Inside the Devil's Slide tunnel construction, by kxyoung on Flickr
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Devil’s Slide Tunnel Project Nearly Complete

Inside the Devil's Slide tunnel construction, by kxyoung on FlickrThe Devil’s Slide Tunnel Project was originally scheduled to open at the end of 2012, but it has been delayed slightly to an early 2013 opening. If you look at some recent photos, you can hardly tell that there is anything left to finish. I’ve been following this project since it started, since to me it represents the essence of geoengineering, with important roles played by geotechnical engineers, geological engineers, hydrogeologists, and of course geotechnical contractors and tunneling specialists.  I thought it would be interesting to list a few of the posts I’ve written about the project over the years and present a bit of information I only recently learned.  Click through for more. [Image: kxyoung on Flickr]

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Four 150-tonne working load capacity Groundforce MP150 struts brace the sheet pile and secant pile retaining walls for a basement excavation in West London
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Huge struts used to prop London excavation

Groundforce supplied ten hydraulic struts to support the excavation at a commercial development known as Merchant Square in West London. Six of the struts were the monsters pictured, 500 tonne (1,100 kip) capacity, 49 m […]