Lauren Johnson Wrote:I assert WTC 1.2, and 7 came down by controlled demolition. This is a complex problem. If I had expertise in the mechanical engineering of high rise buildings, I would be able to solve the problem to my satisfaction. But I am not. I have to depend on others. Architects and Engineers for 9/11 Truth put for a very persuasive argument to push back against the NIST reports. I buy it.
But we have Jeffrey Orling who also has credentials giving a counter argument with regard to WTC 1 and 2. How am I to decide? They both from my layman's position could be correct. My sense is that AE911 has the strong edge in my eyes, but Jeffrey indeed has credentials. He could be right.
This brings us to WTC 7. Jeffrey's arguments regarding WTC 7 just have never held water, even from my layman's position. The visual power of its symmetrical collapse requires a strong argument to counter the obvious conclusion that there was CD. The David Chandler/Ashleigh Banfield video is case closed. Controlled demolition.
Therefore, if there is controlled demolition in WTC 7, the case for CD in WTC 1 & 2 is near 100%. Case closed.
Interesting logic there... sort of weighing the supposed experts you've looked at or read and rendered your decision.
Both AE911T and I and many others dispute the NIST explanation of the girder walk off at col 79 on the 13th flr.
So now what explains the movements?
AE in their presentation and the famous vid of FF actually DOES NOT include the movement BEFORE the release of the facade which included the drop of both the East and West Penthouses and measured swaying of the tower in an east-west direction. So whatever the time of the drop of the facade... the collapse clearly took longer and indicates that the INSIDE was not "there" or had collapsed by the time the 7 second collapse vid period. This is deceptive.
AE's explanation for the 7 second, 108 foot 8 story drop is that all 81 of the columns (24 core) and 57 perimeter) were "CDed" or made to disappear in an instant so there was nothing to resist the FF drop. Of course this is not specific as to which 9 floors and at the lowest level there actually about 15 (don't recall the actual #) of columns fewer than above the 7th floor. The 81 col cofig began at floor 8 108' above grade. They don't say if the think it was floors 8-16 which were CDed... or not.
The famous video also shows a very pronounced inward bowing of the north curtain wall which extended the entire width of the lot. One sees NO glass breaking and the IB is like a folding screen... But how could it fold inward if there were spandrel beams and floors behind that curtain wall? The answer is of course, the curtain wall cannot bow inward with or without breaking the glass with spandrels and floors behind. Ergo there were none when the curtain wall was dropping... meaning that the entire inside on the north side was gone before the drop and we are seeing JUST the curtain wall(s) and not the building drop.
And using moire analysis it has been determined that the penthouse drop all the way down all visible floors not merely a story or two as if there was some failre just below the PH.
There were other observation and events which support TTF, a theory which AE has not even considered or critiqued. TTF 1 end 2 which I believe are where it began happen to be below 40 stories below the east penthouses... and the entire curtain wall opposite the core on the north side seen on the vid... was supported on the ends of cantilevers 8 stories above grade! How bout that! The other end (south) of these 8 cantilever griders rested on the core's north side which had a e-w girder connected to the 8 columns of the core. At the west side was TT3 carrying the last girder's south end.
There WERE diesel day tanks on floors 6 or 7 adjacent to TT1 and the stair which collapsed after an explosion which WAS witnessed by Jennings and Hess at 10am happened to also be between these two massive transfer structures. YES there was an explosion at 10 am... but what was it? Gas? Diesel fuel? Leaked transformer oil (explosive)... flamable fumes? Within those TTs were all the electrical power equipment for 7, both mains and back up and it all sat over the 3 story high massive power transformers of the Con Ed substation which was part of the grid supply power to lower Manhattan and all the WTC. Con Ed reported that when the plane hit at 8:58 they lost 13 feeders which were obviously picked up by other sub stations in the grid. 7 was on back up power shortly after Jennings and Hess arrived at 7 just after 9am. The loss of power destroyed the wet sprinkler system's ability to pressurize and a water main break made fire fighting impossible with standpipes.
Just before 7 dropped there was a massive flare out from the lower floors on the NW side... much like what is seen in the twin as the moment of release.
Of note is that the building's Engineer Irwin Cantor stated in 2002 that he believed the tower came down because the massive transfer trusses were weakened by heat from diesel fires. He was not specific of the precise mechanism. ASCE stated in 2002 to congress that they believe the connections in the trusses might have failed first and that NIST should study them in their coming investigation. NIST did not. NIST stated that there was nothing of interest below floor 8. Ha?
Could devices have destroyed the connections? To destroy the massive truss members the bombs or devices would be extremely loud... and nothing like the boom on the Banfield tape which is likely the truss steel dropping and the mech floors coming down on Con Ed.
There is a lot more to support the TTF theory... one which no one wants to seriously consider except a few at Pfor911T... but they refuse to consider that heat could possibly weaken steel... they think it was some sort of eutectic attack device (no evidence for this.... but it doesn't make noise)
There are many reasons why NIST produced the nonsense the did. There were many questionable decisions in the design of 7 which led to it collapsing as it did. They decided not to open up that can of worms... essentially protected the developers, Con Ed, Guiliani, the engineers and PANYNJ, NYC planning commission and so forth. Cantor now sits on NYC City Planning commission.
7 likely came down from failed connections on the transfer structure... and if so it would pretty much nail the fact that all three towers came down without CD.