• Working to connect technical committee members with technical members from DFI’s new Tunneling and Underground Systems Committee and tunneling societies (NATC, RETC). • Discussing specification for slurries for deep foundations. • Discussing participation in Working Platforms Industry-Wide Working Group. Soil Mixing Committee Chair: David Miller, P.E., ADM Consulting, [email protected] Trustee Liaison: Matthew Meyer, P.E., Langan Engineering and Environmental Services, [email protected] • Published research report, “Influences of Mixture Proportions and Test Conditions on the Strength and Stiffness of Wet- Mixed Soil and Cement,” by Roberto Nevárez-Garibaldi, Dale Miller, and George Filz, Virginia Tech. Funded through DFI Committee Project Fund. • Conducting research study on the effect of curing stresses on the mechanical properties of soil-cement mixed materials (George Onorato and Dr. Giovanni Bonita of GEI Consultants). Funded through DFI Committee Project Fund. • Creating a white paper on recommended QA/QC testing parameters and evaluation. • Helping plan 2020 Deep Mixing Conference in Gdansk, Poland. • Supporting S3: Slope-Support-Stabilization Seminar including a software symposium, August 6-8, 2019, Minneapolis, Minn. Subsurface Characterization for Deep Foundations Committee Chair: Victor Donald, P.E., Terracon, [email protected] Trustee Liaison: Conrad Felice, Ph.D., P.E., C.W. Felice, [email protected] • Planning activities to raise the level of awareness on the need for and economic benefits of accurate and effective subsurface characterization information. • Promoting active liaisons with AASHTO, ACI, ADSC, ASTM, FHWA, GeoProfessional Business Association (formerly ASFE), Geo-Institute, TRB and USACE. • Developing liaison with the DFI of India task force on geotechnical investigation. • Conducted industry survey of awareness and use of Geotechnical Baseline Report (278 responses). • Taking a leadership role by administering Geo-Industry Risk Working Group comprising DFT, ADSC, PDCA, GI and GBA. Testing and Evaluation Committee Chair: Gerald Verbeek, Allnamics Pile Testing Experts, [email protected] Trustee Liaison: Erik Loehr, Ph.D., P.E., University of Missouri Columbia, [email protected] • Conducting monthly meetings. • Continuing to prepare series of videos on foundation testing methods and data analysis for nonpractitioners. After the releases of the first video on static load testing, work has started on second video on high strain dynamic testing. • Preparing an overview of suggested use of instrumentation for various applications. The first module (urban excavations) is nearly complete, and work has started on the second module (slope stability). • Initiated the ITS Money (Increased Testing Saves Money) program with a first quarterly webinar tentatively scheduled for November 2018. • Reviewing terminology associated with crosshole sonic logging with publication of DFI consensus white paper. • Initiated a review of proper calibration methods for SPT equipment to ensure more representative N-values. • Ongoing liaison with ASTM, ACI, AASHTO, CGS, TRB, Geo- Institute and PDCA. David Miller Matthew Meyer Victor Donald Conrad Felice Gerald Verbeek Erik Loehr Sustainability Committee Trustee Liaison: Gianfranco Di Cicco, GDConsulting, [email protected] • This committee is charged with researching specifications and regulations related to sustainable practices. • Seeking a chair for this committee. 112 • DEEP FOUNDATIONS • NOV/DEC 2018
