Ductile Reinforced Concrete Coupled Walls:
FEMA P695 Study
A code change proposal has been approved for ACI 318-19 Sections 2.3 and 18.10.9 that defines a "Ductile Coupled Wall" as an assembly of walls with aspect ratio of total wall height to length greater than 2.0 which are linked by coupling beams having aspect ratios between 2.0 and 5.0. The aim of this study was to justify the use of the proposed design parameters by applying the FEMA P695 approach to the newly defined lateral system. This report summarizes the design, modeling, and collapse assessment results for the Seismic Design Category being considered for a series of Ductile Coupled Wall configurations representative of common practice.
The Charles Pankow Foundation in partnership with the American Concrete Institute is pleased to share this final report of research grant #06-17 conducted by principal investigator John W. Wallace, Professor and Director, UCLA along with Negin A. Tauberg, Ph.D. Candidate, UCLA and Kristijan Kolozvari, Assistant Professor, CSU Fullerton.
Thank you to the independent peer review panel, Ron Hamburger, Anindya Dutta, Steve McCabe, and Charlie Kircher for their valuable comments, as well as our advisory group, which included Satyendra K. Ghosh, John Hooper, David Fields, Ron Klemencic, Andy Taylor, Jim Harris, and Kevin Aswegan, and members of the BSSC PUC IT4 committee who provided valuable input and support over the course of the research.