When stuck between a rock and a hard place, I was determined to come up with a solution to penetrate very coarse alluvial gravels, where traditional split spoon and Shelby-tube sampling methods could not.
John A. “Jack” Hayes, PE, D.I.C. is a widely recognized authority on Osterberg cell (O-cell) testing, a method of evaluating the integrity of drilled piles. We spoke to Hayes at this year’s Osterberg Memorial Lecture at the International Foundations Congress and Equipment Expo (IFCEE).
The success and longevity of local drilling companies is a sustainability issue of its own and, while many factors contribute to the success of a business, it’s worth seriously considering the financial aspects that have historically led to profitability and growth for contracting firms.
Hillside homes and structures have presented a particular challenge for some of our customers. Accessing the ideal location on the steep slope with equipment that’s powerful enough to complete the task can be problematic enough, and, for contractors who prefer to own their equipment and complete this type of work in-house, affordable options are even more difficult to come by.
The navigational lock system for the dam, built during the New Deal civil construction boom of the later 1930s and early ’40s, accommodates 600-foot barges. Drillers are helping the U.S. Army Corps of Engineers open up that bottleneck to barges twice that size.
PVC casing is inexpensive, reliable, never rusts and, used within limits, will make a lifetime well. However, PVC has one major drawback: It is not as strong as steel pipe.
We recently got the results back from our latest email survey, and we found that more than six in 10 contracting firms either strongly agree or agree that the shortage of good help has limited the amount of work they can take on.
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