Construction strategies to avoid progressive collapse

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The Skyline Plaza Apartments in Fairfax County Va after a 1973 progressive collapse that occured during construction of the 24th floor. The collapse involved the full height of the tower and falling debris also caused the horizontal progressive colla ...
The Skyline Plaza Apartments in Fairfax County, Va after a 1973 progressive collapse that occured during construction of the 24th floor. The collapse involved the full height of the tower, and falling debris also caused the horizontal progressive collapse of an entire parking garage under construction adjacent to the tower. Fourteen workers were killed, 34 workers were injured. Credit: Hai S. Lew/NIST

The 1995 terrorist attack on the Oklahoma City Alfred P. Murrah Federal Building heightened concern on the vulnerability of multi-story buildings to “progressive collapse,” the spread of an initial local structural failure by chain reaction that results in the collapse of an entire structure or a disproportionately large part of it. The National Institute of Standards and Technology recently issued a guide to help owners, engineers and building officials avoid such collapses through prudent planning and design of structures. The guide also summarizes national and international best practices for designing buildings resistant to progressive collapse of buildings.


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