Reply To: Engineering Prof releases draft report on 9/11 collapse of WTC Bldg 7 in NYC


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#46875
Clark
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I have suspected for some time that WTC7 may have been brought down by emergency demolition, proposed and executed by a small team of very dedicated and determined firefighters and their colleagues on the day of 9/11. I expect that such demolition was not officially sanctioned, and was executed covertly while the authorities pretended not to know. There are several lines of circumstantial evidence which strongly suggest this; I will enumerate them later if requested.

I know that my opinion will be most unwelcome among those who promote the theory that the Twin Towers were pre-rigged with explosives before 9/11. I remind such Twin Tower demolition theorists that my opinion converges with that of the late Danny Jowenko, Dutch expert demolition engineer.

I have spent many hours studying the structure of the Twin Towers, and painstakingly watching the videos of the collapses, often frame-by-frame. The claim that the collapses “broke Newton’s laws” are entirely without merit. The collapses proceeded entirely in accordance with Newton’s laws of motion (in which I am sufficiently competent); indeed, the manner of the collapses could have been predicted by application of Newton’s laws.

Chandler’s “Downward Acceleration of WTC1” theory applies only to a contiguous block of material, not to a lattice of steel supporting thousands of tonnes of concrete in a structure that was over 90% empty space. Judy Wood’s “arguments” are based on a single misleading statement and are probably meant as a parody of Chandler’s; considering her qualifications and expertise it seems inconceivable that she intends them seriously.

Likewise, Gage’s claim about the Twin Towers “collapsing through the line of most resistance” is also without merit. The line of most resistance was the buildings’ cores, which the video record shows to have stood the longest after collapse initiation. Next strongest were the perimeters, which took second longest to fall. The collapses proceeded fastest through the wide-span floor assemblies, occupying the space between core and perimeter and void of vertical support structure, the weakest line of descent.

In any case, the bottom-up collapse of WTC7 tells us nothing of the top-down collapses of the Twin Towers, and the latter appear perfectly natural (under the highly exceptional circumstances) whereas the former does not.

Having said all that, WTC7 was an absolute pig’s ear of a building; look at the engineering diagrams if you don’t believe me. It looked like it had been cobbled together out of left-over parts, it was built on caissons laid years previously intended for a building of less than half the height and less than a third of the weight, and it had an elaborate truss arrangement to straddle a pre-existing electricity sub-station. Whoever brought this down at such short notice and so relatively symmetrically has my deep respect.
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Promoters of Twin Tower demolition theory are promoting entirely the wrong message about the collapses. The Twin Towers were disasters waiting to happen, as many suspected at the time of their construction. Their sprinkler systems were inadequate to control any fire greater than one quarter of one floor, and their evacuation facilities were criminally inadequate; some steel components had fire protection rated at only 90 minutes, whereas full evacuation was known to require over three hours – tens of thousands of people would need to escape via just three tiny staircases.

The real message of the Twin Tower collapses is that the commercial system cares not a jot about people’s lives or safety, and builds fragile structures prone to catastrophic, runaway failure. This message has indeed been buried by the corporate media; the US and indeed global economy would itself collapse if staff realised and refused to work in such arrogantly ambitious phallic symbols.