CONTENTS FEATURES Departments PRESIDENT’S MESSAGE EXECUTIVE DIRECTOR UPDATE DFI ACTIVITIES LRFD — Get Behind It! . . . . . . . . . . . . . 7 Celebrating Our 40-Year History . . . . . . 9 IFCEE 2015 report with photos by Mark Skalny of Visual Nature Images and Herb Engler; Atlas Tube Student Day, News on SEFE 8 and other upcoming seminars; Forty Reasons to Attend the 40th Annual Conference; an update on the DFI Committee Project Fund, and more. . . 23 BENEATH THE SURFACE Education is Far More than the Learning of Facts . . . . . . . . . . . . . . . . . . . . . . . . 43 EDUCATIONAL TRUST REPORT TECHNICAL ACTIVITIES UPDATE . . . . 47 Introduction of three new committees and their chairs, report from one committee chair, and recap of the University of Minnesota Geotechnical Conference.. . 97 DFI PEOPLE AND COMPANIES News about people, companies and products . . . . . . . . . . . . . . . . . . . . . . 101 CALENDAR & AD INDEX . . . . . . . . 108 75 FHWA GEC 7- 2015: A New Platform for LRFD Soil Nail Design Carlos A. Lazarte, Ph.D., P.E., G.E, Helen Robinson, P.E., Allen Cadden, P.E., Ryan R. Berg, P.E., Barry D. Siel, P.E., and Silas Nichols, P.E. Geotechnical Engineering Circular (GEC) 7 was recently revised by the Federal Highway Administration (FHWA) to provide up-to- date guidance for the design and construction of soil nail walls. The 2015 version of GEC 7 presents a procedure that is compatible with both existing Allowable Stress Design (ASD) limit equilibrium soil nail analysis/design software and a Load and Resistance Factor Design (LRFD) platform. SPECIAL ISSUE : LRFD SPECIAL ISSUE : LRFD 85 A Discussion on ACIP and DD Piles: LRFD – Status, When, Why and How? Matthew Meyer, P.E., D.GE. The LRFD/AASHTO initiative of the ACIP Pile Committee was focused on obtaining AASHTO approval and determining how its members can assist with the advancement of the state of design of ACIP and Drilled Displacement (DD) piles as it relates to Load Resistance Factored Design (LRFD). This article provides the status of this initiative and with the intent of fostering further discussion and support. FINDING COMMON GROUND® DFI is an international association of contractors, engineers, suppliers, academics and owners in the deep foundations industry. We find common ground through networking, education, communication and collaboration. Our multi-disciplinary membership creates a consensus voice and a common vision for continual improvement in the planning, design and construction of deep foundations and excavations. Become a Member of DFI at www.dfi.org DEEP FOUNDATIONS • MAY/JUNE 2015 • 5 92 LRFD vs. ASD for Driven Piles — the Code Drives the Methodology Gerald Verbeek Whether LRFD or Allowable Stress Design (ASD) is used to design driven pile foundations in the U.S. could seem to depend on the project owner. In the case of public transportation jobs the former is used almost exclusively, just as the latter is almost always used for private jobs. In reality it depends on the design code, as discussed in this article. SPECIAL ISSUE : LRFD
