CONTENTS FEATURES I DFI Graphic Design Faye Klein DFI Executive Committee President Dan Brown, Ph.D., P.E., D.GE Vice President Matthew Janes, P.Eng. Secretary Gianfranco Di Cicco Treasurer Michael H. Wysockey, Ph.D., P.E. Past President John R. Wolosick, P.E., D.GE Other Trustees Conrad Felice, Ph.D., P.E. Frank Haehnig Gerry Houlahan, P.E. James O. Johnson Mike Kelley K.S. Rama Krishna, Ph.D. Anne Lemnitzer, Ph.D., P.E. J. Erik Loehr, Ph.D., P.E. Matthew E. Meyer, P.E. David Paul, P.E. Howard Perko, Ph.D., P.E. Thomas D. Richards, P.E., D.GE Alan Roach Lori Simpson, P.E., G.E. Martin G. Taube , P.E., P.G. Stefano Valagussa 87 Use of the Expander Body with Fill Displacement Piles in Medium-Dense Sandy Soils Mario A. Terceros H. and Mario Terceros A. 83 Member Profile — David Borger: Poise and Intelligence This article describes the general principles of the Expander Body (EB) system, which has been used successfully to increase the end bearing capacity of bored piles in loose-to-medium dense soils. A key advantage of this technology is the ability to monitor the inflation process, which provides important information regarding soil strength and stiffness. DEEP FOUNDATIONS • MAY/JUNE 2018 • 3 COVER STORY 14 Piles Installed for Southern California ® Executive Director Theresa Engler, [email protected] Executive Editor Dr. Antonio Marinucci, M.B.A., P.E. [email protected] Managing Editor Emeritus Manuel A. Fine, P.E., [email protected] Managing Editor and Advertising Manager Karol Paltsios, [email protected] Aircraft Hangar Renovation Gordon King The author describes the design, testing and installation of more than 1,000 DeWaal drilled displacement piles and more than 200 permanently-cased cast-in-drilled hole piles installed for the renovation of a 319,000 sq ft (29,636 sq m) structural development and to accommodate the jobsite’s restricted access and unique environmental concerns. O T N A S D I N N S U T O I T F U E P T E E D
