Was that building on fire prior to collapsing? If so, for how long? Was the fire on the lower floors of the building? Did large chunks of other collapsing buildings hit it?
How many steel buildings fell before 9/11 and how many fell after? Building 7 only had localized office fires on only a few floors. They also worked quickly to remove all evidence. So investigating was all done using cgi to show you how it happened. 😏
If fire poses no danger to steel, why do building codes require fireproofing of them? Also, the NIST creates test structures and burns them to help understand why this can happen and design changes that can be made to minimize the impact.
Was that building on fire prior to collapsing? If so, for how long? Was the fire on the lower floors of the building? Did large chunks of other collapsing buildings hit it?
How many steel buildings fell before 9/11 and how many fell after? Building 7 only had localized office fires on only a few floors. They also worked quickly to remove all evidence. So investigating was all done using cgi to show you how it happened. 😏
No idea, I never looked.
If fire poses no danger to steel, why do building codes require fireproofing of them? Also, the NIST creates test structures and burns them to help understand why this can happen and design changes that can be made to minimize the impact.
https://www.nist.gov/news-events/news/2020/03/how-fire-causes-office-building-floors-collapse