Draft
NIST Reports on the World Trade Center Investigation
NOTE:
The NIST investigation of the WTC 7 building collapse is not yet complete.
The report on the WTC 7 collapse investigation will be released in draft
form for public comment and posted on this web site as soon as it is
available.
 Federal
Building and Fire Safety Investigation of the World Trade Center
Disaster: Final Report of the National Construction Safety Team on
the Collapses of the World Trade Center Tower (DRAFT) This
is a summary report that contains the investigation's principal findings
and recommendations for changes to codes, standards, and practices. (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 1: Design, Construction, and Maintenance of Structural
and Life Safety Systems
(Note: Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
- Executive
Summary
- Full
Report (275 pgs.)
- Draft supporting
technical reports
- Design
and Construction of Structural Systems (Appendices)
- Comparison
of Building Code Structural Requirements
- Maintenance
and Modifications to Structural Systems (Appendices)
- Fire
Protection and Life Safety Provisions Applied to the Design
and Construction of World Trade Center 1, 2, and 7 and
Post-Construction Provisions Applied after Occupancy
- Comparison
of Codes, Standards, and Practices in Use at the Time of
Design and Construction of World Trade Center 1, 2, and
7
- Comparison
of 1968 and Current (2003) New York City Building Code
Provisions
- Amendments
to the Fire Protection and Life Safety Provisions of the
New York City Building Code by Local Laws Adopted while
World Trade Center 1, 2, and 7 Were in Use
- Post-Construction
Modifications to Fire Protection and Life Safety Systems
of the World Trade Center Towers
- Post-Construction
Modifications to Fire Protection, Life Safety, and Structural
Systems of World Trade Center 7
- Documentation
of the Fuel System for Emergency Power in World Trade Center
7
Draft
report on project 2: Baseline Structural Performance and Aircraft
Impact Damage Analysis of the World Trade Center Towers (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 3: Mechanical and Metallurgical Analysis of Structural
Steel (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 4: Active Fire Protection Systems (Note:
Reports are presented in .pdf and may require the latest version of
Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 5: Reconstruction of the Fires in the World Trade
Center Towers (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 6: Structural Fire Response and Probable Collapse
Sequence of the World Trade Center Towers (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
Draft
report on project 7: Occupant Behavior, Egress, and Emergency Communication (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
·
Draft
report on project 8: The Emergency Response Operations (Note:
Reports are presented in .pdf and may require the latest version
of Adobe Acrobat Reader. Download or update Adobe
Acrobat Reader free.)
For access to NIST
publications on past building fire and structural failure investigations,
go to
Building and Fire Research Laboratory Publications Online at http://fire.nist.gov/bfrlpubs.
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