• Held a topical seminar with the Tiebacks and Soil Nailing Committee in Denver, Colo., August 2016 titled S3: Slopes, Slides and Stabilization. Next seminar is planned for Washington D.C. in August 2017. • Conducting a study to compare limit equilibrium and advanced numerical methods for slopes reinforced with stabilizing piles. • Preparing a literature study and modeling to compare strain wedge and GROUP procedures to define simpli- fied analytical steps for A-Wall systems. Drilled Shaft Committee Chair: Paul Axtell, P.E., D. GE, Dan Brown and Associates, [email protected] Trustee Liaison: James Johnson, Condon Johnson and Associates, [email protected] • Organized an outreach effort for the foundations industry at the Interna- tional Bridge Conference in June 2016, including a special session on foundations and a dedicated exhibit hall area. They are continuing this effort for the 2017 conference, June 4- 8, 2017, in National Harbor, Md. • Prepared an October 2015 workshop for engineers, contractors and FHWA to develop a roadmap for quality assurance, acceptance and contractual obligations for post grouting of drilled shafts. The workshop report is currently available for free download from the DFI home page. • Collaborating on a co-funded study with the European Federation of Foundation Contractors (EFFC) to develop a guide to improve tremie concreting and testing practices for deep foundations (drilled shafts and slurry walls). The first edition report, Driven Pile Committee Chair: Ben Vance, P.E., STRATA, [email protected] (Immediate Past Chair: Andrew Verity, Terracon, [email protected]) Trustee Liaison: David Borger, P.E., Skyline Steel, [email protected] • Updating the 1998 Driven Pile Manual to provide an online list of driven pile geometries and section properties. • Leading the organizing committee for SuperPile ’17 (Coronado Bay, Calif., June 14-16). • Reviewing the Timber Piling Council’s updated Timber Pile Design and Construction Manual. • Exploring the development of a pile driving app. Helical Piles and Tiebacks Committee Chair: Gary Seider, P.E., Hubbell Power Systems/Chance, [email protected] Trustee Liaison: Alan Roach, Berkel and Company Contractors, [email protected] • Prepared a state of practice study on helical piles (Researchers: Profs. Alan Lutenegger, University of Massachu- setts and Sam Clemence, Syracuse University) published in the 2015 DFI Journal Vol. 9 No. 1. • Published standard specifications for helical anchors and compression piles, available for purchase on DFI website. • Developing standard specifications for helical soil nails. • Developing a committee-endorsed engineering instruction/training program for helical designers. • Organizing annual topical seminars. • Developing a helical pile design guide. Ground Improvement Committee Chair: Tanner Blackburn, Ph.D., P.E., Hayward Baker, [email protected] Trustee Liaison: Marty Taube, P.E., P.G., Menard USA, [email protected] • Providing guidance for the development of new ground improvement specifications by 112 • DEEP FOUNDATIONS • NOV/DEC 2016 • Conducting Helical Seismic Research Study including literature review, laboratory and model testing and full- scale field testing (Researcher: Prof. Amy Cerato, P.E., University of Oklahoma). • Working on two draft ASTM Standards – one for helical pile testing and another for installation/testing. titled EFFC/DFI Best Practice Guide to Tremie Concrete for Deep Foundations (2016), is available for free download from the DFI website. • Collaborating on a co-funded study with the DFI Seismic and Lateral Loads Committee and ADSC to evaluate the shear demand in drilled shaft rock sockets through the DFI Committee Project Fund. continued dissemination of Guide to Developing Performance Specifications for Ground Improvement, published in the Mar/Apr 2016 issue of Deep Foundations. • Creating and maintaining a ground improvement presentation and speaker information database.
