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Sinkhole in a Beijing Street on April 26, 2011 - possibly resulting from tunneling ground loss from Beijing subway construction
Failures

Tunneling ground loss sinkhole opens in Beijing street, swallows truck

June 6, 2011 rockman Failures Comments Off on Tunneling ground loss sinkhole opens in Beijing street, swallows truck

On April 26, a sinkhole opened up in a busy Beijing street in China’s capital city, swallowing up a truck. According to news reports, the driver and passenger jumped out of the vehicle before it […]

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Rockman's Ramblings

Retraction and Apology – Drilling Accident in Ontario Canada

October 30, 2008 rockman Rockman's Ramblings Comments Off on Retraction and Apology – Drilling Accident in Ontario Canada

Yesterday I received a forwarded email from a fellow geotechnical engineer and former coworker regarding a fatal accident involving a hollow stem auger drill rig in the Lindsay area of Ontario Canada on October 8th. […]

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Miscellaneous

NASSPA Website Has New FAQ on Steel Sheet Piles

November 25, 2009 rockman Miscellaneous Comments Off on NASSPA Website Has New FAQ on Steel Sheet Piles

The North American Steel Sheet Piling Association (NASSPA) recently posted a FAQ on steel sheet piles to their website. A few example questions: What is steel sheet piling? What are the advantages of hot-rolled sheet […]