FEMA 440, Improvement of Nonlinear Static Seismic Analysis Procedures

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**FREE FOR DOWNLOAD** An electronic copy of this report is available from the FEMA library.

The ATC-55 (FEMA 440) report, Improvement of Nonlinear Static Seismic Analysis Procedures, was developed under a cooperative agreement between the Federal Emergency Management Agency and the National Earthquake Hazards Reduction Program under the ATC-55 project. (Published 2005, 152 pages) The report includes a CD containing the entire document, plus Appendices A through F for a total of 390 pages.

ABSTRACT: The report is intended for use by design professionals and regulatory personnel who routinely use the Coefficient Method, as detailed in the FEMA-356 Prestandard and Commentary for the Seismic Rehabilitation of Buildings, and (2) the Capacity Spectrum Method, as detailedæ in the ATC-40 Report, Seismic Evaluation and Retrofit of Concrete Buildings. Issues addressed in the FEMA 440 report include:

  1. Current Nonlinear Static Procedures
  2. Strength Degradation
  3. Improved Procedures for Displacement Modification
  4. Improved Procedures for Equivalent Linearization
  5. Evaluation and Comparison of Improved Nonlinear Static Procedures
  6. Procedures for Including Soil-Structure Interaction
  7. Multiple-Degree-of-Freedom Effects
Available free of charge by contacting FEMA (phone: 1-800-480-2520).

View Title Page, Preface, and Contents on the "Downloadable" tab

The FEMA P-440A report, Effects of Strength and Stiffness Degradation on Seismic Response, was funded by the Federal Emergency Management Agency (FEMA) under the ATC-62 project. (Published 2009, 310 pages)

FEMA 440 TOC (FEMA440TOC.pdf, 195 Kb) [Download]