Downloadable

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 S_DS values determined based on the mapped SDC, as follows:

For SDC B through D1, S_DS shall be taken as 1.0
For SDC D2, S_DS shall be taken as 1.2
SDC E, S_DS 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:

2014 South Napa Earthquake

FEMA P-1024 report, Performance of Buildings and Nonstructural Components in the 2014 South Napa Earthquake

FEMA P-1024/RA1, South Napa Earthquake Recovery Advisory: Repair of Earthquake-Damaged Masonry Fireplace Chimneys

FEMA P-1024/RA2, South Napa Earthquake Recovery Advisory: Earthquake Strengthening of Cripple Walls in Wood-Frame Dwellings

Resilience of Lifeline Systems

ATC-102 Project report, Earthquake Resilient Lifelines: NEHRP Research, Development, and Implementation Roadmap (NIST GCR 14-917-33)

ATC-126 Project report, Critical Assessment of Lifeline System Performance: Understanding Societal Needs in Disaster Recovery (NIST GCR 16-917-39)

Rapid Visual Screening Tools

FEMA P-154, Rapid Visual Screening of Buildings for Potential Seismic Hazards

FEMA P-155, Rapid Visual Screening of Buildings for Potential Seismic Hazards: Supporting Documentation

www.roverready.org

Windspeed and Ground Snow Load by Location Websites

http://windspeed.atcouncil.org/

http://snowload.atcouncil.org/

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

ATC-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.

ATC-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.

ATC-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.

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

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

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

Welcome to the ATC Team!

Michael Valley

As a former Principal at Magnusson Klemencic Associates in Seattle, Mike Valley comes to ATC with more than 30 years of structural engineering experience in new design, evaluation and retrofit of existing buildings, applied research, and codes and standards development. Mike’s design experience includes the landmark Salesforce Tower in San Francisco, and his research and development experience includes the FEMA 356 Prestandard and Commentary for the Seismic Rehabilitation of Buildings, FEMA P-2012 Assessing Seismic Performance of Buildings with Configuration Irregularities (ATC-123 Project), and NIST GCR 10-917-9 Applicability of Nonlinear Multiple-Degree-of-Freedom Modeling for Design (ATC-76-6 Project).

Mike also has extensive experience as an ATC consultant serving as a reviewer, a technical contributor, and Project Director on multiple ATC projects. We look forward to how Mike’s unique experiences as a successful team member will contribute to ATC projects in the future.

Michael Mahoney

Retired from federal service as a Senior Geophysicist with the Federal Emergency Management Agency (FEMA), Mike Mahoney comes to ATC with more than 30 years of experience in hazard mitigation program management and policy development, post-disaster response and recovery, and problem-focused research and development in support of FEMA’s efforts under the National Earthquake Hazards Reduction Program (NEHRP). He has led FEMA’s earthquake-related work with the International Code Council and has been involved with the development of national model codes and standards since 1984.

In his career at FEMA, Mike has led the development of countless major FEMA publications, including: FEMA 350 Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings and its series of companion reports (ATC-41 Project series), FEMA P-58 Seismic Performance Assessment of Buildings, Methodology and Implementation (ATC-58 Project series), FEMA P-695 Quantification of Building Seismic Performance Factors (ATC-63 Project), FEMA P-2018 Seismic Evaluation of Older Concrete Buildings for Collapse Potential (ATC-78 Project), and FEMA P-2090/NIST SP-1254 Recommended Options for Improving the Built Environment for Post-Earthquake Reoccupancy and Functional Recovery Time (ATC-137 Project). With Mike’s extensive knowledge of federal government programs, and past collaboration with state and local agencies, hazard mitigation partners, and code development organizations, we look forward to how his unique experiences will help serve ATC’s client needs and objectives in the future.