bill smith
Philosopher
- Joined
- Feb 14, 2009
- Messages
- 8,408
Did you know that in WTC1 only 15% of the supporting columns .core and perimeter wre destroyed by the plane. Only two of the 47 massive core columns were taken out.Readers understand very well what I mean:
In a verinage demolition, one intermediate story has its structural elements removed by force, sending the top stories falling on the story below, and triggering an avalanching collapse all the way down to the ground.
In the twin towers, one intermediate story had its structural elements removed by force, sending the top stories falling on the story below, and triggering an avalanching collapse all the way down to the ground.
Only difference really is the force applied to the failing story. In one case, it's cranes, pulleys or explosives, at the twin towers it was airplanes and fires.
So given that 85% of the columns between the upper and lower parts were fully intact do you still consider that enough ' structural elements were removed by force ' to allow the free collapse of the upper block onto the lower ?
Do you not think that the steel would have slowly softened to the point where the top lowered itself gently onto the lower block.
Of course if this happened then there was next to no dynamic force applied on the lower block which in turn means that collapse arrest should have happened immediately.