Posted by Tomski on September 5, 2019, 1:40 pm, in reply to "Finally it's out ..."
From a quick scan this jumps out ...
Near-Simultaneous Failure of Every Column Explains the Collapse
The secondary conclusion of our study is that the collapse of WTC 7 was a global failure involving the near-simultaneous failure of every column in the building.
This conclusion is based primarily upon the finding that the simultaneous failure of all core columns over 8 stories followed 1.3 seconds later by the simultaneous failure of all exterior columns over 8 stories produces almost exactly the behavior observed in videos of the collapse, whereas no other sequence of failures that we simulated produced the observed behavior. We cannot completely rule out the possibility that an alternative scenario may have caused the observed collapse; however, the near-simultaneous failure of every column is the only scenario we identified that was capable of producing the observed behavior.