Originally Posted by MattNelson
On the contrary, there was a huge hole on the south wall of WTC 7 and WTC 7 began to buckle, not to mention that firefighters knew the building was going to collapse as they continued to hear the sounds of structural weakening within WTC 7. FDNY made the prudent decision to get people out of WTC 7 and that decision is what saved lives.
The hole on the south wall was massive and as a result, structural loads were redistributed among other structural members, which eventually weakened due to fire. In the final seconds of its collapse, WTC 7 tilted toward the south.
Figure D-14 WTC 7 W14 column tree with beams attached to two floors
Figure D-17 Seat connection in fire-damaged W14 column from WTC 7