CONTENTS FEATURES Departments PRESIDENT’S MESSAGE A Busy DFI . . . . . . . . . . . . . . . . . . . . . . 7 EXECUTIVE DIRECTOR UPDATE Rewarding Awards. . . . . . . . . . . . . . . . . 9 DFI ACTIVITIES OPA winner announced; recap of Helical 44 Annual Conference, Shotcrete Short Course, DFI-India Conference and 2020 events; new Helical Design Guide released, and more. . . . . . . . . . . . . . . . . . . . . . . 23 Tradeshow and Seminar; updates on DFI’s th REGIONAL REPORT DFI of India. . . . . . . . . . . . . . . . . . . . . 59 EDUCATIONAL TRUST REPORT Message from chair, scholarship awardees, 2019 Trust events and recent donors. . . . . . . . . . . . . . . . . . . . . . . . . 63 DONOR PROFILE Larry P. Rayburn, P.E., Goettle. . . . . . . 65 TECHNICAL ACTIVITIES UPDATE Reports from the Codes and Standards, Soil Mixing and Seepage Control Committees. . . . . . . . . . . . . . . . . . . . . 67 GUEST EDITORIAL Nonprofit Profits – The Value of Professional Societies . . . . . . . . . . . . . . 99 LEGALLY SPEAKING Shopped, Chopped and Peddled — The Law Affords Few Protections to Subcontractors Against Unethical Contractor Bidding Practices . . . . . . . 103 DFI PEOPLE AND COMPANIES News about people, companies and products . . . . . . . . . . . . . . . . . . . . . . 107 CALENDAR & AD INDEX . . . . . . . . 118 75 Performance and Analysis of a Braced Secant Pile Wall James D. Maniscalco, P.E. and Evangelia S. Ieronymaki, Ph.D. This article summarizes the construction and performance of a braced secant pile wall that served as the support of excavation during construction of two below-grade basement levels for a multistory building in NYC. An adjacent 25-story residential building provided a challenge during the installation of the west secant wall. A comparison of inclinometer measurements to 2D FE analysis predictions is also presented. 83 DFI Panel Discusses Challenges Facing Deep Foundations for U.S. Power Grid The discussion of a panel session titled Foundations that occurred during the DFI 43 Annual Conference on Deep Foundations in Anaheim, Calif., in October 2018 is summarized. The discussion highlighted the potential and realized deficiencies in the design, research and construction of electric power system foundations by different stakeholders associated with these deep foundations projects. Shortcomings in the Design of Electric System rd 91 Drilled Shafts: Reinforcement, Cover, Centralizers and Specifications John B. Turner, P.E., Walter Scarborough, F.CSI, SCIP, and Bradford Russell, AIA, P.E., SECB, F.SEI 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] The authors discuss the importance of concrete cover around reinforcement bars, as well as requirements for attaching spacers/centralizers to the reinforcing cage, as specified in different codes and standards. Quality and good specifications on construction projects are highlighted in the article through the use of a mini- case history. DEEP FOUNDATIONS • JULY/AUG 2019 • 5
