On May 15 a drilled shaft rig operated by Mid America Drilling Corp was nearly swallowed by the 9-ft diameter hole it was drilling for a cell tower foundation near Harlan, Iowa. Fortunately nobody was injured and the truck did not suffer any significant damage.
In Arizona, the standard of practice is to use a temporary surface casing to prevent dangerous failures like that. I once saw pictures of a drilling contractor superindendent almost get sucked into a collapsing shaft, even with the temporary casing. Pretty scary stuff. Source: Harlan Tribune. (Photo by Samantha Bruck)
Hawthorne, NJ (October 23, 2013): Four of the 15 DFI Technical Committees have new committee chairs. It is the role of the Technical Committees to focus on the unique issues of major methods and technologies within deep foundations and excavation, and to keep DFI members and the industry up to date with the state of practice through publications, guidance documents, peer-review of papers, educational events and committee reports in Deep Foundations magazine.
[Editor] Click through for the list of the new committee chairs. [/Editor]
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