The construction of a 20-km tunnel that travels some 6,900-ft below ground has finally restarted after being broken down for several months after being damaged by a rock burst. The Los Olmos tunneling project will […]
The image of this failed bauxite tailings dam is very tragic and the pictures of the impact to the local town are very sad. But one thing that struck me about this particular image is […]
Basalt fiber reinforced polymer (BFRP) rebar has been installed in a bridge deck in Northern Ireland. It has twice the tensile strength of regular steel, and weighs approximately 75% less. According to the ENR article, […]
The City of Treasure Island, Florida (near Tampa) will be spending around $100k to repair approach embankments to the Isle of Capri and Isle of Palms bridges. …due to the degradation of seawalls and seals […]
Vertical environmental wells for monitoring or remediation of contaminated sites are fairly well known. But over the last 20-years or so, the technology for directional drilling for environmental remediation has existed but has been largely […]
September 29, 2010 — The Idaho Cleanup Project safely completed a remedial action five weeks ahead of schedule that protects the Snake River Plain Aquifer by grouting buried waste at the U.S. Department of Energy’s […]
Last month there were several updates to standards involving texting the flexural strength of concrete as well as updates to some masonry and dimension stone standards. ASTM D6926 – Standard Practice for Preparation of Bituminous Specimens Using Marshall Apparatus has been updated, so if you are involved in asphalt pavement testing, make sure you go and find out what the changes are. There are also a whole slew of groundwater and site investigation standards that were reapproved.
That’s my lame attempt at trying to coin a new geotechnical engineering catch phrase for “Karl Terzaghi’s Birthday.” Plus it tweeted better on Friday! Saturday, October 2 was the actual day. Every year my colleague […]
Water Use in Southwest Heads for a Day of Reckoning – Source: NYTimes.com via AGC SmartBrief Performance of Open-Graded Base Course: A Literature Search – Source: TRB Geotechnical, surveying systems improve mine safety – Source: […]
The “breakthrough” media event for CALTRANS’ Devil’s Slide Tunnel project was this past Friday. A large crowd of politicians, news crews and locals were on hand as a road-header broke through a shotcrete face in a ceremony to mark the completion of the excavation portion of the first of two tunnels. It will still be over a year until the tunnels are opened to traffic. The second tunnel is expected to breakthrough as early as this week. (Photo by SFGate.com)
Caltrans tunnel punch-through from Barry Parr on Vimeo.
The Video came from the Coastsider, the page also has comments from the videographer, Barry Parr, which offer a good perspective on the event.
Click on through for more links etc.
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