Quote Originally Posted by jirisys View Post
How can a building really collapse in such a way after taking less damage than even those bombed buildings on the news?

~Jirisys ()
Concentrated heat above 1470 degrees Fahrenheit weakened the steel floor trusses on the effected floors, causing them to sag and pull against the outer perimeter columns. Eventually the columns snapped and the building fell in on itself. It's clearly visible from multiple different angles.

A bomb generally does not cause the kind of sustained heat for a long enough period of time to weaken steel.