The latest issue of Deep Foundations Magazine is available online from the Deep Foundations Institute (DFI). The September/October 2017 issue cover story is about the 2017 OPA Winning Project – The Expansion and Preservation of the Andrew Mellon Building in Washington D.C. This project involved adding a basement beneath the existing foundations of the National Historic Landmark. Berkel & Company Contractors designed micropiles to serve as the shoring system and the permanent deep foundation elements.
[Updated Thursday May 29, 2009 – 1:00 PM PDT] Added a photo of the AIS Kaiser S2 excavator (spider excavator), and added photos of the Devil’s Slide debris dump where they have put the landslide material removed and the material from the tunnel excavation. [/Update]
Grant Wilcox, Geology Branch Chief with CALTRANS Office of Geotechnical Design West gave a presentation on the Devil’s Slide repair along PCH Highway 1 at the Southwest Geotechnical Engineer’s Conference on May 12 in Phoenix. I’ve posted about the project here before. When I saw Mr. Wilcox, I knew he looked familiar but I couldn’t figure out why. At the beginning of his presentation he made light of his being on You-Tube…then it clicked! He gave a nice overview of the history of the failures, the geology, and the tunnel project. What follows are a few quick tidbits from his talk based on my notes. (Photo via Caltrans site).
Hawthorne, NJ (May 28, 2014): DFI announces the formation of a new, 16th technical committee focusing on site investigation for deep foundation design and construction.
The Subsurface Characterization for Deep Foundations Committee was formed to increase awareness of the importance of complete and competent site investigation in deep foundation practices. The specific goals of the committee will be defined by the committee members, however, initially the committee will discuss and define subsurface characterization needs from the point of view of the entire geotechnical/foundation industry. This will facilitate getting correct and comprehensive information to the end users (designers and contractors) and minimize change condition issues/debates. The committee will liaise with associated committees from other organizations and agencies to broaden the discussion within the engineering community. The objective is to find the common ground that allows the entire geotechnical industry and all project participants to minimize disagreement during construction, align expectations, and improve communication and understanding among related parties.
[Editor] Click through for the rest of the press release and to find out how to get involved with this new DFI committee. [/Editor]