World Trade Center Building Performance Study

Table of Contents

Chapter 1 - Introduction 
Chapter 2 - WTC 1 and WTC 2 
Chapter 3 - WTC 3
Chapter 4 - WTC 4, 5, and 6  
Chapter 5 - WTC 7 
Chapter 6 - Bankers Trust Building  
Chapter 7 - Peripheral Buildings  

Chapter 8 - Observations, Findings, and Recommendations 
Appendix A - Overview of Fire Protection in Buildings 
Appendix B - Structural Steel and Steel Connections 
Appendix C - Limited Metallurgical Examination 
Appendix D - WTC Steel Data Collection 

Steel Data Collection Spread Sheet from Appendix D 

Appendix E - Aircraft Information 

Appendix F - Structural Engineers Emergency Response Plan 

Appendix G - Acknowledgements 

Appendix H - Acronyms and Abbreviations 

Appendix I -Metric Conversions 

The investigation was performed by Building Performance Assessment Team (BPAT) assembled by FEMA from volunteers from the American Society of Civil Engineers (ASCE). W. Gene Corley, Ph.D, Senior Vice President of Construction Technologies Laboratory in Skokie, IL served as principal investigator. Corley was also the principal investigator for FEMA's study of the 1995 Murrah Federal Office Building attack. The BPAT's investigation was funded by $600,000 from FEMA and $500,000 in ASCE in-kind contributions.

In May of 2002 The Federal Emergency Management Agency (FEMA) released its World Trade Center Building Performance Study.