U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PUBLICATIONS

June 2004 Progress Report on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST SP 1000-5)

Published

Author(s)

Sivaraj Shyam-Sunder, C Sawyer

Abstract

Provides details of the technical progress made since the May 2003 progress report on the World Trade Center (WTC) Investigation. The report includes a comprehensive summary of interim findings and accomplishments for each of the independent investigation objectives. Highlights include key visual observations on building, fire, and smoke conditions in the WTC towers and WTC 7 from the large collection of photographic and video images; progress on building and fire code analysis; major progress in building comprehensive models for analyzing the most probable collapse sequence from aircraft impact to collapse initiation. Progress has also been made in experimental/field work to analyze the recovered WTC steel, fire dynamics and thermal modeling, and fire endurance testing as well as the investigation of the design, capabilities, an dperformance of the active fire protection systems for the towers and WTC 7. First-person interviews have been completed, and early results of data analysis are presented; an analysis of emergency communications is also included. Interim reports are included on the inventory and identification of the recovered steel from the towers and on the study of the contemporaneous structural steel specifications.
Citation
Special Publication (NIST SP) - 1000-5
Report Number
1000-5
NIST Pub Series
Special Publication (NIST SP)
Pub Type
NIST Pubs

Download Paper

https://doi.org/10.6028/NIST.sp.1000-5v1

Keywords

building research, building technology, collapse, evacuation, fire research, fire service, metallurgy, World Trade Center
Buildings and Construction, Fire and Disaster and failure studies

Citation

Shyam-Sunder, S. and Sawyer, C. (2004), June 2004 Progress Report on the Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST SP 1000-5), Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.sp.1000-5v1 (Accessed December 3, 2024)

Issues

If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.

Created June 30, 2004, Updated November 10, 2018