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(... The firemen were concerned that WTC 7 was going to collapse, building nr 5 was in danger of collapse... You hear smaller secondary explosions going off every fifteen or twenty minutes...)
quote: Firefighters and press in the area were told to "get back" because they were going to "pull-it". "Pulling" a building means taking it down with strategically placed demolition charges at the inner support columns so that the building falls in on its own "footprint" as to not damage the other structures in the vicinity. It was a classic bottom-up implosion. You can actually see the demolition charges running up the top 6 floors.(click the same underlined __javascript link on the site)
Building 7 played host to then Mayor Rudy Giuliani's Office of Emergency Management command center, with the 23rd floor built in 1998 as a "bunker" with bullet and bomb-resistant windows, its own water and air supply, the ability to withstand 160mph winds, and a full commanding view of the entire WTC complex. Interestingly, on 9/11 Giuliani didn't bother to put the center to use (even though that's what it was built for) and decided to instead set up a makeshift command center down the street. Seven also served as the command center for the security of the entire WTC complex, which was headed by the President's brother, Marvin Bush, whose contract ended "coincidentally" on 9/11. WTC7's other tentants included the IRS, CIA, Secret Service, FBI, Department of Defense, and the SEC. It has been reported that several banks involved in sending money to the 9/11 hijackers had their offices there, and important files pertaining to the Enron investigation were stored there as well.
Originally posted by LaBTop
I see some black spots, nothing else, in the center.
Not at all something I could hang a conclusion on, like you 2 hang on.
Originally posted by STolarZ
What caused that "avalanche" of debris ?
Since when collapsing building is "ejecting itself" in all directions that far away from building ?
Originally posted by deltaboy
Since the bottom part of the building is trying to resist the top part that are collapsing, its bound to go spread outwards.
Originally posted by bsbray11
If that's true, then why didn't the collapse slow down?
Jedi Master, concerning the FIRST video frame picture you grabbed from this video link of yours :
www.youtube.com...
that is HIGHLY suspicious that this YouTube video exerpt from a much longer video, started exactly with the ONLY single frame you see that straight vertical side of that black spot in the left WTC 7 part of the picture there, insinuating that you see a broken out building face there.
And it is not to be seen in any other frame of that partial video.
Secondly, the other photo shows the well known roof parapet damage already known for years from FEMA and NIST diagrams. It is certainly not a "20 stories high, 10 meter deep hole in the CENTER of the south face" of WTC 7.
Originally posted by deltaboy
How much do you think all those materials weight coming down?
Originally posted by bsbray11
A small fraction of the total mass of the building. It should have slowed down.
And that cap of falling floors quickly disintegrated and came over the sides of the building as it collapsed anyway.
Originally posted by bsbray11
You're right, it wasn't built to collapse.
And the floors on top, again, were a small fraction of the total building mass. I don't know where Superman comes into this; all you have to do is count the floors (try WTC1) and remember that the uppermost floors were lighter for structural reasons.
A falling mass represents kinetic energy. Right? It takes a lot of energy to crush through hundreds of thousands of tons of steel and concrete. Every bit of the material crushed takes a toll on the kinetic energy of the falling mass. And every time some of the falling mass falls over the edge (ultimately ~90% of it), that's less kinetic energy available in the first place.
Now, throughout all of this, whether or not you believe there was enough kinetic energy to fully collapse all the floors underneath, you MUST admit (if you have ANY brains about you AT ALL) that ENERGY MUST HAVE BEEN "SPENT" ON EVERY INCH OF BUILDING CRUSHED. That is LESS ENERGY AVAILABLE TO CONTINUE CRUSHING THE REMAINDER OF THE BUILDING. Visible result? DECERATION OF THE COLLAPSE WAVE.