1. Zett eL

    Zett eL Member

    Maybe its a matter of translation... Again: I´m german.
    In my understanding, there is a difference between "falling off", "being ejected", "tipping over/away" and "peeling out".
    To me it seems impossible to determinate which of those happened to the facade.
     
  2. Mick West

    Mick West Administrator Staff Member

    What do you think is happening to the section I circled in red, above?
     
  3. Mick West

    Mick West Administrator Staff Member

    The thread is about the claim that sections were "elected laterally". That means they had an initial horizontal velocity away from the building, as if they were shot out of a cannon.

    The general agreement here is that there are no examples known that cannot be explained by a gravity driven collapse. If you'd like to point to one then please try to produce a frame by frame analysis showing the trajectory.
     
  4. Oystein

    Oystein Active Member

    I am German, too.
    You askked for evidence of exterior columns "peeling out" - which is the same, in my understanding as "tipping over/away", but different from "falling off" or "being ejected".

    This thread is about "Multi-ton steel sections ejected laterally", and discussion of wall segments tipping/toppling/peeling outwards in large, connected sheets is on-topic only insofar as this rules out that these same segments were "ejected laterally".

    The video I posted shows, among other things, a fairly rigid wall section, many stories high, on the right side of the tower rotating about a pivot that's hidden behind the dust cloud but can be estimated to be near the original perimeter, and thus falling over/tipping/toppling like a tree. Do you see what I mean?

    Here, let me help you with screenshots and red circles around the wall segment I am talking about:

    slomo1.
    slomo2.
    slomo3.
    slomo4.
     
  5. deirdre

    deirdre Moderator Staff Member

  6. toutdoubt

    toutdoubt New Member

    Anyway I can get those small images bigger? the equations etc. Thanks!!
     
  7. Manooper

    Manooper New Member

    I've come to the same conclusion, that is the pieces are clearly peeling away from the towers, rather than being ejected out. Given the enormous height of the towers, it should be expected that pieces end up hundreds of feet away as the sides fall away.
     
    • Agree Agree x 2
  8. Jeffrey Orling

    Jeffrey Orling Active Member

    google free fall... the graphics was from the WWW and I don't seem to have the file anymore.
     
  9. Mick West

    Mick West Administrator Staff Member

    It does not seem to exist anywhere. Perhaps it was clipped from a pdf, or from a private forum.

    The diagram in the middle seems to just be a derivation of range (R) from height (h) and eject velocity (Ve) (along with time to fall (t) and impact vertical velocity (Vi). I've roughly recreated it here:
    Metabunk 2018-11-15 06-29-44.