North America - Page 1Stay up to date with the latest North America updates from the global tunnels industry
Latest North America Update
In demand in Montreal A local building boom has affected the supply of shotcrete to contractors across the tunnelling and wider construction industry. Liam Ireland, technical sales engineer, King Packaged Materials Company, reports
Navigating live tunnel connections Connecting the Des Plaines Tunnel System to the McCook Reservoir is one of the latest – and more challenging – components of TARP. Report by Cary Hirner and Faruk Oksuz of Black & Veatch, and Carmen Scalise of the Metropolitan Water Reclamation District of Greater Chicago
The China experience Chinese industrial leaders outlined their hopes for growth in construction equipment exports at Bauma this spring. The underground market is a key target for these suppliers, but the process of going abroad has not been without challenges, even with an enormous push from Beijing to finance foreign infrastructure, Alex Conacher reports
ICUEE 2019 Held every two years, the International Construction and Utility Equipment Exposition is the utility industry’s largest show with more than 850 exhibitors
Momentum The City of Los Angeles has seen several milestones this summer for its Purple Line extension, Nicole Robinson reports on the progress for each phase
TAC 2019 This year’s workshop focuses on the use of tunnelling technologies and underground space for stormwater and flood control
Slurry TBMs Slurry TBMS are considered “SOFT ground” tunnel boring machines (along with earth pressure balance TBMs), which use pressurised slurry in the excavation chamber to balance the groundwater and soil pressure.
Stay connected Guido Perez Manfredini, regional commercial manager, MST Global, discusses unified communication and data networking for tunnels
Northern exposure A round-up of tunnel work in the Nordic Forum
Horizontal Directional Drilling (HDD) Includes: Q&A with Ali Asadi (M.Eng Candidate from Concordia University’s Department of Building, Civil and Environmental Engineering)
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.
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.