Winning project is 181 Fremont Tower, a mixed-use high-rise.

Between conventional mud drilling and straight air drilling, there is another method that is well adapted to many parts of the country: reverse circulation drilling.

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).

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.

New rig designed for maximum operator comfort, complete control of operations.

Down-the-hole hammer manufacturer to showcase products, demos.

Event is one of the largest construction trade shows in the world.