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originally posted by: [post=20953942]LaBTop
However, the Vierendeel facade plates that were launched from the explosive parts of the collapse initiation fronts ABOVE THEM, were clearly to see in the videos, expelled upwards and then followed huge wide parabolae,
originally posted by: neutronflux
a reply to: MrBig2430
Don't make Labtop angry. LaBTop will just post 509 paragraphs and push your comment back two or three pages. It will mostly be pictures, screen shots, and links from YouTube.
originally posted by: K-PAX-PROT
The big red flag for me is WHY did NIST remove all of its seismic evidence or data completely from the internet after the OP uploaded all of his on the net??
Surely if NIST was watertight and the truth then it would have stood its own ground.
That NIST removed all of that data is a sure sign of nervousness and guilt.
voices.nationalgeographic.com...
A Morning That Shook the World: The Seismology of 9/11
Posted by Kevin Krajick of Columbia University’s Earth Institute on September 9, 2016
Originally posted by: [post=20953942]LaBTop
However, the Vierendeel facade plates that were launched from the explosive parts of the collapse initiation fronts ABOVE THEM, were clearly to see in the videos, expelled upwards and then followed huge wide parabolae,
MrBig2430, posted on Sep. 2, 2016 : This is what I've been asking you to do when you make the claim that exterior columns can be seen to be "blown" upwards and then into a parabolic arc.
Why is it so hard to back your claims?
LaBTop : At 1:17:57 / 1:40:40 in this August 2013 re-published "9/11 Eyewitness" video which was originally made by Rick Siegel in 2004, he and his team (that he abandoned not much later) are looking at the projectile motion of the North Tower WTC1N debris.
Click this link to start that video at that point :
youtu.be...
They first show you, that a cannonball trajectory when shot away horizontally, does not fit the dust cloud form they used, to show you the unnatural NON-gravitational behavior of these dust clouds.
They also show you some chunks falling near to the tower sides that DO act gravitational.
Then they show you that an UPWARD shot cannonball trajectory PRECISELY fits that formed dust cloud.
What they did is find a trajectory that precisely fitted the LOWER and upper boundary of that formed right side dust cloud.
That's however wrong.
They should have used a solid piece of steel or alum-cladding debris, from the moment it came in sight, and followed its unfolding trajectory outwards, then find a fitting cannonball trajectory that covered that outer trajectory part precisely. And then they should have projected that trajectory backwards to find the originating point at the side of that tower. Using horizontally AND upwards shot sample cannonball projectories as comparisons. And thus find the real starting speeds and the force needed to first break those wall pieces loose, then launch them that far outwards.
If it would have been solely the weight of all the situated steel above those pieces , it would have followed the same pattern as the top floors facade steel columns did, that broke away and fell closely to the sides, in the Madrid Windsor Tower fire.
Of course it seems as if the dust clouds at WTC are forming as first upwards and then downwards oriented parabolic trajectories, but that upwards part of the dust its trajectories is partly a result of the immense suction effect on that dust from the collapsing building debris, if those dust trails are taken from a mid-collapse, trajectory-starting point.
There still are (however less explicit in the very beginning of their trajectories) lots of downwards oriented parabolic trajectories of solid steel or aluminum cladding to observe at the onset of the collapse.
And of course also in- and outside the rest of the lower dust cloud movements, those starting trajectories are however quite distorted by the huge suction effect of the thundering down building debris.
Especially in the first part of their trajectories, its trailing concrete dust is sucked back in, and downwards by the loosely compacted center of the huge amount of downwards falling debris pieces.
That's why you need to ONLY calculate with trajectories of solid steel or alum-cladding debris pieces.
Concrete dust weights far less than concrete debris pieces. Which pieces were fairly absent in the debris heaps. The huge dust clouds were spread over the whole S. Manhattan area and part of the Hudson River. So that concrete (dust) had no influence of any importance on the supposed mass that kept the collapse going.
One thing is sure however on 9/11, the far too wide spread out trajectories of multiple metric tons weighting steel debris pieces is enough to show you effects that can only be achieved by explosions.
Such wide spreads will not occur in a natural collapse, as can be observed in the Madrid Windsor Tower fire its natural steel parts collapsing videos.
The burning steel pieces collapsing and breaking off there, from within the burning top floors that were the only ones with non-insulated steel, fell down very closely to the sides of that tower.
And were certainly not catapulted hundreds of yards/meters away from its sides. They buckled, broke and fell down as if tumbling over after breaking away from their original bottom positions. Indicating that the weight of the steel still above them, forced them to first buckle, then break and then topple over the sides. They were however never catapulted away over serious distances.
See for it, my former posts on that Madrid Windsor Tower fire, a few days ago in this thread.
The Twin Towers however, did not topple, but collapsed in on themselves.
Only when such huge buildings completely or partly topple over to one side, can steel end up as far as, in the case of the North Tower, into the SE corner of WFC3.
That was a distance of more than 2 x the width of a side facade of that tower, traveling all over the double lanes of West street and the free space adjacent to WFC3, and all over the full length of the pedestrian North Bridge that lead into the Winter Garden from WTC6 and the NW corner of WTC1N.
You can try to come up with as many excuses as you can, you will never be able to defeat simple Newtonian science laws for that case. That catapulting of a triple Vierendeel steel facade plate, weighing several metric tons, supposedly coming loose from somewhere at the western facade side of the North Tower, into the SE-WFC3 corner was not the result of a natural collapse.
You know, those steel parts had ID numbers pressed in them.
Did they tell us, based on those identification numbers in that triple column piece, stacked high up in the corner of SE-WFC3, after comparing them to the original steel factory orders, and the building's blueprints, where that Vierendeel piece that was stuck in the SE-WFC3 corner originated from.? Or did they not offer that information in the NIST reports.?
The lower it would come from, the more idiotic it would be to keep defending the natural collapse scenarios.
neutronflux : Does LaBTop include scales on the seismographs. I know at work, you can trend a temperature that is flat then zoom in until the single noise looks crazy. If you didn't know the total span was only 0.1 degrees for a 1000 degree process, you would think the control valve was out of control? But you can Photoshop what ever values you want?