9/11 – The Twin Towers and Common Sense
By Frank Legge, Ph.D.
Before the roof of the North tower of the World Trade Centre became hidden in dust it was falling at a rate which would have brought it to the ground in 10.5 seconds. The
Data published by NIST shows that the steel was not hot enough for the collapse to begin. There are also engineers who have worked out that, even if collapse did begin at the damaged level, it would not continue, but would quickly come to a halt.
Does this not imply that the undamaged, unheated lower part of the building suddenly lost structural strength in some way? Is there any explanation other than explosives that could account for this sudden loss of strength?
No steel framed building has ever collapsed due to fire except on that day, when three tall buildings came down, and they came down impossibly fast.
One of these three buildings, WTC 7, was not hit by a plane and showed little evidence of fire. It took no more than half a second longer than free fall to collapse. This building was occupied by the FBI, the CIA and the DoD. Is it feasible that al-Qaeda could have got past all these sensitive organizations to lay explosives without inside help?
It is instructive to note that there were four other buildings at the WTC which were badly damaged by fire and falling debris but behaved in the usual way: they did not collapse.
To locate peer reviewed papers which substantiate these claims see: http://journalof911studies.com/
Frank Legge
flegge@iinet.net.au
Original article here.