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WTC Investigation Archives

• Link to WTC 7 Technical Briefing on Tuesday, Aug. 26, 2008 11 a.m. EDT
• Minutes of the NCST Advisory Committee meeting, December 18, 2007
• National Construction Safety Team Advisory Committee Meeting, December 18, 2007
• NIST Status Update on World Trade Center 7 Investigation
• NIST WTC Recommendations Spur New Model Building Codes
• Minutes of the NCST Advisory Committee meeting, December 14, 2006
• Presentation:  "WTC 7 Technical Approach and Status Summary", December 12, 2006, Therese McAllister, NIST
• Testimony of Dr. S. Shyam Sunder Before New York City Council Joint Meeting, Committees on Lower Manhattan Redevelopment; Fire & Criminal Justice Services Hearing on “Oversight - Issues of Health and Safety Regarding the Storage of Diesel Fuel at 60 Hudson Street, Manhattan”, September 8, 2006
• Remarks on Progressive Collapse by Dr. S. Shyam Sunder at May 1, 2006 Meeting of NIBS Building Code Experts and Structural Engineering Organizations
• NIST Statement on Progressive Collapse
• World Trade Center Study Spurs Improvement of Codes
• Public Comments on the Final Reports of the Federal Building and Fire Investigation of the World Trade Center Disaster
• NIST Urges Implementation of Recommendations from World Trade Center Investigation
• Final Towers Report Released Today at Congressional Hearing
• Statement of William Jeffrey, Director, National Institute of Standards and Technology, Technology Administration, U.S. Department of Commerce on The Building and Fire Safety Investigation into the World Trade Center Collapse before the Committee on Science House of Representatives, Oct. 26, 2005 (pdf)
• Status of NIBS Effort: Translating Recommendations into Model Building Codes 
• October 24-25, 2005 Meeting of the NIBS/MMC Committee to Translate the NIST World Trade Center Investigation Recommendations Into Building Codes And Standards (pdf)
• Presentation on the U.S. Federal Building and Fire Safety Investigation of the World Trade Center Disaster to the 4th Annual Congress on Infrastructure Security for the Built Environment, October 19, 2005, Dr. James E. Hill, Director, Building and Fire Research Laboratory, NIST (pdf)
• Presentations from Sept. 13-15, 2005,Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center (WTC)
• Agenda and Presentations for Sept. 12 and Sept. 13, 2005, National Construction Safety Team Advisory Committee Meeting
• News Release: NIST World Trade Center Investigation Team Calls for Improvements; Draft Report and Recommendations on Safety, Emergency Response Released for Comment (June 23, 2005)
• Remarks by NIST Acting Director Hratch Semerjian at the June 23, 2005, press briefing
• Presentation by Shyam Sunder, lead investigator for the federal building and fire safety investigation of the World Trade Center disaster, June 23, 2005 (presentation includes abridged recommendations) (.pdf)
• Draft summary report—contains the investigation’s principal findings and recommendations for changes to codes, standards, and practices
  • Executive summary
  • Complete recommendations
  • Full report
• Complete set of draft reports available for public comment
• Guidance for commenting on the draft reports
• View archived video of press briefing
• Draft Statement of Work for Structural Analysis of WTC 7 Available for Comment
• Technical Conference on the Federal Building and Fire Safety Investigation of the World Trade Center (WTC) Disaster
  (September 13-15, 2005 , NIST, Gaithersburg, MD)
• Presentation by Shyam Sunder at April 5, 2005, Public Briefing
• Comprehensive presentation on NIST's World Trade Center investigation (April 5, 2005)
  • Introduction to NIST's World Trade Center Investigation (.pdf)
  • Analysis of Collapse of WTC 1 and WTC 2 (WTC Towers) (.pdf)
  • Collapse Sequence of WTC 1 and WTC 2 (WTC Towers) (.pdf)
  • Collapse of WTC 7 (.pdf)
  • Analysis of WTC Towers' Baseline Performance (.pdf)
  • Life Safety (Evacuation, Emergency Response, Active Systems) (.pdf)
  • Building and Fire Safety Procedures and Practices (.pdf)
  • Approach to Recommendations (.pdf)
• Presentation by Shyam Sunder and William Grosshandler at the NFPA World Safety Conference & Exposition, Las Vegas, NV, on June 8, 2005: "NIST's Findings on the World Trade Center Fire and Collapse"
• Advisory Committee 2004 Report to Congress (.pdf)
• Comprehensive presentation on NIST's World Trade Center investigation
  • Introduction to NIST's World Trade Center Investigation (.pdf)
  • Analysis of Collapse of WTC 1 and WTC 2 (WTC Towers) (.pdf)
  • Collapse Sequence of WTC 1 and WTC 2 (WTC Towers) (.pdf)
  • Collapse of WTC 7 (.pdf)
  • Analysis of WTC Towers' Baseline Performance (.pdf)
  • Life Safety (Evacuation, Emergency Response, Active Systems) (.pdf)
  • Building and Fire Safety Procedures and Practices (.pdf)
  • Approach to Recommendations (.pdf)
• Minutes from the National Construction Safety Team Advisory Committee November 22, 2004, Meeting
• Agenda for November 22, 2004, National Construction Safety Team Advisory Committee Meeting
• Agenda and Presentations for Oct. 19 and Oct. 20, 2004, National Construction Safety Team Advisory Committee Meeting (.pdf)
• Latest Findings from NIST World Trade Center Investigation Released; Leading Collapse Sequence for Each WTC Tower Defined
• Minutes from the National Construction Safety Team Advisory Committee October 19-20, 2004 Meeting
• Presentation by Shyam Sunder to the Chicago Committee on High-Rise Buildings, Sept. 9, 2004 (.pdf)
• Fact Sheet - "NIST Tests Provide Fire Resistance Data on World Trade Center Floor Systems" (Updated 9/9/04)
• Fire Resistance Testing of WTC Floor System, Aug. 25, 2004, Presentation by S. Shyam Sunder (.pdf)
• Fire Resistance Testing of WTC Floor System, Aug. 25, 2004, Presentation by John Gross (.pdf)
• Federal Investigators Classify WTC Victims’ Locations Within Collapsed Buildings
• News Release - "Interim Findings from NIST World Trade Center Building and Fire Safety Investigation Identify Issues with Current Standards, Codes and Practices"
• Fact Sheet - "Key Findings of NIST’s June 2004 Progress Report on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster"
• Minutes from the National Construction Safety Team Advisory Committee June 22-23, 2004 Meeting
• Agenda and Presentations for National Construction Safety Team Advisory Committee Meeting June 22-23, 2004
• World Trade Center Investigation Status Presentation (6-18-04) by S. Shyam Sunder (.pdf)
• June 2004 Progress Report on the Federal Building and Fire Safety Investigation of the World Trade Center
• Agenda for November 22, 2004, National Construction Safety Team Advisory Committee Meeting
• NCST Advisory Committee to Meet on October 19 and 20 World Trade Center, Rhode Island Nightclub Fire Investigations to be Discussed (Advisory)
• NCST Advisory Committee Meeting Rescheduled (Advisory)
• NIST Determines Actual Wind Loads Used to Design World Trade Center Towers (News Release)
• Federal Register Notice for NCST Advisory Committee Oct. 5-6, 2004 Meeting (NOTE: Meeting rescheduled) (.pdf)
• Fact Sheet - "Improving the Safety of Occupants and First Responders"
• February 12, 2004, Public Meeting (Index to Archived Pages)
• Statement of Clarification to ENR Article
• Opportunity for Public Viewing of WTC Fire Test (Advisory)
• Minutes from the National Construction Safety Team Advisory Committee December 2-3, 2003, Meeting
• Agenda and Presentations on WTC Investigation Progress Given at Dec. 2-3, 2003 National Construction Safety Team Advisory Committee Meeting
• Commerce's NIST Updates Progress of World Trade Center Investigation
  Access to All Essential Data Has Been Obtained Dec. 2, 2003 (News Release)
• Public Update on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster (.pdf) Dec. 2003
• Minutes of the October 23, 2003, Workshop to Review Reference Structural Models of the WTC Towers (.pdf)
• Agreements to Facilitate WTC Investigation Oct. 13, 2003
• NIST Details First-Person Data Collection Projects for WTC Investigation
  Commerce Agency Needs Participation from Survivors, First-Responders and Families of Victims Sept. 17, 2003 (News Release)
• September 17, 2003 Media Briefing (Index to Archive pages)
• Improving the Safety of Occupants and First Responders (Fact Sheet)
• Minutes from the National Construction Safety Team Advisory Committee August 26-27, 2003, Meeting
• Presentations on WTC Investigation at Aug. 26-27, 2003, NCST Advisory Committee Meeting (.pdf)
• Commerce's NIST Reports on Progress of World Trade Center Investigation at One-Third Mark-- Agency Notes Cooperation, Seeks More Information (News Release)
• NCST Advisory Committee 2003 Report to Congress (.pdf) (Publication)
• NCST Advisory Committee Submits First Annual Report to Congress
  Offers Four Major Recommendations to Improve Future Building Failure Investigations (News Release)
• Status of Data Collection Efforts (Statement)
• Remarks by Dr. Arden L. Bement, Jr., News Media Briefing , May 7, 2003 (PowerPoint)
• Remarks by Dr. Shyam Sunder, News Media Briefing, May 7, 2003 (PowerPoint)
• May 2003 Progress Report on the Federal Building and Fire Safety Investigation of the World Trade Center (.pdf) (Publication)
• Statement by NIST Director Arden Bement on NIST's World Trade Center Evacuation and Safety Studies, April 8, 2003
• Commerce’s NIST to Brief Media in NYC on Progress of WTC Investigation, May 1, 2003 (Advisory)
• Construction Trade Center Investigation Off to Solid Start, Commerce's NIST Reports, Dec. 9, 2002 (News Release)
• Progress Report on NIST Building and Fire Investigation into the World Trade Center Disaster (Publication)
• Remarks by Dr. Arden L. Bement, Jr, News Media Briefing Dec. 9
• Remarks by Dr. Shyam Sunder, News Media Briefing Dec. 9
• Commerce's NIST Seeks Members for National Construction Safety Team Advisory Committee, Nov. 12, 2002 (News Release)
• Nov. 12 Federal Register Notice
• National Construction Safety Team Advisory Committee Charter
• President Signs Bill Granting Commerce's NIST New Authorities to Investigate Major Building Failure, Oct. 2, 2002 (News Release)
• National Construction Safety Team Act (P.L. 107-231) (.pdf)
• Statement by NIST About Its WTC Investigation and Access to Information from Silverstein Properties
• Presentation at Public Meeting on Proposed World Trade Center Investigation Plan, June 24, 2002
• Webcast Agenda for Public Meeting on Proposed World Trade Center Investigation Plan

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