DFI Technical Committee Chairs Augered Cast-in-Place Pile Mike Moran, Cajun Deep Foundations, LLC [email protected] Codes and Standards Lori Simpson, Langan Treadwell Rollo [email protected] Deep Foundations for Landslides/Slope Stabilization Prof. Vern Shaefer, Iowa State University [email protected] Drilled Shafts Paul Axtell, Dan Brown and Associates [email protected] Driven Pile Andrew Verity, Terracon [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 Steve Davidow, Crux Subsurface, Inc. [email protected] Seismic and Lateral Loads Kwabena Ofori-Awuah KCI Technologies, Inc. [email protected] Slurry Walls Giovanni Bonita, GEI Consultants [email protected] Soil Mixing Dennis Boehm, Hayward Baker, Inc. [email protected] Subsurface Characterization for Deep Foundations Trustee Liaison: Bernie Hertlein, GEI Consultants [email protected] Sustainability Carlos Englert, Schnabel Engineering [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 • JAN/FEB 2015 underground structures, retaining systems, ground improvement, geological and geo- physical investigations, and deep founda- tions. He received an M.S. and Ph.D. in civil engineering from Virginia Tech, an M.S. in hydrogeology from the University of Kentucky, and a B.A. in geology from Franklin and Marshall College. Bonita is experienced in geotechnical and geostructural engineering, support of excavations systems, movement of adjacent structures, ground improve- ment, hydrogeology, geophysics, karst geology and geologic mapping. He has extensive expertise with both temporary and permanent slurry, secant, soldier pile and lagging, soil mix and soil nail walls for historic buildings, structures with deep foundations, transit systems, tunnels, dams and tall buildings. He has used traditional and advanced analytical techniques to recom- mend and design excavation and ground improvement methods and foundation systems for major high-profile public works projects with difficult engineering chal- lenges. Bonita is an adjunct faculty member in the Civil Engineering Department at Catholic University in Washington D.C. COMMITTEE CHAIR ED LACZYNSKI Tiebacks and Soil Nailing Committee The DFI Tiebacks and Soil Nailing Commit- tee had a successful joint seminar with the Landslides and Slope Stabilization Commit- tee in Pittsburgh this August, and there are future collaborations planned for the two committees. FHWA issued the new draft of Geotechnical Engineering Circular 7 (GEC 7) for the committee’s review. The committee, collectively with ADSC’s Anchored Earth Retention Committee (AER) and ASCE’s Earth Retaining Structures Committee, returned a response to the GEC 7 draft. We appreciate all who participated in the review and look forward to the completed GEC 7, which will be issued in early 2015. At the DFI Annual Conference, the Tiebacks and Soil Nailing Committee had another great forum to meet and discuss the industry’s activities in person. Ben Turner presented the research on the 80% unbonded length criterion as it pertains to the performance of 100 ft (30.5 m) long and greater tieback anchors developed by John and Ben Turner — funded by DFI through the committee. The final report will be posted on the Tie- backs and Soil Nailing Committee page of the DFI website at www.dfi.org. Currently, the committee is engaged in several topics of significance including further work on anchor corrosion and acceptable protection and evaluating safety in our industry’s operations. The commit- tee will explore these and other topics for future committee research. Upcoming semi- nars include a seminar with the joint DFI and ADSC Micropile Committee and ADSC’s AER next year and a possible joint seminar with DFI’s Landslides and Slope Stabilization Committee in August 2016. The committee will continue holding monthly conference calls when feasible and plans to meet at IFCEE 2015 in March. ADSC-DFI Joint Micropile Committee Steve Davidow, P.E., S.E., vice president, Crux Subsurface, Inc., took over as chair of the joint Micropile Committee. Davidow has over 15 years of experience as a structural engineer, working on projects around the world. He is licensed as a civil and structural engineer in 40 states and serves as engineer of record for all design- build activities performed by Crux Subsurface. He obtained his B.S. and M.S. degrees in civil engineering from Washington State University. Davidow is an expert in commercial structure and deep foundation design, and is heavily involved in the electrical transmission and distribution industry. Davidow also co-chairs the DFI Electric Power Systems Foundation Working Group, with Peter Kandaris, office manager, DiGioia Gray & Associates.
