DFI Journal: Volume 12, Issue 2 Available foundation integrity and drilled shaft construction. The research team at Temple developed a borehole testing system in a laboratory setting as a proof-of-concept study to generate high-resolution images of defects in deep foundations. The paper presents an overview of the experimental setup, the development of the testing systems including hardware, survey methods, and data processing techniques, followed by a discussion on application of the results to QA/QC of deep foundations. Other papers in this latest issue of the The most recent edition of the DFI Journal, Volume 12, Issue 2, is now available. This issue is a great mix of research papers, award papers, case studies, and papers from the DFI Young Professor and Student Paper Competitions. Articles by local and international authors cover a broad spectrum of research and project topics and provide practical knowledge in foundation engineering, quality assurance and testing, and in-situ investigations. DFI’s 43 Annual Conference on Deep Foundations in Anaheim, Calif., in October 2018. The case study, “Wanapum Dam Repaired Using Post-Tensioning Anchors,” by Abigail Stein, Aled Hughes, Rick Deschamps and Brian Barkauskas, presents the challenges and success story of a unique underwater repair work using post- tension anchoring systems. The dam and surrounding areas were closed after severe cracking was observed in one of the dam’s monoliths. The paper describes the design review, potential damage causes, repair strategies and a step-by-step description of the construction and remedy procedures. The research paper, “Advances in Stress-Wave Nondestructive Testing Methods for Evaluat ion of Deep Foundations,” by Prof. Joseph Coe from Temple University, provides a critical review of nondestructive testing (NDT) methodologies. Coe’s paper introduces recent advances in stress-wave NDT systems for use in assessments of in-service DEEP FOUNDATIONS • JAN/FEB 2019 • 41 Two of the papers were presented at rd Journal include: • “Texas Cone Penetrometer Foundation Design Method: Qualitative and Quanti-tative Assessment,” by Rozbeh B. Moghaddam, Pr iyantha W. Jayawickrama, William D. Lawson, James G. Surles and Hoyoung Seo. • “Performance-based Design of Energy Foundations,” by Dr. Alessandro Rotta Loria a post-doctoral researcher at the Swiss Federal Institute of Technology in Lausanne, EPFL, assistant professor at Northwestern University, and winner of the DFI 2018 Young Professor Paper Competition. “Comparison of FEA and Analytical Methods For Determining Stability of a RAP Supported MSE Wall,” by Emily Reed, a graduate student from Tennessee Technical University who received an honorable mention in the 2018 DFI Student Paper Competition. An online subscription to the DFI Journal is included with DFI membership, and issues can be accessed by signing into the member portal — MyDFI. Members and nonmembers can order printed copies of the 2007-2013 volumes of the Journal from the publications page of www.dfi.org; members at preferential rates. Subscriptions to the online Journal are at www. tandfonline.com/pricing/journal/ydfi20.
