NIST (teknologi)

Efter terrorangrebet den 11. september 2001 fik NIST til opgave at undersøge de bygninger i World Trade Center, der kollapsede som følge af angrebet.

Formålet med undersøgelserne var:

• At undersøge bygningskonstruktionen, hvilke materialer der var blevet anvendt, og de tekniske betingelser, der bidrog til resultatet af WTC katastrofen.
• At underbygge forbedringer i bygningsdesign, -konstruktion, -vedligehold, og -benyttelse; forbedrede værktøjer og retningslinier for industri- og sikkerhedspersonnel; anbefalede ændringer til gældende regler, standarder og praksis; og forbedret offentlig sikkerhed.

De specifikke formål var:

• At fastslå hvorfor og hvordan WTC 1 og WTC 2 kollapsede efter flyenes sammenstød og hvorfor og hvordan WTC 7 kollapsede.
• At fastslå hvorfor skader og dødsfald var så høje eller lave, afhængig af lokation, inklusive alle tekniske aspekter af brandsikring, adfærdsmønstre hos de tilstedeværende, evakuering, og katastroferespons.
• At fastslå hvilke procedurer og retningslinier der blev anvendt i design, konstruktion, udførelse og vedligeholdelse af WTC 1, 2 og 7.
• Identificere, så specifikt som muligt, områder i nuværende bygnings- og brandreglementer, standarder og retningslinier der skal revideres.

Kilde: World Trade Center Disaster Study, NIST

Høringer og pressemøder

November 20, 2008 – WTC 7 Final Reports Released

• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

August 26, 2008 – WTC 7 Technical Briefing

• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

August 21, 2008 – WTC 7 Press Briefing

• Statement by Dr. S. Shyam Sunder, Lead Investigator (PDF)
• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

September 8, 2006 – New York City Council Joint Meeting

• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

October 19, 2005 – 4th Annual Congress on Infrastructure Security for the Built Environment

• Presentation by Dr. James Hill, Building and Fire Research Laboratory Director (PDF)

June 23, 2005 – Public/Media Briefing

• Remarks by Dr. Dr. Hratch Semerjian, Acting NIST Director (PDF)
• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

September 13-15, 2005 – Technical Conference

• Agenda (PDF)
• Presentations

April 5, 2005 – Public Briefing

• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)
• Presentation – Introduction to NIST’s World Trade Center Investigation (PDF)
• Presentation – Analysis of Collapse of WTC 1 and WTC 2 (PDF)
• Presentation – Collapse Sequence of WTC 1 and WTC 2 (PDF)
• Presentation – Collapse of WTC 7 (PDF)
• Presentation – Analysis of WTC Towers’ Baseline Performance (PDF)
• Presentation – Life Safety – Evacuation, Emergency Response, Active Systems (PDF)
• Presentation – Building and Fire Safety Procedures and Practices (PDF)
• Presentation – Approach to Recommendations (PDF)

June 8, 2005 – NFPA World Safety Conference & Exposition, Las Vegas, NV

• Presentation by Dr. S. Shyam Sunder and Dr. William L. Grosshandler, Lead Investigator and Investigator (PDF)

September 9, 2004 – Chicago Committee on High-Rise Buildings

• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

February 12, 2004 – Public Meeting

• Agenda (PDF)
• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)
• Full Transcript (PDF)

October 23, 2003 – Workshop to Review Reference Structural Models of the WTC Towers Developed by LERA

• Minutes (PDF)

September 17, 2003 – Media Briefing

• Remarks by Dr. Jack Snell, Director, Building and Fire Research Laboratory (PDF)
• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)
• Presentation by Jason Averill, Investigator (PDF)
• Presentation by J.R. Lawson, Investigator (PDF)

May 7, 2003 – News Briefing

• Presentation by Dr. Arden L. Bement, Jr., NIST Director (PDF)
• Presentation by Dr. S. Shyam Sunder, Lead Investigator (PDF)

April 8, 2003 – Public Briefing

• Presentation by Jason Averill, Investigator (PDF)

December 9, 2002 – News Briefing

• Remarks by Dr. Arden L. Bement, Jr., NIST Director (PDF)
• Remarks by Dr. S. Shyam Sunder, Lead Investigator (PDF)

August 21, 2002 – News Briefing

• Remarks by Dr. Arden L. Bement, Jr., NIST Director (PDF)
• Remarks by Dr. S. Shyam Sunder, Lead Investigator (PDF)

June 24, 2002 – Public Meeting

• Agenda and recorded webcast
• Statement – NIST Open Meeting Scope of Interviews – Key Points for Pending NIST Investigation, Monica Gabrielle, Co-Chairperson, Skyscraper Safety Campaign (PDF)

Kommentarer fra offentligheden

• Public comments received by NIST August 21 – September 15, 2008 (PDF)
• Transcript of NIST Public Meeting in New York City – February 12, 2004 (PDF)

FAQs

• Questions and Answers about the NIST WTC 7 Investigation (Updated 12/18/08)
• NIST Investigation of the World Trade Center Disaster FAQs – Supplement (December 14, 2007)
• NIST Investigation of the World Trade Center Disaster FAQs (Aug. 30, 2006)
• National Construction Safety Team Act
• NIST’s Investigation of the Sept. 11 World Trade Center Disaster–FAQ
• NIST’s World Trade Center Investigation Improving the Future Safety of Buildings, Occupants, and First Responders
• NIST Tests Provide Fire Resistance Data on World Trade Center Floor Systems
• NIST Building Fire and Structural Failure Investigations
• NIST Technologies Help Improve Homeland Security
• Fire, Smoke, and Simulations

Rapporter

• Undersøgelse af World Trade Center 1 og 2

• Undersøgelse af World Trade Center 7