Thread: Only the facts
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Old 9 Sep 2014 , 05:21 AM   #25
Aemilius
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Re: Only the facts

Here are some facts about WTC 7. The conditions required for gravitational acceleration to occur have been known for centuries (if not longer)....


....and the progressive collapse of WTC 7 (starting with column 79 on the left)....


....that essentially happens all at once....


....is entirely inconsistent with what we empirically know of natural progressive structural failure (defined as the time consuming individual, sequential or simultaneous failure of any number of structural components over time). It's a matter of empirical fact that, even if a giant laser beam were to suddenly vaporize all but the North Face of the building, resulting in the remaining exterior columns immediately beginning to buckle all at once, free fall still would not occur for even a moment. That's because the strength of buckling columns, whether one or a thousand, whether one at a time or all at once (or any combination thereof) won't just go from 100% to 0% when they buckle, they'll go from 100% to 0% while they buckle and that takes.... time.

The mechanism of buckling (a mode of natural progressive structural failure), whether caused by heat....


....or by overloading....


....absolutely cannot create the conditions required for gravitational accelration to occur, it's literally impossible. Some force must be introduced to quickly remove all support from the literally falling visible upper part of the building seen in the video....


Physical principles haven't changed, nor are they likely to. It remains a physical impossibility for the lower part of the asymmetrically damaged building (reportedly three core columns and nine perimeter columns) to have naturally progressively collapsed in any way that could result in the upper part of the building symmetrically descending straight down through itself (NIST probable collapse sequence starting with column 79 circled below) at anything near gravitational acceleration for any period of time....


....and there is absolutely no mode or combination of modes of natural progressive structural failure driven solely by gravity that can ever give rise to the conditions required (below) for free fall to have occurred at any point during it's descent....


The scenario (below) is an absolute physical impossibility....




There is simply no point during a natural progressive gravity driven collapse of a steel frame skyscraper like this where one could say....


"Hold it.... right there! That's the point where all the steel columns and structural components that were supporting the building just a moment ago (with an area greater than that of a football field) will undoubtedly be found to be behaving in a manner very much like air (below left).... so much so that it will take very careful calculation to tell the fall times apart during this period of the ongoing progressive structural failure (below right)"....



It's not only improbable but impossible that the lower asymmetrically damaged part of the building could have naturally progressively collapsed in a way that resulted in the upper part of the building actually accelerating as it descended symmetrically straight down through itself, through the path of greatest resistance (below right), and that driven on solely by gravity it actually continued to accelerate so nearly to gravitational acceleration (below left) as to require very careful calculation for any difference between the two to be detected....



For the 2.25 seconds (eight stories, approximately 105 feet) that the upper part of the building literally fell at gravitational acceleration it cannot have been using any of it's potential energy to crush the building contents, columns and other structural components beneath it and undergo free fall at the same time....


Some other force powerful enough to quickly remove all support from beneath the upper part of the building as it descended must be introduced to explain the observed rate of descent during the 2.25 second period of gravitational acceleration. For the 2.25 seconds that the building iliterally fell at gravitational acceleration, no other force powerful enough to quickly remove all support from beneath the upper part of the building was seen to be introduced from outside the building, and no other force powerful enough to quickly remove all support from beneath the upper part of the building is known to have existed inside the building as an element of any normal function of it's infrastructure.

For a load supported by a column to descend at gravitational acceleration, all support must be quickly removed, there's absolutely no other way. It must be knocked out, pulled out, blown out, vaporized, etc.

Since no eight story tall boulders were seen rumbling through Manhatten that day that could have quickly knocked out the support....


....and no suspicious looking Frenchmen were spotted rigging for verinage (another form of controlled demolition) the night before that could have quickly pulled out the support....


....and no bombs or rockets were seen to be dropped on/fired at it that could quickly blow out all support....



....and no giant laser beams or other secret weapons were being tested in the area that could have quickly vaporized all support....


....and no other force capable of quickly removing support from beneath the upper part of the building existed in the building as a normal function of it's infrastructure (blue below), it naturally follows that whatever the other force was that must be introduced to explain the observed 2.25 seconds of descent at gravitional acceleration, it must have existed inside the building some time before the event....




Someone must show how the other force that must be introduced during or just before the collapse of the building was introduced from outside the building, or that it was already existing inside the building as a normal function of it's infrastructure, or the process of elimination really leaves only one possible explanation for the building's behaviour. Some energetic material of some sort (blue above) powerful enough to quickly remove support from beneath the upper part of the building during the 2.25 second period of gravitational acceleration must have existed inside the building some time before the event.

The explosion model (below) is the only one....


....that can realistically match and empirically be expected to create the conditions (below) that we know must have existed....


....beneath the literally falling visible upper part of the building (below) during its observed largely symmetrical descent at gravitational acceleration for approximately 105 feet in 2.25 seconds....


The undisputed confirmed observation of a significant period of gravitational acceleration....


....means an explosion or other type of event must have occurred that was powerful enough to quickly remove the support from beneath the upper part of the building (below right), either all at once or incrementally in advance of its descent, permitting it to descend at gravitational acceleration for the observed period and under the conditions required (below left) for free fall to occur....


The building was brought down by means of explosives.... that's a fact.

Last edited by Aemilius; 9 Sep 2014 at 17:55 PM.
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