Improving Performance of Buildings in Very High-Seismic Regions Volume 1 – Methods, Findings, and Recommendations (FEMA P-2343)

This resource presents the development of Equivalent Single-Degree-of-Freedom (eSDOF) models from more complex 2D (or 3D) Multiple-Degree-of-Freedom (MDOF) models. The focus is on developing eSDOF models for wood light-frame structures and non-wood systems investigated in the document. The eSDOF models are developed through the Equivalent Lateral Force (ELF) procedure and consideration of amplitude-dependent response properties. The appendices detail the steps, methods, and considerations for deriving eSDOF models from MDOF models, emphasizing the importance of effective seismic weight and spectral response coordinates.