Supporting Materials and Background Documentation

FEMA P-58-3, Seismic Performance Assessment of Buildings, Volume 3 – Supporting Electronic Materials and Background Documentation, Third Edition, consists of a series of electronic products assembled to assist engineers in conducting seismic performance assessments and in understanding the technical basis of the methodology. The Second Edition was published in 2016 with the release of interim updates to PACT and underlying fragility and consequence data. The Third Edition is published on this website and includes the latest version of PACT, along with additional updates to fragility and consequence data, and added tools and background documentation. The following electronic tools and documents are included:

Supporting Materials

3.1   Performance Assessment Calculation Tool (PACT) – Executable Software for PACT version 3.1.2
PACT is an electronic calculation tool, and repository of fragility and consequence data, that performs the probabilistic calculations and accumulation of losses described in the methodology. It includes a series of utilities used to specify building properties and update or modify fragility and consequence information in the referenced databases. An executable file (.exe) is provided to facilitate installation of the tool. FEMA P-58, Volume 2, Appendix C presents a User Manual for PACT.

3.2   Provided Fragility Data
This folder contains the following products to aid in the management and maintenance of all provided fragility and consequence data outside of PACT and to assist in the development of consequences for custom fragility specifications:

3.3   Normative Quantity Estimation Tool
This tool is an Excel workbook designed to assist in estimating the type and quantity of nonstructural components typically present in buildings of a given occupancy and size. The Normative Quantity Estimation Tool provides approximate quantities based on building occupancy and square footage. Appendix D of FEMA P-58, Volume 2 presents a User Manual for this tool.

3.4   Performance Estimation Tool (PET)
PET is an Excel workbook that utilizes assessment results from the application of the FEMA P-58 methodology to a group of archetypical building representative of structures conforming to the seismic design requirements of the current building code. The tool can be used as a design aid to obtain an initial estimate of required design strength and drift ratio necessary to achieve a desired performance objective. PET is used to directly evaluate the effects of varying assumptions on performance, and to directly determine the strength and stiffness required to meet selected performance objectives. This approach, along with recommendations for extrapolating beyond limitations in available data, is described in FEMA P-58, Volume 6, Section 4.4.

  3.5   Static Pushover to Incremental Dynamic Analysis (SPO2IDA)
SPO2IDA is an Excel workbook application that was originally developed by Vamvatsikos and Cornell (2006). This tool uses empirical relationships from a large database of incremental dynamic analysis results to convert static pushover curves into probability distributions for building collapse as function of ground shaking intensity.

3.6   Collapse Fragility Tool
The Collapse Fragility Tool is an Excel workbook application that fits a lognormal distribution to collapse statistics obtained from a series of nonlinear dynamic analyses at different ground motion intensity levels.

Background Documentation

FEMA P-58 Background Documents are a series of reports documenting the technical background and source information for key aspects of the FEMA P-58 methodology and its implementation. Background Documents were developed by consultants, serving at various levels within the project hierarchy, reporting the results of: (1) decisions on technical development protocols; (2) focused studies on the development of key aspects of the methodology; (3) documentation of recommended procedures; and (4) collection of available data for the development of structural and nonstructural fragilities. They were initially intended to serve as a record of the technical state-of-knowledge at the time they were produced, and as resources for the development of the eventual project reports. As such, they represent a snapshot in time, and may, or may not, match the technical content, recommended procedures, or data incorporated into the final methodology and its implementation.

Select a series, below, to download a .zip file of the background documents listed.

3.7 Technical Background Documentation

3.7   Technical Background Documentation

  • ATC-58-1, Proceedings of FEMA-Sponsored Workshop on Communicating Earthquake Risk (2002)
  • ATC-58-2, Preliminary Evaluation of Methods for Defining Performance (2003)
  • ATC-58-3, Proceedings of FEMA-Sponsored Workshop on Performance-Based Design (2003)
  • ATC-58-4, Proceedings of FEMA-Sponsored Workshop on Communicating Seismic Performance Metrics in Design Decision-Making (2014)
  • ATC-58-5, Proceedings of FEMA-Sponsored Workshop on Design Guidelines and Tools to Implement Next-Generation Seismic Design (2016)
  • ATC-58-6, Recommendations for Communicating Seismic Performance Considerations in Design Decision-Making (2017)
  • 3.7.1, PACT Technical Manual Version 3.1.2 (Hagie and Naeim, updated 06/2018)
  • 3.7.2, Validation and Verification Team Report (Baker, Bonneville, Scawthorn, and Seligson, 03/05/2008)
  • 3.7.3, Development of Next-Generation Performance-Based Seismic Design Guidelines, Validation and Verification Plan (Hamburger, 08/08/2008)
  • 3.7.4, Simplified Response Analysis Procedures (Huang and Whittaker, 04/08/2007)
  • 3.7.5, Calculation of Peak Ground Velocity from One-Second Pseudo-Spectral Velocity (Huang and Whittaker, 08/07/2012)
  • 3.7.6, Fragility Testing and Reporting for ATC-58 (Porter and Comartin, Revision 1.5, 09/05/2008)
  • 3.7.7, Risk Management Products Team Downtime Model (Mitrani-Reiser, 10/10/2008)
  • 3.7.8, Risk Management Products Team Casualty Consequence Function and Building Population Model Development (Seligson, 9/12/2008)
  • 3.7.9, Taxonomy of Nonstructural Building Components (Porter, 03/03/2005)
  • 3.7.10, Generating Statistically Consistent Demand Vectors for Loss Computations Using Spectral Value Decomposition (Basu and Whittaker, Revision 7, 05/27/2011)
  • 3.7.11, Risk Management Products Team Report: PACT Verification and Sensitivity Studies (Hachem, 10/06/2008)
  • 3.7.12, Risk Management Products Team Report: PACT 2.0 Verification Studies (Hachem, 02/05/2012)
  • 3.7.13, PACT Beta Test Overview: Example Buildings, Sites, and Ground Motions (Haselton and Churapalo, 2/23/2012)
  • 3.7.14, PACT Beta Test Example: Building A, Steel Special Moment Frame Building (Zareian, 03/23/12)
  • 3.7.14, PACT Beta Test Example: Building B, Reinforced Concrete Special Moment Frame Building (Haselton and Churapalo, 02/28/12)
  • 3.7.16, PACT Beta Test Example: Building C, Reinforced Masonry Shear Wall Building (Shing and Murcia-Delso, 02/28/12)
  • 3.7.17, Development of Fundamental Period Adjustment Factors for Buildings (Harris, Zareian, Naeim, September 2016)
  • 3.7.18, Nonstructural and Non-Modeled Structural Stiffness (Haselton, Baker, Cook, September 2016)
  • 3.7.19, Updates to Fragilities (March 2018)
  • 3.7.20, Methodology for Environmental Impact Assessment (Huang and Simonen, September 2018)
  • 3.7.2, Simplified Analysis Models for SCBF and BRBF (Saldana and Terzic, March 2018)

3.8 Structural Fragility Background Documentation

  3.8   Structural Fragility Background Documentation

  • 3.8.1, Fragility Curves for Wood Light-Frame Structural Systems (Ekiert and Filiatrault, 02/20/2008)
  • 3.8.2, Fragility Curves for Cold-Formed Steel Light-Frame Structural Systems (Grummel and Dolan, 06/06/2010)
  • 3.8.3, Fragility Curves for Components of Steel SMF Systems, 62 pp. (Deierlein and Victorsson, 08/25/2008)
  • 3.8.4, Fragility Curves for Concentrically Braced Steel Frames with Buckling Braces (Roeder et al., 11/30/2009)
  • 3.8.5, Damage States and Fragility Functions for W-Shape Steel Link Beams in Eccentrically Braced Frames (Gulec et al., 07/04/2010)
  • 3.8.6, Fragility Functions for Reinforced Concrete Moment Frames (Lowes et al., 08/24/2009)
  • 3.8.7, Fragility Curves for Slab-Column Connections (Gogus and Wallace, 11/01/2008)
  • 3.8.8, Damage States and Fragility Curves for Squat Reinforced Concrete Walls (Gulec et al., Final Draft, 02/03/09)
  • 3.8.9, Fragility Specifications for Slender Walls (Lowes et al., 11/17/2010)
  • 3.8.10, Damage States and Fragility Curves for Reinforced Masonry Shear Walls (Murcia-Delso and Shing, 12/01/2009)

3.9 Nonstructural Fragility Background Documentation

3.9   Nonstructural Fragility Background Documentation

  • 3.9.1, Architectural Glass Seismic Behavior Fragility Curve Development (Memari et al., 03/01/2011)
  • 3.9.2, Seismic Fragility of Building Interior Cold-Formed Steel Framed Gypsum Partition Walls (Miranda and Mosqueda, Version 6, 06/15/2011)
  • 3.9.3, Seismic Fragility of Building Interior Doors (Miranda, 10/06/2009)
  • 3.9.4, Development of Seismic Fragilities for Acoustical Tile or Lay-in Panel Suspended Ceilings for the ATC-58 Project (Bachman, 01/19/2011)
  • 3.9.5, Fragility Curves for Storage Racks (Filiatrault and Bachman, 05/01/2011)
  • 3.9.6, Seismic Fragility of Standard Building Stairs (Higgins, 03/11/2011)
  • 3.9.7, Fragility of Masonry Chimneys (Osteraas and Krawinkler, Revision 2, 12/08/2010)
  • 3.9.8, ATC-58 Fragility of Masonry Parapets (Osteraas and Krawinkler, Revision 4, 12/28/10)
  • 3.9.9, Fragility of Concrete or Clay Tile Roofing (Porter, Version 3.0, 04/21/09)
  • 3.9.10, Fragility of Mechanical, Electrical, and Plumbing Equipment Considering Installation Conditions, 42 pp. (Porter, 03/14/11) pdf format
  • 3.9.11, Development of Seismic Fragilities for MEP Distribution Systems for the ATC-58 Project (Bachman, 08/30/2012)
  • 3.9.12, Fragility of Non-Structural Components (Eidinger, 04/30/2009)
  • 3.9.13, Fragility of Hydraulic Elevators for ATC-58 (Porter, Version 1.0, 08/21/2008)
  • 3.9.14, Fragility of Traction Elevators (Porter, Version 4.0, 07/15/2009)
  • 3.9.15, Fragility of Chillers (Porter, 10/04/2009)
  • 3.9.16, Fragility of Distribution Panels (Porter, 10/05/2009)
  • 3.9.17, Fragility of Engine Generators (Porter, 10/05/2009)
  • 3.9.18, Fragility of Low Voltage Switchgear (Porter, 10/05/2009)
  • 3.9.19, Fragility of Motor Control Centers (Porter, 10/05/2009)
  • 3.9.20, Fragility of Air Compressors (Porter, 10/09/2009)
  • 3.9.21, Fragility of Air Handling Units (Porter, 10/11/2009)
  • 3.9.22, Fragility of Fans (Porter, 09/12/2009)
  • 3.9.23, Fragility of Motor Generators (Porter, 09/12/2009)
  • 3.9.24, Fragility of Transformers (Porter, 09/12/2009)
  • 3.9.25, Fragility of Battery Chargers (Porter, 10/18/2009)
  • 3.9.26, Fragility of Battery Racks (Porter, 10/18/2009)
  • 3.9.2, Fragility of Control Panels (Porter, 10/20/2009)
  • 3.9.28, Fragility of Cooling Towers (Porter, 02/25/2010)
  • 3.9.29, Fragility of Home Entertainment Equipment (Porter, Version 1.0, 08/21/08)
  • 3.9.30, Fragility of China and Art on Shelves (Porter, Version 1.0, 08/21/08)
  • 3.9.31, Acoustical Tile or Lay-in Panel Suspended Ceilings (Soroushian, September 2016)
  • 3.9.32, Interior Cold-Formed Steel Framed Gypsum Partition Walls (Mosqueda, September 2016)