flexiblefullpage
billboard
interstitial1
catfish1
Currently Reading

Revised Building Codes Adopted After WTC Attacks Being Implemented

Revised Building Codes Adopted After WTC Attacks Being Implemented


September 8, 2011

U.S. National Institute of Standards and Technology (NIST) code revision recommendations in the wake of the World Trade Center terrorist attacks are being implemented in new high-rise construction including One World Trade Center, the lead building of the new World Trade Center complex.
(http://www.scientificamerican.com/article.cfm?id=twin-towers-forensic-investigation-revise-building-codes)

NIST issued 31 recommendations to improve the safety of high-rises and the emergency responses in the face of major threats, and 23 changes to the 2009 editions of the International Codes and another 17 changes to the 2012 editions, responsive to the recommendations, have been adopted.

New requirements include:

• Buildings taller than 420 feet are now required to include an extra exit stairwell or a specially designed elevator that occupants can use for evacuations.
• Stairwells in buildings more than 75 feet high must now have glow-in-the-dark markings that show the exit path even when lighting is out or dim.
• Spray-applied fire-resistive materials must perform four times more effectively than current requirements in buildings 75 to 420 feet tall, and more than seven times better in buildings taller than 420 feet. 

boombox1
boombox2
native1

More In Category




halfpage1

Most Popular Content

  1. 2021 Giants 400 Report
  2. Top 150 Architecture Firms for 2019
  3. 13 projects that represent the future of affordable housing
  4. Sagrada Familia completion date pushed back due to coronavirus
  5. Top 160 Architecture Firms 2021