DFI Technical Committee Chairs Augered Cast-in-Place Pile Mike Moran, Cajun Deep Foundations, LLC [email protected] Codes and Standards Thomas Gurtowski, Shannon & Wilson, Inc. [email protected] Deep Foundations for Landslides/Slope Stabilization Prof. J. Erik Loehr, University of Missouri-Columbia [email protected] Drilled Shafts Paul Axtell, Dan Brown and Associates [email protected] Driven Pile Clayton Signor, TX Pile LLC [email protected] Ground Improvement Marty Taube, Menard [email protected] Helical Piles and Tiebacks Gary Seider Chance Hubbell Power Systems, Inc. [email protected] Marine Foundations Rick Ellman Mueser Rutledge Consulting Engineers [email protected] Micropiles Jonathan Bennett Brayman Construction Corporation [email protected] Seismic and Lateral Loads Kwabena Ofori-Awuah KCI Technologies, Inc. [email protected] Slurry Walls Nicolas Willig, Case Foundations [email protected] Soil Mixing Dennis Boehm, Hayward Baker, Inc. [email protected] Sustainability Marine Lasne, Soletanche Freyssinet [email protected] Testing and Evaluation Don Robertson, Applied Foundation Testing [email protected] Tiebacks and Soil Nailing Ed Laczynski, G.A. & F.C. Wagman, Inc. [email protected] 74 • DEEP FOUNDATIONS • NOV/DEC 2013 Technical Seminars and Workshops Several committees are planning seminars in 2014; the first being a joint ADSC-DFI seminar on anchored earth retention systems and micropiles. This seminar is being organized by the ADSC-DFI Micropile Committee, DFI Tiebacks and Soil Nailing Committee, and ADSC Anchored Earth Retention Committee on March 19-20, 2014 at the Hilton Seattle Airport & Conference Center in Seattle, Wash. Other committees planning seminars for 2014 include Seismic and Lateral Loads, Landslides/Slope Stabilization together with Tiebacks and Soil Nailing, Helical Piles and Tiebacks, Drilled Shafts, Ground Improvement (possibly with the Geo-Institute Soil Improvement Commi- ttee) and Slurry Walls. More information on timing and locations will be available on www.dfi.org as plans develop. The next joint seminar of the ADSC and DFI Drilled Shafts Committees is scheduled for May 2014 in Charlotte, N.C. ADSC is taking the lead on organizing this event in the series of jointly-organized seminars. The Marine Foundations Committee is preparing a technical session at the Offshore Technology Conference May 5-8, 2014 in Houston, Texas titled, “Geotech- nical Technology Transfer from Onshore and Near-Shore Practices.” The International Society for Micropiles (ISM) and the joint ADSC-DFI Micropile Committee are organizing the 12th ISM Workshop on Micropiles in Krakow, Poland, June 11-14, 2014. A one-day short course will be presented by ISM, ADSC and DFI members, followed by a 2.5-day work- shop. For more information see page 29. DFI Europe has developed a Moni- toring Committee to advance the practice and use of geotechnical instrumentation. The committee has held several meetings in Europe and plans to develop a state-of- practice paper on codes affecting instrumentation practices. DFI Middle East has been meeting to develop guidelines for good practices for site dewatering in deep excavations. The construction of high-rise towers and the demand for more parking are driving the construction of deeper basements, com- monly four to seven stories below ground. Committee Project Fund Update DFI has provided more than $250,000 in funding over the past two years to advance committee projects. Researchers held project status meetings at the annual conference to update members on progress and solicit guidance and input. Professor Anne Lemnitzer of University of California, Irvine provided an overview of the online database of load tests she and her graduate students are developing. The Drilled Shafts and Seismic and Lateral Loads Committees jointly endorsed the project and are providing guidance. The database will be available through DFI website in 2014. Dr. John Turner and Ben Turner of Dan Brown & Associates, Inc., reviewed the status of their project aimed at assessing the validity of the 80% free length acceptance criterion for long tiebacks and anchors. Members of the DFI Tiebacks and Soil Nailing Committee endorsed this project and are supporting its progress by contributing performance test data on long free length anchors. Professor Armin Stuedlein from Oregon State University presented an update on his progress to conduct an independent review and analysis of available pile design information, load testing results, and associated pile construction costs to quantify the level of over-conservatism that results from inappropriate acceptance criteria com- monly included in building codes. Professor Sam Clemence of Syracuse University and Professor Alan Lutenegger of University of Massachusetts, Amherst, completed their survey of practices for helical piles and anchors. Over 200 practitioners responded to the survey, and the researchers are currently writing a state-of-practice paper covering the use of helical piles worldwide. Representatives from North America and Europe gathered to discuss the Drilled Shafts Committee’s funded project aimed at comparing and contrasting differences in bored piles/drilled shaft practices in North America and Europe. James Johnson of Condon Johnson and Associates and Alan Macnab of Macnab Consultants are spearheading the project in cooperation
