Industry News




04/14/2005

Probable Cause for WTC Collapse Finalized

NIST concludes the most detailed examination of a building failure ever conducted

Contributors: James Earl  
 

On April 5 at a press briefing, the National Institute of Standards and Technology (NIST) presented conclusions on how the World Trade Center (WTC) towers collapsed after the 9/11 terrorist attack, during which two commercial aircraft were flown into the buildings.

 

According to Shyam Sunder, lead investigator for the agency’s building and fire safety investigation into the WTC disaster, “While the buildings were able to withstand the initial impact of the aircraft, the resulting fires that spread through the towers weakened support columns and floors that had fireproofing dislodged by the impacts. This eventually led to collapse as the perimeter columns were pulled inward by the sagging floors and buckled.”

 

The finalization of this sequence, confirms the hypotheses released by NIST last October. Extensive computer modeling and evidence held by NIST (including photos, video, recovered steel, eyewitness accounts, and emergency communication record) support the probably collapse sequence presented.

 

As a result of this investigation and analysis, NIST will release recommendations for improvements to building and fire codes, standards, and practices for public comment in June. For further information, visit (www.nist.gov/public_affairs/releases/wtc_briefing_april0505.htm).

 

Xcel Energy’s Data Center Efficiency program can help data centers and large-scale IT operations improve reliability and energy efficiency.


Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.

When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality. 

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

Xcel Energy’s Data Center Efficiency program can help data centers and large-scale IT operations improve reliability and energy efficiency.


Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.

When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality. 

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.


 
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