Now Available! FEMA P-2090/ NIST SP-1254 Special Report

The joint FEMA P-2090/ NIST SP-1254 Special Report, Recommended Options for Improving the Built Environment for Post-Earthquake Reoccupancy and Functional Recovery Time, is available for immediate download.  This report was requested by Congress as part of the most recent National Earthquake Hazards Reduction Program (NEHRP) reauthorization, and is the work of a Committee of Experts including more than 30 individuals from federal agencies, nongovernmental organizations, private sector entities, disaster management professional associations, engineering professional associations, and professional construction and homebuilding industry associations.

The report provides options in the form of recommendations, tasks, and alternatives for improving the built environment to increase resilience and reduce the impacts of future natural hazard events.  It includes one overarching recommendation and six additional supporting recommendations. Across all recommendations, there are 17 tasks identifying necessary actions and nine possible alternative actions needed for implementation.  Finally, the report includes an assessment of the recommendations and describes a path forward for implementation.  

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The assessment and retrofit provisions in FEMA P-1100 Prestandard are applicable for dwellings assigned to Seismic Design Category (SDC) B through E. Further, the prescriptive retrofit provisions of the FEMA P-1100 Prestandard are provided for SDS values determined based on the mapped SDC, as follows:

  • For SDC B through D1, SDS shall be taken as 1.0
  • For SDC D2, SDS shall be taken as 1.2
  • SDC E, SDS shall be taken as 1.5

The following are geolocated maps that are searchable by latitude/longitude coordinates, developed by the U.S. Geological Survey.  Click to download the map relevant to your location, search instructions are provided within the PDF:


The following errata are available for download by clicking on the icon.


pdfATC-133 NIST GCR 17-917-17, NEHRP Seismic Design Technical Brief No. 13, Seismic Design of Precast Concrete Diaphragms: A Guide for Practicing Engineers: Applicable for reports sold or distributed before September, 2017.


pdfATC-131 NIST GCR 16-917-38, NEHRP Seismic Design Technical Brief No. 12, Seismic Design of Cold-Formed Steel Lateral Load-Resisting Systems: A Guide for Practicing Engineers: Applicable for the August, 2016 version of the report.


pdfATC-110 FEMA P-1100 Report, Vulnerability-Based Seismic Assessment and Retrofit of One- and Two-Family Dwellings: Applicable for reports sold or distributed before December 2019.



ATC-72-1, Modeling and Acceptance Criteria for Seismic Design and Analysis of Tall Buildings: Corrections to Equation 3-2 (page 3-14) and Equation 4-9 (Page 4-31) applicable to the 2010 version of the report sold or printed before September 1, 2016. 

pdfATC-63 Quantification of Building Seismic Performance Factors, FEMA P-695 Report: Applicable for June, 2009 version of printed report.


pdfATC-60 Commentary on Wind Code Provisions, Volume 1, First Printing: Applicable for reports sold or distributed before November, 2004.


pdfATC-38 Database on the Performance of Structures Near Strong-Motion Recordings, 1994 Northridge California, Earthquake: Applicable for reports sold or distributed before August, 2003.