Pigpie the liar....
Nice resume' you got there Professor
Nice avoidance technique you got vulgar tommy!Let's just examine the logic of vulgar-tommy's claim of concrete reinforcement as well.
The prevailing theory as to why the collapses progressed past initiation is that connections between the core and perimeter columns and the truss assemblies could not withstand the dynamic forces imparted on them by the collapse front which was accumulating mass right from initiation.
This is supported by videos which show the cores falling after the collapse of the floors as thousands upon thousands of tons of debris under dynamic force eventually caused the collapse of the cores as well.
So if the cores were concrete reinforced, how would the collapses have been different?
Reinforcement of core components would've have no effect on the connections which facilitated progressive collapse.
So vulgar-Tommy's point is, as always, irrelevant and ignorant.
Now vulgar may come back claiming the concrete reinforcement encapsulated the connections between the core and the trusses but that would be yet another massive fail as the connections were integral to transferring wind load to the visco-elastic dampners where such forces were absorbed.
Hence, the connections requires movement not afforded by concrete reinforcement.
But I'm sure the truck drivers exam in Ma covers all that...
So ya wanna compare educations truck driver?