9/11 Allgemein
05.02.2014 um 10:45@Rho-ny-theta
@McMurdo
@Timotheus
Hier mal ein Beispiel für die Art in der Truther Scientists arbeiten: (Ausschnitt aus dem Text)
http://scienceof911.com.au/the-argument/bazant/ (Archiv-Version vom 25.01.2014)
Ich habe dort einen Kommentar hinterlegt, mal sehen ob der freigeschaltet wird:
@McMurdo
@Timotheus
Hier mal ein Beispiel für die Art in der Truther Scientists arbeiten: (Ausschnitt aus dem Text)
http://scienceof911.com.au/the-argument/bazant/ (Archiv-Version vom 25.01.2014)
As the second impact is approached the situation is different. We now have the columns of two storeys buckling. When these columns start to buckle, the two floors, 97 and 98, together with the remnants of the columns previously holding them apart, will form a mass of material which Bazant likes to call “zone B.” This material will be half way between the next two floors, 96 and 99. It is important to note that these two sets of buckling columns will be involved in progressive collapse, “everything will not be instantaneous,” (to borrow a phrase from Shyam Sunder, NIST’s team leader). During this collapse the force required to continue the collapse will be approximately equal above and below zone B. What this implies is that zone B will remain half way between floors 96 and 99 throughout this stage of the collapse.Wer erkennt den himmelschreienden Unsinn?
Here is where Bazant applies a conjuring trick. He asserts that zone B will fall in contact with the remainder of the top section and will provide a cushion, thus protecting it from further impact damage. This sounds reasonable until one recalls that zone B was not in contact with the top section but half way between the sections. Its cushioning effect will thus be felt equally by both sections. Newton’s third law will of course apply at this impact, as it did at the first. The columns above and below zone B will again collapse equally. At each subsequent impact exactly the same thing will happen and the falling top block will be shortened by one storey with each impact. As there were only 12 storeys in the top section to begin with, the collapse must soon come to an end, due to its weight diminishing and the cushioning effect of zone B increasing.
Ich habe dort einen Kommentar hinterlegt, mal sehen ob der freigeschaltet wird:
Your comment is awaiting moderation.Das sind also die Truther - Wissenschaftler
February 5, 2014 at 5:32 pm
“Here is where Bazant applies a conjuring trick. He asserts that zone B will fall in contact with the remainder of the top section and will provide a cushion, thus protecting it from further impact damage. This sounds reasonable until one recalls that zone B was not in contact with the top section but half way between the sections. Its cushioning effect will thus be felt equally by both sections. Newton’s third law will of course apply at this impact, as it did at the first. The columns above and below zone B will again collapse equally. At each subsequent impact exactly the same thing will happen and the falling top block will be shortened by one storey with each impact. As there were only 12 storeys in the top section to begin with, the collapse must soon come to an end, due to its weight diminishing and the cushioning effect of zone B increasing.”
This is incorrect.
First the assumption that zone b will be formed halfways between the lower and upper floors has no support whatsoever. Why should it? It builds up top down, the rubble stays permanently in contact with the upper block. And it adds to the weight and momentum of the upper block
Furthermore the upper block is tilted, therefore the columns of the upper block mostly do not hit the corresponding columns of the lower block, hit the much weaker floors, the floors in turn bend the columns, thereby bending an therefore weakening them.
Nd finally the overall forces cannot be balanced because then the upper block would not accelerate.
You are correct in that there will be some destruction to the upper block, but much less than you assume.
And this:
” As there were only 12 storeys in the top section to begin with, the collapse must soon come to an end, due to its weight diminishing and the cushioning effect of zone B increasing.”
is of course complete nonsense because, as I stated, the increasing rubble “cushion” adds to the weight and momentum of the falling part. Gravity is acting on the cushion as well, you should know.
