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Has Anyone Seen A Realistice Explanation For Free Fall Of The Towers?

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delphi_ote said:
Chris where is the concrete core?
[qimg]http://i71.photobucket.com/albums/i133/delphi_ote/30KittenFight.jpg[/qimg]
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It might be in this shoe!

9490455687724e957.jpg


Or maybe this sink!

94904556878f8963d.jpg


Nope, no concrete cores, and no tasty mousies either, more's the pity!

Now I'm just annoyed at you.

94904555496e8385d.jpg
 
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"Wait, ...............we see the concrete core"

100_0725.jpg


"Oh no, .............. we got locked up for seeing it."

100_0705.jpg
 
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orphia nay said:
Bugger, I deployed the pancake bunny before remembering I had one question.

Bugger, I deployed the pancake bunny before remembering I had one question.

Originally Posted by Christophera
Does this look like a floor? Does it look like steel core columns?
Does it look like the steel column core with some gyprock walling remaining and a lot of dust?

Does it look like the steel column core with some gyprock walling remaining and a lot of dust?
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second that, score is now 2 to 1
 
Garb said:
Obviously you have contradicted yourself, because there must be concrete in that picture since it is the LOWEST FLOOR.
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and chris has stated that they built the core up from street level, then built the exterior structure around and above it (why they reversed the build order is beyond me though)
 
defaultdotxbe said:
and chris has stated that they built the core up from street level, then built the exterior structure around and above it (why they reversed the build order is beyond me though)
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Nope, it's the other way around, actually. First the outside and the floors were build (attached to some... hell, I don't know, invicicore I guess) and the concrete core followed 7 floors behind the rest of the building.
 
Yamasaki and engineers John Skilling and Les Robertson worked closely, and the relationship between the towers' design and structure was clear. Faced with the difficulties of building to unprecedented heights, the engineers employed an innovative structural model: a rigid "hollow tube" of closely spaced steel columns with floor trusses extended across to a central core. The columns, finished with a silver-colored aluminum alloy, were 18 3/4" wide and set only 22" apart, making the towers appear from afar to have no windows at all.
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http://www.skyscraper.org/TALLEST_TOWERS/t_wtc.htm

Is this a site bribed by the government?
 
Garb said:
http://www.skyscraper.org/TALLEST_TOWERS/t_wtc.htm

Is this a site bribed by the government?
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Yes, probably created by the infiltrators, they do sloppy work. I have reason.

Yamasaki did not come in until Robertson had already designed the whole center in concept. Robertson brought Yamasaki in. All Yamasaki did was design the core and certify the building safe. Worthington, Skilling, Helle and Jackson were the conceptual architects and requested because they brought him in. Yamasaki did request Emery Roth & Sons finish engineering specs for construction of the floors but Yamasaki designed the steel reinforced concrete tube.

I have an incomplete set of plans from Skilling and Yamasakis name is on them but it is no more than a name at that point. He hadn't even tested and rejected the original steel core columns Robertson had concieved yet.

Construction of a world trade facility had been under consideration since the end of WWII. In the late 1950s the Port Authority took interest in the project and in 1962 fixed its site on the west side of Lower Manhattan on a superblock bounded by Vesey, Liberty, Church and West Streets. Architect Minoru Yamasaki was selected to design the project; architects Emery Roth & Sons handled production work, and, at the request of Yamasaki, the firm of Worthington, Skilling, Helle and Jackson served as engineers.

The Port Authority envisioned a project with a total of 10 million square feet of office space. To achieve this, Yamasaki considered more than a hundred different building configurations before settling on the concept of twin towers and three lower-rise structures. Designed to be very tall to maximize the area of the plaza, the towers were initially to rise to only 80-90 stories. Only later was it decided to construct them as the world's tallest buildings, following a suggestion said to have originated with the Port Authority's public relations staff.

Yamasaki and engineers John Skilling and Les Robertson worked closely, and the relationship between the towers' design and structure was clear. Faced with the difficulties of building to unprecedented heights, the engineers employed an innovative structural model: a rigid "hollow tube" of closely spaced steel columns with floor trusses extended across to a central core. The columns, finished with a silver-colored aluminum alloy, were 18 3/4" wide and set only 22" apart, making the towers appear from afar to have no windows at all.
 
Christophera said:
Yes, probably created by the infiltrators, they do sloppy work. I have reason.

Yamasaki did not come in until Robertson had already designed the whole center in concept. Robertson brought Yamasaki in. All Yamasaki did was design the core and certify the building safe. Worthington, Skilling, Helle and Jackson were the conceptual architects and requested because they brought him in. Yamasaki did request Emery Roth & Sons finish engineering specs for construction of the floors but Yamasaki designed the steel reinforced concrete tube.

I have an incomplete set of plans from Skilling and Yamasakis name is on them but it is no more than a name at that point. He hadn't even tested and rejected the original steel core columns Robertson had concieved yet.
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Source?
 
Garb said:
Obviously you have contradicted yourself, because there must be concrete in that picture since it is the LOWEST FLOOR.
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Count again. The core begins 5 levels down. The first taller floor is the ground level. The next is the mezzanine. The top we see is the 3rd. So I might be wrong in that the core is right below the top level rather than 3 down but the mezzanine was taller so the height was almost equivalent to 2 floors for each, the ground and second.


http://www.internationalskeptics.com/forums/attachment.php?attachmentid=4030&stc=1&d=1163311103
 

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Bell said:
Nope, it's the other way around, actually. First the outside and the floors were build (attached to some... hell, I don't know, invicicore I guess) and the concrete core followed 7 floors behind the rest of the building.
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The documentary stated the bottom of the core needed to be constructed to get the elevator guide rail support steel lined up properly and then the building brought up around it.

This usenet comment confirms this.

"Tony Jebson" <jebbo@texas.net> wrote:

>......Apparently, the WTC towers had no internal
>structural columns but relied on the exterior structure for
>support / strength. No doubt the impact of an airplane does
>this no end of harm.
I worked in downtown NY in the late 1960's when the towers were
built! At lunch time we went to the construction site to watch the
progress. And we saw them first buildt an internal thick walled
rectangular concrete core inside which later the elevators ran. The
steel work was erected around this core several floors behind!

-=tom=-

Of course Tom couldn't see what was happening once the towers got over 5 floors or so and casting the concrete inside the interior box columns with them as support for the outer forms makes better sense.

I do feel that it was done differently for WTC 2 tho. WTC 2 went up much faster than did WTC 1. There was a major learning experience involved.
 
Garb said:
Source?
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Just the documentary. Not available, yet.

Got raw evidence of the steel core columns from the demo images? No.

The demo images clinch it. Forty seven 1300 foot columns would definitely be showing here if the spire is standing, which is outside the core area.
 
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