CONTENTS FEATURES Departments PRESIDENT’S MESSAGE Look Ahead! ...........................................7 EXECUTIVE DIRECTOR UPDATE Charity, Volunteerism and Working Together .................................................9 42 Annual Conference wrap-up; Board of Trustees meeting; a recap of summer events; and updates on upcoming events including IFCEE 2018, DFI-EFFC DFI ACTIVITIES nd the DFI 43 Annual Conference; and much more. .. .................................................23 International Conference, SuperPile ’18, rd REGIONAL REPORT DFI Middle East . . . . . . . . . . . . . . . . . 65 EDUCATIONAL TRUST REPORT A farewell message from Chair Byrl Williams and updates on several events including the NJ Golf Outing, Wysockey Fundraising Cruise and the Manual Fine Scholarship Fundraising Dinner.. . . . . 67 TECHNICAL ACTIVITIES UPDATE A status update on all of DFI’s technical committees and working groups .........109 BENEATH THE SURFACE Retirement Can Be Scary or Joyful, Your Choice................................................117 LEGALLY SPEAKING Construction Dispute Resolution Comes Out of the Stone Age ..........................121 DFI PEOPLE AND COMPANIES News about People, Companies and Products .............................................125 CALENDAR & AD INDEX.................142 8000 Pile Damage Likely 7000 6000 5000 API 4000 DEEP FOUNDATIONS The Magazine of the Deep Foundations Institute (DFI) is published bimonthly by DFI. 326 Lafayette Avenue Hawthorne, NJ 07506 USA T: (973) 423-4030 | F: (973) 423-4031 Email: [email protected] 3000 AREMA 2000 1000 0 0 10 20 30 40 50 60 D/t (mm/mm) 70 80 90 100 Hammer Too Small Low Risk CFEM Moderate Risk 101 Screening Tool for Impact Hammer Selection David Tara, P.Eng. and Gerald Verbeek Five criteria are presented that were used in the development of a screening tool and assessment charts that can be used when selecting an impact hammer for driving piles. The goals of using the proposed approach are to select the appropriate impact hammer to drive an open toe steel pipe or H pile, and to then use the model for the subsequent high strain dynamic testing. DEEP FOUNDATIONS • NOV/DEC 2017 • 5 85 How Well do Helical Piles Resist Earthquakes as Foundation Systems? (Where do we go from here?) Dr. Amy B. Cerato, P.E., Tatiana Vargas, and Shawn Allred The authors present an overview of the development and acceptance of helical piles in the U.S. marketplace, the instal- lation process, and examples of their behavior due to seismic excitation. Large- scale shake table testing performed on helical piles installed in dense sand at the University of California San Diego is described. Recommendations for future research efforts are provided by the authors. 93 Foundation Stabilization of the Morris Island Lighthouse William L. Snow, Sr., William B. Wright, Sr., P.E., and William L. Snow, Jr., P.E. The beach surrounding the lighthouse, about 1,200 ft (365 m) from the shoreline, was eroded away leaving the wooden piles supporting the structure exposed to salt water and wood eating parasites. The authors describe the exploratory process, design and challenges with the installation and testing of hollow bar micropiles used to preserve the remotely located lighthouse. API (610mm) Wr·He/As (kJ/m2) API (3048mm)
