CONTENTS FEATURES Departments PRESIDENT’S MESSAGE Finding Common Ground and the 2017 New Administration! . . . . . . . . . . . . . . . 7 EXECUTIVE DIRECTOR UPDATE Bright Outlook for the Industry and DFI . . . . . . . . . . . . . . . . . . . . . . . . . 9 DFI ACTIVITIES PFSF Conference in Australia, the 13 Recaps of recent events; news on the DFI- th SuperPile ’17, the 42 Annual Conference on Deep Foundations and 2018 events; updates on the DFI Journal and the 2017 DFI Awards. .. . . . . . . . . . . . . . . . . . . . 19 International Workshop on Micropiles, nd REGIONAL REPORT DFI Middle East. . . . . . . . . . . . . . . . . . 57 EDUCATIONAL TRUST REPORT An update on the Gala Fundraising Dinner and Giving Tuesday, announcement of a new trustee and more . . . . . . . . . . . . . 61 TECHNICAL ACTIVITIES UPDATE New committee chairs and president’s award winners . . . . . . . . . . . . . . . . . . 95 BENEATH THE SURFACE Let’s Talk Space, Office That Is. . . . . . . 99 LEGALLY SPEAKING Recovering Attorney Fees for Changes on Government Contracts . . . . . . . . . . . 103 DFI PEOPLE AND COMPANIES News about people, companies and products . . . . . . . . . . . . . . . . . . . . . . 105 CALENDAR & AD INDEX . . . . . . . . 114 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] 91 Trevi Improves the Lungarno Torrigiani Embankment in Florence Trevi completed the first phase of a project aimed at ensuring the safety of the embankment along Lungarno Torrigiani, Florence. On May 24, the embankment underwent a structural collapse causing a displacement of the riverbank about 10 ft (3 m) toward the Arno River. To avoid any risk of possible river flooding, it was essential to complete the ground improvement, structural restoration, and hydraulic protection before winter. DEEP FOUNDATIONS • JAN/FEB 2017 • 5 85 Virginia Route 340 Bridges: Challenges in Karst Terrain James Sheahan, P.E., Michael Mo, P.E. and Chaz Weaver, P.E. The Virginia Department of Transportation (VDOT) undertook a program to replace four bridges along approximately 4 mi (6.4 km) of US 340 in Northwest Virginia. Two of these bridges, which span Compton Creek and the Norfolk Southern Railroad, are the subject of this article. HDR provided roadway and structural design as well as geotechnical engineering services on the Norfolk Southern Bridge while subconsultant, Saeed Associates, provided structural engineering services for the Compton Creek Bridge. 77 Pile Setup on Driven Friction Piles Sebastian Lobo-Guerrero, Ph.D., P.E., Daniel Martt, P.G., Todd DeMico, E.I.T. Friction piles in fine-grained soils will often regain capacity with time; thus, the design capacity (with depth) is likely to be more representative of the redrive value rather than the capacity during the initial drive. The authors’ experience with driving friction piles in Northwestern Pennsylvania has helped to better understand and estimate locations in which pile setup is more prevalent. Identifying the potential for pile setup during design reduces the risk of unexpected pile driving results during construction.
