Latest from Tunnels and Tunnelling
Keep moving
Nicole Robison and Paola De Pascali look at innovative ways to bring equipment and materials from the factory floor to the bottom of the tunnel shaft
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One big bore
Rail projects across North America are considering single tunnel drives, Nicole Robinson reports
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Changing safety culture
Leah Jacobs looks at her own contribution to the Waterview Connection project in New Zealand
Read moreLATEST NEWS
Hungarian government issues decrees for new tunnels in Budapest
Hungary – Proposals for new underground infrastructure in Budapest have been accepted for more study according to documents released on November 10 by Magyar Közlöny (Hungarian Gazette), which documents the official text of any newly issued piece or amendment to Hungarian legislation.
Hungary – Proposals for new underground infrastructure in Budapest have been accepted for more study according to documents released on November 10 by Magyar Közlöny (Hungarian Gazette), which documents the official text of any newly issued piece or amendment to Hungarian legislation.
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Osha announces crane operator final rule
USA – The U.S. Department of Labor’s Occupational Safety and Health Administration (Osha) published a final rule November 7 that clarifies certification requirements for crane operators, and maintains the employer’s duty to ensure that crane operators can safely operate the equipment.
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California votes to retain transportation fees designated for road repairs
US – The midterm elections saw California voters defeat ballot measure Proposition 6, which would repeal the 2017 transportation laws taxes and fees designated for road repairs and public transportation. The fiscal impact concerns ongoing revenues of USD 5.1bn from state fuel and vehicle taxes that mainly would have paid for highway and road maintenance and repairs, as well as transit programs.
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PJA appoints Jim Kirby as chair
Great Britain – Jim Kirby is the new chair of the Pipe Jacking Association (PJA). Appointed at the association’s AGM on 17 October, Kirby is the first consulting engineer in the 45-year history of the PJA to hold the position.
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Aecon/Traylor to build Second Narrows Tunnel
Canada – Aecon Group announced November 1 that a joint venture between Aecon (40 per cent) and Traylor Bros Inc. (60 per cent) has been awarded a CAD 267M (USD 203M) contract by Metro Vancouver (Greater Vancouver Water District) for the Second Narrows Water Supply Tunnel project in British Columbia.
LATEST FEATURES
Rules of Thumb: Auger boring
Tackling various ground conditions and often offering comparably lower costs than other trenchless methods, columnist Keivan Rafie explains considerations for auger boring
Tackling various ground conditions and often offering comparably lower costs than other trenchless methods, columnist Keivan Rafie explains considerations for auger boring
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A word to the wise
Mark Knight, associate professor at the Department of Civil and Environmental Engineering and executive director of CATT, at at the University of Waterloo, reviews geotechnical considerations for new trenchless construction projects.
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Interface
Greg Austin, marketing director, and Xia Cao, principal scientist, of GCP Applied Technologies discuss using waterproofing with shotcrete in underground construction
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Concrete evidence
T&T looks at developments in concrete and related materials
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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
LATEST Blogs
Half a Degree
As T&T went to press the Intergovernmental Panel on Climate Change (IPCC), the UN body for assessing the science related to climate change, announced that limiting global warming to 1.5°C compared to 2°C would provide clear benefits to people and natural ecosystems, and goes hand in hand with ensuring a more sustainable and equitable society.
As T&T went to press the Intergovernmental Panel on Climate Change (IPCC), the UN body for assessing the science related to climate change, announced that limiting global warming to 1.5°C compared to 2°C would provide clear benefits to people and natural ecosystems, and goes hand in hand with ensuring a more sustainable and equitable society.
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Science of the small
It has been a while since I wrote about tunnelling efforts to further humanity’s understanding of particle physics.
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Welsh fairy tale
Fairy tales: we all remember our favourites. Steve Mackey, chair of the Rhondda Tunnel Society may well be living his own.
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Tap in to the public mood
Growing up in southern Italy, I spent most of my days during the hot summers in an olive tree in my garden. This hundred-year-old tree kept all of my secrets and protected the little girl who wanted to explore new cities all over the world. I still love my home, Nardò, situated in Puglia (the heel of Italy’s boot) but as an adult I left my olive tree to work in London.
