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This research study was funded by the California Earthquake Authority (CEA). The support of CEA is gratefully acknowledged. This website documents the methods and findings of a multi-year, multi-disciplinary project coordinated by the Pacific Earthquake Engineering Research (PEER) Center and funded by the California Earthquake Authority (CEA). The overall project is titled “Quantifying the Performance of Retrofit of Cripple Walls and Sill Anchorage in Single-Family Wood-Frame Buildings,” henceforth referred to as the “PEER-CEA Project.” The PEER-CEA Project and associated works are Copyrighted © 2020, The Regents of the University of California (Regents), and licensed to the public under the Creative Commons Attribution 4.0 International License(link is external). All Creative Commons Attribution 4.0 International License Terms and Conditions(link is external) shall apply. The users of the PEER-CEA Project and associated works are requested to acknowledge the Pacific Earthquake Engineering Research (PEER) Center in their work and publications.