MARY ELLEN BRUCE LARGE, P.E., D.GE, DIRECTOR OF TECHNICAL ACTIVITIES TECHNICAL ACTIVITIES DFI Technical Committees and Working Groups – Always Something New Happening DFI’s technical committees held their annual committee meetings at rd the DFI 43 Annual Conference on Deep Foundations in Anaheim, Calif., in October. Two new DFI Committees (Tunneling and Under- ground Systems Committee and Project Information Management Systems Committee) held their first meetings, and two potential new committees (International Grouting and Risk) also held exploratory meetings. Industry-wide working groups on working platforms and DFI-ADSC Anchored Earth Retention Committee Co-Chairs: Ed Laczynski, P.E., Wagman, [email protected] Jeff Segar, P.E., S.E., Braun Intertec, [email protected] Trustee Liaison: Tom Richards, P.E., D.GE, Nicholson Construction, [email protected] • Established a joint committee with ADSC’s Anchored Earth Retention committee. • Co-organizing S3: Slope-Support-Stabilization Seminar including a software symposium, August 6-8, 2019, Minneapolis, Minn. • Reviewing AASHTO soil nail specification. • Finalizing epoxy coating performance report. • Developing temporary soil nailing guidance. • Reviewing hollow bar anchor specification for FHWA. • Conducting a review of geotechnical information that is typically required for anchored systems and how additional information/advanced methods could improve uncertainty. • Conducting a research study on the impacts of metal creep in large diameter tendons. Augered Cast-in-Place Pile and Drilled Displacement Pile Committee Chair: Jonathan Huff, P.E., Richard Goettle, [email protected] Trustee Liaison: Matthew Meyer, P.E., Langan Engineering and Environmental Services, [email protected] Incoming Trustee Liaison (2019): Morgan NeSmith, P.E., Berkel and Company Contractors, [email protected] • Organized ACIP and Drilled Displacement (DD) Pile seminar in April 2018 in Baltimore, Md. • Completed report for 2016 research project in conjunction with Florida DOT regarding the installation, monitoring, testing and performance of ACIP piles for inclusion in Florida DOT specifications. Dr. Gray Mullins from the University of South Florida conducted additional studies on thermal integrity profiling (TIP) in ACIP Piles. Free download from DFI website. Ed Laczynski Jeff Segar Tom Richards risk also held meetings. Hundreds of DFI committee and working group members gathered to discuss the many and varied projects aimed at furthering the advancement and understanding of deep foundations. Successes were praised, and new challenges were proposed to meet the needs of the industry. Please see the bulleted lists below of committee activities and projects, and join a technical committee to become more involved. Jonathan Huff Matthew Meyer Morgan NeSmith • Reviewed and commented on ACIP Pile specifications for NAVFAC and Florida DOT (ongoing). • Developing proposed specification for ACIP piles for AASHTO. • Conducting a research project in conjunction with Drs. Antonio Marinucci and Anne Lemnitzer at UC Irvine regarding the lateral forces generated during DD pile installation (i.e., effects of installation on existing foundations, tunnels, retaining walls, utilities, etc.). • Collecting TIP readings and manual measurements of pile circumference for 2018 research. Committee members are installing TIP wires in ACIP test piles and recording and submitting readings and pile installation records. Piles are then excavated and/or extracted for manual measurement of pile circumference. Goal is to build a database to help refine interpretation of TIP results. DEEP FOUNDATIONS • NOV/DEC 2018 • 107
