two-part look at lessons in planning and constructing tunnel crossings with shallow cover under live transport corridors
Clean hat trick Nicholson Construction has had three contracts for Project Clean Lake in Ohio, and each has posed its challenges. Keren Fallwell reports
Update on Metro Projects in Europe and Asia R Pandita and M Rehbock-Sander (both of Amberg Engineering) presented this paper at WTC2020 Malaysia and describe selected aspects of European and Asian metro projects, including geotechnics, construction, safety, ventilation and risk
Nat – Back to Rock The biennial NAT tunneling conference will take place at the Philadelphia Marriott Downtown in Philadelphia, US on 19-22 June. Here follow a few tips to get the best out of the event
Inspired through meaning Keivan Rafie looks at why many engineers have recently joined the so-called ‘great resignation’ and suggests that something more than a pay cheque and stable job may be needed
A long line of success Dean Brox of Dean Brox Consulting reviews the benefits and successes associated with precast concrete tunnel linings when used for hydropower tunnels
TBM challenges on a demanding sea outfall Gary Peach, project manager and consultant with Mott MacDonald (Doha, Qatar) discusses the challenges and management deployed to overcome and successfully complete what has been hailed as the Middle East’s longest storm and groundwater tunnel
Under pressure Dr Donald Lamont and Roy Slocombe recently gave the British Tunnelling Society lecture on low, intermediate and high-pressure compressed air work, highlighting the launch of revised BTS CAWG guidance. Report by Dr Donald Lamont and Roy Slocombe
Tunnelers prepare for Nat in ‘Philly’ One of the two major biennial tunneling shows in the US, the North American Tunneling Conference in Philadelphia (NAT2022) is preparing to open its doors for the first time since 2018
Mitigating a water bearing fissure Emily Riley won the British Geotechnical Association’s (BGA) annual Cooling Prize competition for young professionals with her paper ‘The engineering mitigation of a water bearing fissure in the Chalk at the Tideway Deptford Church Street shaft’. It is reproduced here by kind permission of the BGA
3D parametric structural design and documentation workflow Jeff Fontana and Eric Westergren of McMillen Jacobs look back over the past 50 years and note that architecture, engineering and construction have gone through several advances in design development and documentation
An innovative tunnel and contracting model VTA is extending the BART transit system into Silicon Valley under a two-phased program. Phase 2, currently in design and engineering, features an innovative single-bore tunnel configuration. Report by the VTA’s BART Silicon Valley Phase II Team
Harding prize gains momentum for 2022 Young tunnel engineers can raise their profile and make their work visible to the civil engineering community by entering the Harding Prize, named after the founder chairman of the Society, Sir Harold Harding
Set in stone For centuries the home of quarrying and more recently mining of the eponymous stone, Portland, England could become home to an exciting new visitor attraction housed in a mine and demonstrating the potential of underground space. George Demetri reports
A challenge packed drive Erez Allouche, Matthew Devitt and Tyler Horton of Stantec Consulting, and Keivan Rafie of Hatch (Vancouver) discuss the relocation of a gas pipeline microtunneled through complex soils and beneath twin railroads, a river and multiple utility lines
Digging the deal on infrastructure George Demetri takes a look at the state of US infrastructure, the possible causes of its lacklustre performance and how it may be improved, taking in along the way the views of some high-profile engineers and consultants
Defying the quakes Reconstructing an existing dam and building new intakes, outtakes and spillway form part of an ambitious 10-year programme in the drought-hit and earthquake-prone Santa Clara Valley, California. George Demetri reports
The doors to success Bernd Hagenah, Sean Cassady, Jesse Harder and Ana Ruiz-Jimenez of HNTB Corp discuss the benefits of and considerations for the implementation of platform edge doors in modern underground transit and metro rail systems
