Seismic design of cast-in-place concrete diaphragms, chords, and collectors: a guide for practicing engineers second edition

National Earthquake Hazards Reduction Program (NEHRP) Technical Briefs are published by the National Institute of Standards and Technology (NIST) as aids to the efficient transfer of NEHRP and other research into practice, thereby helping to reduce the nation's losses resulting from earthquakes. NIST is a federal technology agency within the U.S. Department of Commerce that promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life. The Applied Technology Council (ATC) is a nonprofit corporation advancing engineering applications for hazard mitigation. This publication is a product of Task Order 15-264 under Contract SB1341-13-CQ-0009 between ATC and NIST. Jon A. Heintz serves as the Program Manager for work conducted under this contract, and Veronica Cedillos and Scott D. Schiff served as Associate Program Managers on this Task Order. where he teaches and conducts research on earthquake-resistant concrete construction. He is a Fellow of the American Concrete Institute. He has served on the American Concrete Institute (ACI) Code Committee 318 since 1989, serving as Chair for the 2014-2019 code cycle. He is a Fellow of the Structural Engineers Association of California and member of the National Academy of Engineering. (First and Second Editions) is a structural engineer and Principal at Magnusson Klemencic Associates, a structural and civil engineering firm headquartered in Seattle, WA. He is a Senior Project Manager in the firm's Convention Center Specialist Group. In addition to the design of large, complex convention center projects worldwide, he served on the Building Seismic Safety Council Provisions Update Committee – Issue Team 6 that focused on the determination of diaphragm seismic design force levels and the design of diaphragms of many materials, including cast-in-place concrete. He also serves as the diaphragm specialist at Magnusson Klemencic Associates. The contributions of the review panelists for this publication are gratefully acknowledged. where he designs, rehabilitates, and investigates building and nonbuilding structures. He is a Fellow of the American Concrete Institute (ACI) and has served on the ACI Code Committee 318 since 2003. He chairs ACI 318 Subcommittee R on high-strength reinforcement. He also has served as a member of the Seismic Subcommittee of ASCE 7 since 2000. Acknowledgments This Second Edition supersedes the First Edition of GCR 10-917-4, published in August 2010. It is based on information in the original publication and includes updated references to codes and standards, updated guidance, …