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WTC 1 Diagonal Slice

Analysis, observations and theory related to progression.

WTC 1 Diagonal Slice

Postby femr2 » Sun Jul 26, 2009 7:20 am

During the descent of WTC 1 a linear series of ejections can be seen traversing from the South East corner, downwards and towards the North East corner.

Image
Image

http://www.youtube.com/watch?v=gkS58AwDX0E
http://www.youtube.com/watch?v=Tr5GJwfLCl4

I hope all members will make every effort to discuss how this damage could be caused.
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Re: WTC 1 Diagonal Slice

Postby Major_Tom » Mon Jul 27, 2009 4:15 am

I never noticed that before.

Any efforts at a higher resolution clip or more refined detail would be appreciated.


We can also see the large perimeter piece from the NE corner. It is special for many reasons, not the least of which is that it leads all large pieces in freefall.

It breaks off of the building at the earliest moments of collapse initiation from floors 98 to 106. It can be used as a guage to judge the speed of freefall.

More about the piece below

http://www.sharpprintinginc.com/911/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=91&MMN_position=223:223


Using this piece as a freefall guage, we see some of the ejections in the femr video lead freefall by a considerable margin.
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Re: WTC 1 Diagonal Slice

Postby femr2 » Mon Jul 27, 2009 5:22 am

Major_Tom wrote:I never noticed that before.

Any efforts at a higher resolution clip or more refined detail would be appreciated.

The YT video's have already been processed, and are in 1280x720 HD format, but I'll see what I can do.

The limitation on placing animations on this forum is on the bloated nature of animated GIFs. I try and limit them to 1500Kb here. The YT videos are in x264 format and are ~100Mb uploads.

Using this piece as a free-fall gauge, we see some of the ejections in the femr video lead free-fall by a considerable margin.

Indeed, although I think the most important factor is that the series of ejecta traverse diagonally, and not totally linearly (The 'line' is not created 'in order' from top to bottom, of the visible portion).

That the ejecta traverses diagonally surely negates the source being internal debris 'falling', which would drop vertically. It is also not correlated to core position, with the initial ejecta being close to the SE corner, and the known orientation of the long side of the core being E-W.
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Re: WTC 1 Diagonal Slice

Postby femr2 » Mon Jul 27, 2009 6:16 am

Major_Tom wrote:Any efforts at a higher resolution clip or more refined detail would be appreciated.

I've uploaded a small segment of one of the YT video's, in lossless HuffYuv format, here:
http://www.megaupload.com/?d=5LZ78P53

(I've left it in huffyuv to negate any YT video recoding noise in the clip, and allow smooth scrubbing)

You'll need a HuffYuv codec:
http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv-2.1.1.zip
http://neuron2.net/www.math.berkeley.edu/benrg/huffyuv.html

I recommend using VirtualDub:
http://virtualdub.sourceforge.net/
http://www.virtualdub.org/

1) Download the codec and install it.
2) Download latest stable VirtualDub and extract it from the zip file. It doesn't need installing.
3) Open the clip with VirtualDub and drag the position slider back and forth. You can also use the mouse wheel to scrub frames.

Using HuffYuv will afford you the absolute smoothest scrub method available.
Can't recommend it enough.

If you scrub towards the end of the clip you'll gain the best possible mental image of the diagonal ejecta.
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Re: WTC 1 Diagonal Slice

Postby femr2 » Mon Jul 27, 2009 8:58 am

Also visible in the following clip:
http://www.youtube.com/watch?v=GgnkO1SeuPU (From 02:12)
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Re: WTC 1 Diagonal Slice

Postby psikeyhackr » Mon Jul 27, 2009 5:50 pm

I never noticed them before.

Further proof that something very weird happened that day.

After thinking about it for two weeks I figured that normal airliners could not bring the buildings down that fast. So why haven't our EXPERTS been screaming for accurate information on the distribution of steel and concrete for SEVEN point EIGHT THREE YEARS?

psik
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Re: WTC 1 Diagonal Slice

Postby femr2 » Wed Jul 29, 2009 5:38 am

psikeyhackr wrote:...why haven't our EXPERTS been screaming for accurate information on the distribution of steel and concrete...

Concrete mass distribution is available (or calculable). My spreadsheet model contains suitably accurate per-floor values, separated between inside and outside core.

Core steel mass distribution is also available, with a bit of effort calculating masses from the core element cross-sectional information available.

Perimeter column distribution is, as you say, not readily available.

However, such a discussion would be very much "off-topic" on this thread.

May I suggest creating a separate thread for compilation of all available steel mass information.

Gregs base spreadsheet is as good a place to start as any. I'll add several other sources once you create the thread.
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Re: WTC 1 Diagonal Slice

Postby femr2 » Fri Nov 06, 2009 6:00 pm

Any interest in trying to explain the highlighted behaviour ... ?
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Re: WTC 1 Diagonal Slice

Postby Major_Tom » Fri Nov 06, 2009 7:12 pm

Demo? This is most probably well ahead of the OOS sw ejections. I can tell by using the freefalling ne corner assembly (which leads all other large objects in the fall) as a reference.

So these are, without much doubt, the leading ejections.
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Re: WTC 1 Diagonal Slice

Postby femr2 » Fri Nov 06, 2009 7:30 pm

Major_Tom wrote:Demo? This is most probably well ahead of the OOS sw ejections. I can tell by using the freefalling ne corner assembly (which leads all other large objects in the fall) as a reference.

So these are, without much doubt, the leading ejections.

With no doubt at all. Far in advance of the leading West face ejecta.

http://www.youtube.com/watch?v=GgnkO1SeuPU

Pause at 2:12

I'll try and put a comparative animation together.

:)
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Re: WTC 1 Diagonal Slice

Postby Major_Tom » Fri Nov 06, 2009 7:39 pm

They seem to line up with the core (but I cannot confirm that).

What does that mean? Core attacks lead all else? Core destruction leads? (That is an Achimspok idea? I recall I good video on that. Peterene, do you have the link?)
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Re: WTC 1 Diagonal Slice

Postby femr2 » Fri Nov 06, 2009 7:58 pm

Major_Tom wrote:They seem to line up with the core (but I cannot confirm that).

What does that mean? Core attacks lead all else? Core destruction leads? (That is an Achimspok idea? I recall I good video on that. Peterene, do you have the link?)

You'll like this one...

Image

Watch carefully on loop for a while...

The diagonal slice begins at the bottom right of the slice, and traverses upwards...

I'm happy to say core destruction (of one kind or other :wink: ) low in the tower, bottom-up, shortly after initiation.

Will repost this image for correlation:
Image
Image
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Re: WTC 1 Diagonal Slice

Postby Trippy » Sat Nov 07, 2009 1:00 am

femr2 wrote:During the descent of WTC 1 a linear series of ejections can be seen traversing from the South East corner, downwards and towards the North East corner.

Image
Image

http://www.youtube.com/watch?v=gkS58AwDX0E
http://www.youtube.com/watch?v=Tr5GJwfLCl4

I hope all members will make every effort to discuss how this damage could be caused.

Are you talking about what appears to be damage to the face? Or the path the falling debris takes.

If it's the later, that's what I was asking about over in the other thread when I was asking about debris falling towards the tower.
Correlation does not imply causation
advocatus diaboli
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Re: WTC 1 Diagonal Slice

Postby femr2 » Sat Nov 07, 2009 1:13 am

Trippy wrote:Are you talking about what appears to be damage to the face? Or the path the falling debris takes.

If it's the later, that's what I was asking about over in the other thread when I was asking about debris falling towards the tower.

The former. The shape of the dust trail is misleading on the latter. The dust is expanding, so it gives the impression of a directional fall in an odd direction.

Most definitely talking about the damage to the face traversing from lower north to upper south in a diagonal line, far in advance of the descending portion of the tower..
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Re: WTC 1 Diagonal Slice

Postby OneWhiteEye » Sat Nov 07, 2009 5:21 pm

I wanted to wait to see this characterized more, which has happened. Of all the anomalies, this takes the cake. It has even edged out an anomaly on the S Tower that, after all this time, no one else seems to have noticed.

Something else that doesn't get mentioned: There's a puff that emanates low down in the NE corner, well ahead of the advancing debris front; wonder if this is tied in.

Personally, I think sustained eccentric load (2 - 4 sec), even reduced magnitude from crushing, might fracture the lower section. Harmless elastic waves, my butt. But that is me. The official theory has nothing to say about this except overpressurization, something that seems just a wee farfetched. Correct me if I'm wrong.
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