atavisms said:
"WTC7 was a highly supported structure with large redundancies built into it.
We know it experienced freefall acceleration for the first 8 storeys or 100' of it's sudden and symmetrical descent -despite NIST's attempt to obfuscate this fact. It is a well known fact of physics that this would not have been possible without the support structures being removed almost simultaneously."
grandmastershek said:
"Wrong....you believe this, we know its not true.
1. it wasn't sudden as the FDNY & the visual evidence prove it had undergone structural failures all afternoon.
2. It wasn't symmetrical."
Ongoing damage from migrating office furnishing's fires does not equate to structural failures in a concrete and steel building.
The FDNY proved no such thing as ongoing structural failure and had they, the NIST would have mentioned such proof in their final report.
Visual evidence did not show structural failure until the time of collapse.
By your precise expectation of what constitutes a symmetrical collapse
grandmastershek, they have never existed.
No professional can really claim to have created a perfectly symmetrical controlled demolition.
I think the collapse of WTC7 was damn close to symmetrical and was close enough to satisfy a realistic definition.
To address the first point in your misguided statement,
"Wrong....you believe this, we know its not true." made in response to;
atavisms said:
"WTC7 was a highly supported structure with large redundancies built into it.
We know it experienced freefall acceleration for the first 8 storeys or 100' of it's sudden and symmetrical descent -despite NIST's attempt to obfuscate this fact. It is a well known fact of physics that this would not have been possible without the support structures being removed almost simultaneously."
Dr. Shyam Sundar, the main spokesperson for the NIST, speaking about the NIST Final Report on the Collapse of WTC7 provided all the argument necessary to support
atavism's point.
From the Aug.26, 2008 NIST Technical Briefing;
Moderator re-phrased question: "Any number of measurements using a variety of methods indicate the northwest corner of WTC 7 fell with an acceleration within a few percent of the acceleration of gravity. Yet your report contradicts this, claiming 40% slower than freefall based on a single data point."
Dr. Shyam Sundar: "Well...um...the...first of all gravity...um...gravity is the loading function that applies to the structure...um...at...um...applies....to every body...every...uh...on...all bodies on...ah...on...um... this particular...on this planet not just...um...uh...in ground zero...um...the...uh...the analysis shows a difference in time between a free fall time, a free fall time would be an object that has no...uh... structural components below it. And if you look at the analysis of the video it shows that the time it takes for the...17...uh...for the roof line of the video to collapse down the 17 floors that you can actually see in the video below which you can't see anything in the video is about...uh... 3.9 seconds. What the analysis shows...and...uh...the structural analysis shows, the collapse analysis shows that same time that it took for the structural model to come down from the roof line all the way for those 17 floors to disappear is...um... 5.4 seconds. It's...uh..., about one point...uh...five seconds or roughly 40% more time for that free fall to happen. And that is not at all unusual because there was structural resistance that was provided in this particular case. And you had...you had a sequence of structural failures that had to take place and everything was not instantaneous."
In an about face, the NIST, in their final report released in November 2008, finally admitted to a period of freefall. They did their own measurement with a point near the center of the roof line and came up with an acceleration of 9.81 for approximately 2.25 sec. Their report did not, however, face the consequences of this acknowledgment: that ALL RESISTANCE was instantaneously removed across the width of the building, supporting pre-planted explosives as the cause of the collapse.
MM
so how does he know it was molten "highly tempered" steel?
