Top-Down Explosive Demolition of South Tower

In this famous South Tower photo, the floors are still intact above the explosive wave proceeding down the tower. Look at the lowest explosive puffs on the left and about six or seven floors at the corner are still intact above it. The demolition wave here is traveling down the tower faster than the floors collapsing above. The toppling top 30 floors are shattered with explosives and disappear down into the pulverized dust cloud.


Question: Why do you think the building tilted before collapse? Wouldn't a controlled demolition be controlled?

Well, I think they screwed up and hit the wrong sequence first or did not have two tiers of explosives tied together or had something mis-connected, and only blew one side of that top 30 story block, and then as it toppled, they had to hurry up and blow the other side and disintegrate the 30 story block before it toppled right off and ruined their plans. Or perhaps the damage from the aircraft threw off the calculations of the 9-11 planners.

Then they quickly went ahead with their top-down explosive demolition sequence which was probably computer controlled. They did not think that suspicious investigators would notice the explosive detonations right at the very beginning, running 6 or 7 floors (visible at the corner) ahead of the floor collapses, (pancaking) and of course those explosive detonations got further and further ahead of the floor collapses, removing the resistance (physics law) from the structural steel framework which was below and supporting the building. That is why both towers fell at near free-fall speed; there was no resistance left in the supporting steel and massive core columns to impede the floor collapses.
Demolition Wave Running 6-7 Floors Ahead of Collapse Wave

The explosive nature of the demolitions was quite apparent to many open-minded persons from the very day of 9-11, as the clouds of pulverized material blew up and out along with huge pieces of structural steel, at distances greater than the tower widths.




After blowing the central core connections, there still would be the outer wall strength and cross braces to hold up the floors below, until the pancaking floors reached them. And there could have been a 2nd sequence of demolition charges moving a floor or two ahead of the pancaking floors to remove the final resistance.


The exterior columns were not load bearing and were much weaker than the primary load bearing core columns.

There could have been a 2nd sequence of demolition charges at the exterior columns, moving a floor or two ahead of the pancaking floors to remove the final resistance, but that would be very difficult to see in the explosive clouds of pulverized debris and concrete.

Almost all of the concrete in the twin towers was turned to a fine dust and ejected from the buildings at high speed in all directions creating the huge dust clouds we all saw on 9/11. Very little intact concrete made it to ground.

When the building was constructed the concrete was poured into a floor pan, essentially a corrugated steel sheet, then covered with carpet or other flooring material. The official explanation for the collapse of the buildings is that one floor fell on the floor below it, and so-on down the tower. If this 'pancake' theory of collapse were correct we would expect to find the concrete floor slabs to be stacked on top of one another at the base of the towers, instead essentially all of the concrete in the twin towers, was converted to a very fine dust which was ejected at high speed horizontally from the tower even from floors near the very top of the tower. How is this possible? Without the use of explosives how did the concrete get converted to a powder and get airborne? What is the mechanism?

The core blowing demolitions are only moving a few seconds ahead of the collapsing floors, although they do seem to be getting further and further ahead. One physics professor ascertained that the demolition wave of one of the towers finally got about 30 stories ahead of the collapse wave. Therefore the outer wall would not have to support the weight very long.

Question: As soon as you remove the "final resistance" everything above that point in space will begin to move. You cannot remove it a floor or two ahead of the pancaking floors, and still have things standing there. Doesn't it have to be simultaneous?

The collapsing floors above (pancaking) were falling at near free fall speeds, so the floor or two below with its resistance removed with a 2nd sequence of demolition explosives, could hardly fall any faster than that. Timed properly, the two levels of 'collapse' would essentially fall together. There could be other sophisticated mechanisms used which we have not even yet imagined. After all, these were likely highly trained Military demolition experts with access to much more sophisticated explosives and timing devices than ordinary demolition crews, who attempted their jobs with minimum cost and minimum damage to surrounding buildings.

The North Tower was destroyed with a top-down explosive demolition in like-manner, and all those innocent people, including brave firemen who thought the fires were nearly out, and control of the towers was a done deal, and about all that was left was get the people out and treated.

How sad that their last thoughts were of treachery committed against them.

The North Tower was destroyed with a top-down explosive demolition in like-manner

Diagram of WTC complex

These video analyses by David S Chandler show heavy steel pieces being hurled out from the North Tower alleged gravity collapse at 70 mph. Further analysis identifies the origin of the ejection as about the 82nd floor, where the vertical motion of the building was no more than half that speed

High Speed Ejection from WTC1 - An Analysis
by David S Chandler - Physics-Mathematics Educator - BS-Physics (IPS); MS-Mathematics


High Speed Ejection from WTC1--Further Analysis - Result: over 70 mi/hr
Further analysis identifies the origin of the ejection as about the 82nd floor


Another High Speed Ejection from WTC1 - Result: over 70 mi/hr


Stabilized Video of South Tower


North Tower Top-Down Explosive Demolition

Another view

Blast wave, is the only possible explanation. Who cares precisely the how and the what. There was a blast wave, a demolition wave, and therefore, the buildings were intentionally imploded, or in this case, exploded, the first top down explosive demolition of a high rise steel building, with the explanation everyone is supposed to believe, that they simply "collapsed". They were quite obviously taken down on purpose, and the plane strikes and fires were not the actual cause, only the broad daylight "slight of hand" ruse, to create a suspension of disbelief as to the cause of their total destruciton, in the horrified minds-eye of the observing world. That's all that matters. That it was a ruse, the official story about it, a flat out lie. Does it matter the precise mechanism and explanation other than THEY BLEW THEM UP? I don't think so. We've done our job. The sceptics and debunkers, they would like to drag it in that direction, with questions like - when did they wire the buildings for demolition? How many bombs were there? Was it on every floor, or every tenth floor? (said with a shrill wine)

Well, even if every tenth floor, with zero resistence, given the laws of motion, it would still have taken over 30 seconds.

The only possible way they could have come down that fast, is by a blast wave, removing all structural integrity BENEATH the falling debris plume/fountain of building material. Period. That's the only thing that needs to be proven unequivocally and has been proven, and it does not matter where those graphs came from, as they depict the truth and the reality in a very easy to understand, straightforward manner.

South Tower Top-Down Explosive Demolition

Another view

A few of the core columns which needed to be blown before the towers could collapse in their top-down explosive demolition. Notice how massive they are, and in the link how they have been bent.

Photos of Remains of the Twin Towers in Hanger 17 - Core columns


Here is an interactive panorama view from inside Hanger 17 at Kennedy Airport. Click on the link, choose front or back of hanger or inside tent, then go to full screen. With your mouse you can pan any direction you choose

Inside Hanger 17

You can rotate the three views downward and backward. You can even look straight up at the ceiling.

The top-down demolition of WTC1 in sequence

A great point and something I have pointed out to people on numerous occasions with the exact phrase "top down" which for the most part I agree with.

What is also apparent though is the very top floors above impact were "bottom up" - just like a normal controlled demolition - almost as if the top 30 stories were treated as a seperate building. After the top 30 floors was demolished bottom up, the top down progression starts from there after.

He is a sequence of images from the south tower collapse illustrating exactly that:







[edit on 26-10-2008 by Insolubrious]

posted by Insolubrious
A great point and something I have pointed out to people on numerous occasions with the exact phrase "top down" which for the most part I agree with.

What is also apparent though is the very top floors above impact were "bottom up" - just like a normal controlled demolition - almost as if the top 30 stories were treated as a seperate building. After the top 30 floors was demolished bottom up, the top down progression starts from there after.

I am unable to view your images. And I am not necessarily disagreeing with you.



However that bottom up collapse on the top tier of floors does not seem to happen on WTC1. In these images, the antennae sitting on the central core seems to drop first before the top floor moves downward. Maybe I am misunderstanding your phrasing.



I think I see what you mean in this original stationary wmv video of the antenna falling. About the top 18 floors fall like a normal demolition, and then the top-down explosive demolition continues with the remainder of the 92 floors. Incidentally, you can right-click on the link and save the wmv file to your hard drive for viewing later.

Original video from which the still shots of the antenna falling first were taken
Antenna Falls First video

Photos from a static mounted (see guy wire in lower left-hand corner) WTC1 video show the North Tower antenna which weighed 353 tons and was supported by the entire core structure fell first about 10-15 feet and fell 56 feet before the 94th floor began to fall. The large exterior sections were shattered and blown out of the building in the original What we saw - Bob and Bri video at about the 19:42 time and the core shattered which is why the antenna fell first in other WTC 1 videos. Or more likely, perhaps the core columns were also shattered in the sub-basement levels prior to the explosions blowing the large pieces out in the above video, dropping the antenna first.
Source

Good post, thanks! I think everybody on the planet knows it was an internal job these days though, but you will always have a few people around the place who fail to understand simple math.

posted by ravenflt
Good post, thanks! I think everybody on the planet knows it was an internal job these days though, but you will always have a few people around the place who fail to understand simple math.

NIST is actually employed as cover-up artists. They fit the evidence and the science to their pre-conceived objectives. NIST dishonestly set up their computer models and could not simulate a tower collapse until they had sabotaged their own computer simulations by degrading the strength of the tower by a large percentage. NIST only modeled to the beginning of the collapse, ignoring the chance of explosives.

Question: As soon as you remove the "final resistance" everything above that point in space will begin to move. You cannot remove it a floor or two ahead of the pancaking floors, and still have things standing there. Doesn't it have to be simultaneous?

The collapsing floors above (pancaking) were falling at near free fall speeds, so the floor or two below with its resistance removed with a 2nd sequence of demolition explosives, could hardly fall any faster than that. Timed properly, the two levels of 'collapse' would essentially fall together. There could be other sophisticated mechanisms used which we have not even yet imagined. After all, these were likely highly trained Military demolition experts with access to much more sophisticated explosives and timing devices than ordinary demolition crews, who attempted their jobs with minimum cost and minimum damage to surrounding buildings.

The North Tower was destroyed with a top-down explosive demolition in like-manner, and all those innocent people, including brave firemen who thought the fires were nearly out, and control of the towers was a done deal, and about all that was left was get the people out and treated.