This seminar covers the major changes in the 2025 edition of ACI 318, "Building Code for Structural Concrete Code Requirements and Commentary". This edition is the first edition of ACI 318 in 6 years.
All major changes in this edition of the code will be presented and discussed. This includes major changes centered around the topics of the addition of post-installed reinforcing bars, anchorage of closely spaced bars, clarified and updated one-way shear provisions, clarified and expanded seismic requirements, the new sustainability and resilience appendix, the new performance-based wind design appendix and numerous other changes.
The new organization of the code started in the 2014 edition and additional enhancements to the code will be presented. These assist the designer in quickly locating the provisions they need and help assure users they are meeting all the code requirements.
Catherine E. French, PE, NAE, Hon.MACI, FPCI, Dist.MASCE, CSE Professor Emerita, University of Minnesota
Dr. French is College of Science and Engineering Professor Emerita at the University of Minnesota, where she was a member of the faculty for more than 40 years. Her research addresses the behavior of reinforced and prestressed concrete structural systems, field monitoring of bridges, numerical and experimental investigations of structural systems including the effects of earthquakes, evaluation and repair of damaged structures, and development and application of new materials. She is a recipient of a number of awards including the ACI Joe Kelly Award, ACI Henry L. Kennedy Award, ACI Reinforced Concrete Research Council Arthur J. Boase Award, and American Society of Civil Engineers (ASCE) Raymond C. Reese Research Prize. She is a past member of ACI Board of Directors, and numerous other ACI committees. She currently serves on ACI 318, Structural Concrete Building Code, for which she has been a member since 1995. Dr. French is an honorary member of ACI and a member of the National Academy of Engineering.
Robert J. Frosch, PhD, PE, FACI, FASCE, Professor and Vice Provost, Purdue University
Dr. Frosch is a Professor of Civil Engineering and Vice Provost for Academic Facilities at Purdue University, West Lafayette, IN. A Fellow of the American Concrete Institute (ACI) and the American Society of Civil Engineers (ASCE), he has served and chaired numerous ACI technical and board committees including serving as Editor-in-Chief of the ACI Structural Journal and a member of the ACI Technical Activities Committee (TAC). He is a past member of the ACI Board of Direction and a past Trustee of the ACI Foundation. He has been a member of the ACI 318 Structural Concrete Building Code since 2002 and currently chairs ACI 318D, Members, as well as a 318 Task Group on Simplified Design. His research, which focuses on the design and behavior of structural concrete, has resulted in changes to engineering practice and the building codes for both buildings and bridges. He has received numerous awards including the ACI Young Member Award for Professional Achievement, ACI Speaker of the Year Award, ACI Committee 318 Structural Concrete Building Code Distinguished Service Award, Concrete Research Council’s Arthur J. Boase Award, and ACI Joe W. Kelly Award. He received his BSE from Tulane University and his MSE and PhD from the University of Texas at Austin. He is a registered Professional Engineer in Indiana and Louisiana.
Khaled Nahlawi, PhD, PE, Distinguished Engineer, American Concrete Institute
Dr. Nahlawi's role is to provide technical and administrative support to ACI's Technical Committees and communicate the work of these committees to other Standard Developing Organizations and Regulatory Agencies. He received his PhD from the University of Michigan and has over 30 years of experience in the industry in the design and strengthening of structures. One of his projects received the Haller award from the Masonry Society, and a steel mill project received the design award from the Steel Joist Institute. He joined ACI in 2009 and has supported, among other duties, the re-organization effort of ACI 318, Changes to the Concrete Design Standard. He served as the secretary of ACI 562, Assessment, Repair and Strengthening of Concrete Structures from 2019 to 2025 and is the author of MNL-3 (16 and 20), MNL-17(14), and MNL-66(20). Khaled is a registered engineer in California and Michigan.
Matthew R. Senecal, PE, Engineer, American Concrete Institute
Mr. Senecal's role at ACI is to provide technical and administrative support to ACI's Technical Committees and communicate the work of these committees to other Standard Developing Organizations and Regulatory Agencies. He received his BS in Civil Engineering from the University of Notre Dame and his MS in Civil Engineering from the University of Kansas. He worked as a Civil and Structural Engineer for 14 years before joining the ACI Engineering Department in 2004.
Andy Taylor, PhD, SE, FACI, Technical Director, KPFF Consulting Engineers, Seattle, WA
Dr. Taylor has 40 years experience in structural engineering research and structural design practice, including seven years with the Earthquake Engineering Group at the National Institute of Standards and Technology. Since 2007 he has been a member of ACI Committee 318, Structural Building Code, and was chair of ACI Committee 318 from 2019 to 2025. He is a former member of ACI 318 Subcommittee D on Flexure and Axial Loads, and has served on the ACI Technical Activities Committee. Dr. Taylor is past Chair of the Earthquake Engineering Committee of the Structural Engineers Association of Washington. His interests are in the areas of reinforced concrete structures, and performance based seismic design. He is also a specialist in the design of seismic protection measures such as seismic isolation and seismic damping systems. Dr. Taylor serves as an Affiliate Professor in the Department of Civil and Environmental Engineering at the University of Washington, where he has enjoyed teaching courses in structural systems and reinforced concrete design.
Michael L. Tholen, PhD, PE, Senior Managing Director, Technical Operations, American Concrete Institute
Dr. Tholen received his BS in Architectural Engineering, with distinction, in 1992, his MS in Civil Engineering in 1995, and his PhD in Civil Engineering in 1996 from the University of Kansas. He previously worked at ACI as the Engineering Editor of Concrete International. Prior to joining ACI in 2005, he spent over 8 years as a Structural Engineer in the Aviation and Architecture Division at Burns & McDonnell Engineering Company in Kansas City, MO.
Gregory M Zeisler, PE, Engineer, American Concrete Institute
Mr. Zeisler has been with the organization since 2009. He works with several ACI technical committees as staff liaison and is the secretary for ACI Committee 318. Greg has several years of structural design experience in parking and retail facilities, working previously as a Structural Engineer with Durrant. He received his BS in Civil Engineering from the University of Wisconsin-Platteville and his MS in Civil Engineering from Purdue University; he is a licensed professional engineer in Indiana and Wisconsin.