Some Misunderstandings Related to WTC Collapse Analysis

[Albert Doyle]

[

Tony, you said the initiation of a ROOSD would require five floors of core columns and their support structure to vanish to provide the sufficient force. I believe Jeffrey, said it would require only one floor.

That is helpful.

If I read it correctly Tony said it would take the mass of a 5 storey section to break the static resistance of the intact building below it. What static resistance means is simply the structural strength of the building below in its total state or stasis. When I pointed-out to him that a 12 storey section clearly fell on the rest of the building in the North Tower he failed to give a straight answer.