26-03-2013, 07:07 PM
(This post was last modified: 14-04-2013, 12:11 AM by Jeffrey Orling.)
I don't quite understand why the subject of what happened on 9/11 degenerates so quickly into charges of being a dis info agent and all manner of personal insults. But this is the pattern when there is disagreement of the matter. Those who don't support the controlled demolition are tagged government shills, dis infor agents, liars and so forth. And from the supporters of the official explanation anyone who finds problems with it are branded as conspitacy nuts and idiots...
I happen to find both positions - the official explanation and the controlled demolition one... contain numerous flaws and problems. The official account, being inaccurate is nothing more than a cover up in the end. And this may be intentional. In fact, it's hard to see how so many enegineers and scientists could produce the technical reports as they did.
On the other hand, the hard evidence for CD is not there. All three towers collapsed and all the steel that is left shows not signs of being dismantled by bombs... or melted... or cut. The CD side has offered not a single mechanism to explain how the collapses were made to happen. They treat the destruction like a black box... something called CD is inside but you can't see it... only the result.
All CDs.. commercial ones use gravity for 95% (or so) of the energy (forces) to take apart a structure. Most, as people know involve destroying columns (axial load paths) at the base so that the top crashes down and collapses from the dynamic forces which are much greater than the static forces of the standing structure.
The twin towers came down when the tops were separated and dropped down.... this released enormous forces in the form of unsupported mass which crashed down through and destroying all the floors... separating the facade which fell away and leaving the remain core absent enough bracing and too unstable to stand on its own. The surviving core columns collapsed from Euler buckling forces.
NIST (official story) came up with an implausble explation for the cause the the tops' dropping... and failed to explain the mechanism of the collapes which ensued. My hunch is that they did so to avoid the fact that the structural designs of the towers did not have the redundancy in their designs to prevent the runaway collapse and complete destruction. This had nothing to do with the strength of the columns which were more than adequate... but the concept of how it was all put together... very innovative at the time and very much the reason it collapsed like a house of cards. Revealing this sort of incompetence.. or "product liability" would hardly be something that the PTB needed when they were selling their GWOT as the cause of it all. In fact, it hardly matters if it was actually planes and fuel or a few well placed devices... it turns out it didn't take much to bring them down. Was this known/understood by the conspirators? We can't know with what we have to work with unless someone comes forward with some evidence that such analysis was made in advance. It would have included whether the planes loaded with fuel could sever the tops...and an analysis such as ROOSD which applies to that design speficially... not to any old high rise.
Dropping the towers in a traditional way would require enormous amounts of explosive being placed on many columns in the lowest floors.. and produce extremely load and unmistakable explosive noises. So the top down destruction scenario was the only way to destroy the towers... ASSUMING THIS WAS THE AGENDA. That has only been assumed.. and there is no basis to assume that complete destruction of the towers was the objective.
And then there's Seven. Seven is supposed to be the key because to many it is undeniably a CD. It DOES resemble one. But as mentioned above... CD's work by using gravity to drive the collapse. So it was a collapse. No one will describe it as anythng but a collapse.
Now what caused it to collapse? NIST would have us believe it was some sort of elongation of an over heated girder resting on a beam seat at column 79 on the 13th floor. They spent a small fortune producing an animated cartoon of the frame failing and coming apart beginning at column 79 on the 13th floor. The trouble is... that the animation looks completely different from the real world event.. and apparently their calculations about the girder elongation were incorrect. NIST failed. They also told us that there was nothing below floor 8 of interest in explaining the collapse.
Odd that is since it looks just like a CD and CD's usually destroy structure at the base. And then there's the fact that we don't have many images of the base from south because WTC 1 had come down making that side not accessible to the press. And as in the twins we have no images from within the towers only imagery from outside. That certainly makes diagnosing interior problems rather difficult. But having the plans... at least helps.
And we have then now for 7 and how interesting they are. About a year ago I decided to take a closer look at 7. I pretty much thought NIST failed... and there was AE911T which explained the 100 foot 2.25 second collapse at free fall acceleration as only possible if 8 floors of columns were destroyed instantly to enable to top to descend for those 100 feet without any resistance at all. While it makes sense... the visuals we have do not support the destruction of 8 floors of columns.
But the visuals DO tell a story... and with the plans we can better understand at least WHERE it happened and HOW it happened even if we can't nail the precise cause.
The collapse was initiated in the region on the east side on floors 5,6 & 7.
Seven was another bizarre bit of innovative engineering.
We don't know why.... but back in the mid 80s Con Ed which owned the site conned the PANYNJ to buying the AIR RIGHTS to their property. There was a huge vacant lot across the street north or the World Financial Center... passed up... an inexpensive site to build and with waterfront views! The Con Ed air rights meant that the tower would have to be built over an existing main power sub station for lower Manhattan... the one that supplied electricity to the WTC. The up shot of this was that not all the columns in the tower could extend to the foundations... the Con Equipment including 3 - 30'x40' x 3 story tall transformers stood in the way. These were oil cooled and include thousands of gallons of flammable oil for cooling.
The building's engineer Irwin Cantor designed a series of load transfer structures to support the columns which could not extend the the foundations. The tower had 81 columns. Only 51 reached down to the foundation. The other 30 were supported on load transfer structures resting on a few of those 51 columns. The structures included 3 massive 3 story trusses... field assembled by bolting the massive steel sections together... Truss 1 was supported on its east side on a massive short girder MG53 which in turn was supported on 2 columns. The north wall had 8 columns just inside the curtain wall which were supported on the ends of 8 cantilever girders at floor 7. Floor 8 began at 105' above the ground. There was no basement.
The entire set of 15 columns on the east side began on floor 7 resting on massive wind shear trusses which had only 4 columns coupled to the foundation. A similar situation was on the west side.
And then in the mid 90s there were changes. NYC OEM center was put on the 23rd floor with several back up generators on the mech floors which were on floors 5, 6 & 7. These were powered by diesel... from several 275 gal day tanks which in turn were replenished by several huge tanks adding up to 30,000 gallons buried below the sidewalk... pumped up through Con Ed... across the floor to the east side between trusses 1 and 2 where the generators were. One of the two egress stairs... came down between trusses 1 and 2... and this is the one that exploded at 10 am when Jennings and Hess were trying to get out of the tower.
FEMA originally thought that the diesel might have cooked the trusses in their preliminary report in 2002. Cantor thought that it was a good possibility that diesel cooked and weakened the transfer trusses. ASCE thought that the connections needed to be studied by NIST when it did the full on investigation. They didn't do much at all with connections and nothing with the field erected truss connections.
NIST also claimed it had decided there was nothing of interest below floor 8. Ha????????????????????
And then all that diesel... tens of thousands of gallons in tanks below a 250,000 ton structure... was.... you guessed it... recovered. Ha?????????????????
Electrical power switches and transformers are known to overheat and even explode. 7 had for sub stations aside the the Con Ed's monsters. Each twin had 8. Shorts of high tension wires can get as hot as 10,000 or more degrees. The plane hitting tower 1 shorted 2 high tension electrical risers feeding the 2 sub stations on 108. You can see them burning just after the plan hits down on 96.
Rodriguez probably heard an electrical explosion caused by the plane shorting a transformer or switch in the sub basement. He heard and felt the sound of the plane a second later. Sound takes a second to travel from the 96th floor to the street level. Electricity travels instantaneously. And a voltage spike may have traveled up stream to Con Ed. They reported losing something like 13 high tension feeders before 9am. Coincidence? Or a consequence of the plane event? Did the voltage spikes race into the sub station and overheat equipment and cause some fires.. explosions? No evidence. But no one seems to have looked in there either... or if they did... tell us what they saw.
The movement of the tower BEFORE it came down... the full on "release" is consistent with a rapidly progressing failure beginning in the region of trusses 1 and 2 and progressing westward until there was no support in the center of the building which collapsed, the wind shear braced frames folded in and then the curtain wall.. attached to 57 columns and some bits of floor collapsed with no resistance from flr 8 down 105'...till it hit the ground.
Whatever caused the progressive collapse...the location of interest was transfer trusses 1 and 2 and the columns and girders they supported. The infamous col 79 was tied to column 76 supported mid span by truss 1. Curious.
The structure seems to be suspect for the way the tower came down. The connections needed to be looked at carefully.
They weren't.
I happen to find both positions - the official explanation and the controlled demolition one... contain numerous flaws and problems. The official account, being inaccurate is nothing more than a cover up in the end. And this may be intentional. In fact, it's hard to see how so many enegineers and scientists could produce the technical reports as they did.
On the other hand, the hard evidence for CD is not there. All three towers collapsed and all the steel that is left shows not signs of being dismantled by bombs... or melted... or cut. The CD side has offered not a single mechanism to explain how the collapses were made to happen. They treat the destruction like a black box... something called CD is inside but you can't see it... only the result.
All CDs.. commercial ones use gravity for 95% (or so) of the energy (forces) to take apart a structure. Most, as people know involve destroying columns (axial load paths) at the base so that the top crashes down and collapses from the dynamic forces which are much greater than the static forces of the standing structure.
The twin towers came down when the tops were separated and dropped down.... this released enormous forces in the form of unsupported mass which crashed down through and destroying all the floors... separating the facade which fell away and leaving the remain core absent enough bracing and too unstable to stand on its own. The surviving core columns collapsed from Euler buckling forces.
NIST (official story) came up with an implausble explation for the cause the the tops' dropping... and failed to explain the mechanism of the collapes which ensued. My hunch is that they did so to avoid the fact that the structural designs of the towers did not have the redundancy in their designs to prevent the runaway collapse and complete destruction. This had nothing to do with the strength of the columns which were more than adequate... but the concept of how it was all put together... very innovative at the time and very much the reason it collapsed like a house of cards. Revealing this sort of incompetence.. or "product liability" would hardly be something that the PTB needed when they were selling their GWOT as the cause of it all. In fact, it hardly matters if it was actually planes and fuel or a few well placed devices... it turns out it didn't take much to bring them down. Was this known/understood by the conspirators? We can't know with what we have to work with unless someone comes forward with some evidence that such analysis was made in advance. It would have included whether the planes loaded with fuel could sever the tops...and an analysis such as ROOSD which applies to that design speficially... not to any old high rise.
Dropping the towers in a traditional way would require enormous amounts of explosive being placed on many columns in the lowest floors.. and produce extremely load and unmistakable explosive noises. So the top down destruction scenario was the only way to destroy the towers... ASSUMING THIS WAS THE AGENDA. That has only been assumed.. and there is no basis to assume that complete destruction of the towers was the objective.
And then there's Seven. Seven is supposed to be the key because to many it is undeniably a CD. It DOES resemble one. But as mentioned above... CD's work by using gravity to drive the collapse. So it was a collapse. No one will describe it as anythng but a collapse.
Now what caused it to collapse? NIST would have us believe it was some sort of elongation of an over heated girder resting on a beam seat at column 79 on the 13th floor. They spent a small fortune producing an animated cartoon of the frame failing and coming apart beginning at column 79 on the 13th floor. The trouble is... that the animation looks completely different from the real world event.. and apparently their calculations about the girder elongation were incorrect. NIST failed. They also told us that there was nothing below floor 8 of interest in explaining the collapse.
Odd that is since it looks just like a CD and CD's usually destroy structure at the base. And then there's the fact that we don't have many images of the base from south because WTC 1 had come down making that side not accessible to the press. And as in the twins we have no images from within the towers only imagery from outside. That certainly makes diagnosing interior problems rather difficult. But having the plans... at least helps.
And we have then now for 7 and how interesting they are. About a year ago I decided to take a closer look at 7. I pretty much thought NIST failed... and there was AE911T which explained the 100 foot 2.25 second collapse at free fall acceleration as only possible if 8 floors of columns were destroyed instantly to enable to top to descend for those 100 feet without any resistance at all. While it makes sense... the visuals we have do not support the destruction of 8 floors of columns.
But the visuals DO tell a story... and with the plans we can better understand at least WHERE it happened and HOW it happened even if we can't nail the precise cause.
The collapse was initiated in the region on the east side on floors 5,6 & 7.
Seven was another bizarre bit of innovative engineering.
We don't know why.... but back in the mid 80s Con Ed which owned the site conned the PANYNJ to buying the AIR RIGHTS to their property. There was a huge vacant lot across the street north or the World Financial Center... passed up... an inexpensive site to build and with waterfront views! The Con Ed air rights meant that the tower would have to be built over an existing main power sub station for lower Manhattan... the one that supplied electricity to the WTC. The up shot of this was that not all the columns in the tower could extend to the foundations... the Con Equipment including 3 - 30'x40' x 3 story tall transformers stood in the way. These were oil cooled and include thousands of gallons of flammable oil for cooling.
The building's engineer Irwin Cantor designed a series of load transfer structures to support the columns which could not extend the the foundations. The tower had 81 columns. Only 51 reached down to the foundation. The other 30 were supported on load transfer structures resting on a few of those 51 columns. The structures included 3 massive 3 story trusses... field assembled by bolting the massive steel sections together... Truss 1 was supported on its east side on a massive short girder MG53 which in turn was supported on 2 columns. The north wall had 8 columns just inside the curtain wall which were supported on the ends of 8 cantilever girders at floor 7. Floor 8 began at 105' above the ground. There was no basement.
The entire set of 15 columns on the east side began on floor 7 resting on massive wind shear trusses which had only 4 columns coupled to the foundation. A similar situation was on the west side.
And then in the mid 90s there were changes. NYC OEM center was put on the 23rd floor with several back up generators on the mech floors which were on floors 5, 6 & 7. These were powered by diesel... from several 275 gal day tanks which in turn were replenished by several huge tanks adding up to 30,000 gallons buried below the sidewalk... pumped up through Con Ed... across the floor to the east side between trusses 1 and 2 where the generators were. One of the two egress stairs... came down between trusses 1 and 2... and this is the one that exploded at 10 am when Jennings and Hess were trying to get out of the tower.
FEMA originally thought that the diesel might have cooked the trusses in their preliminary report in 2002. Cantor thought that it was a good possibility that diesel cooked and weakened the transfer trusses. ASCE thought that the connections needed to be studied by NIST when it did the full on investigation. They didn't do much at all with connections and nothing with the field erected truss connections.
NIST also claimed it had decided there was nothing of interest below floor 8. Ha????????????????????
And then all that diesel... tens of thousands of gallons in tanks below a 250,000 ton structure... was.... you guessed it... recovered. Ha?????????????????
Electrical power switches and transformers are known to overheat and even explode. 7 had for sub stations aside the the Con Ed's monsters. Each twin had 8. Shorts of high tension wires can get as hot as 10,000 or more degrees. The plane hitting tower 1 shorted 2 high tension electrical risers feeding the 2 sub stations on 108. You can see them burning just after the plan hits down on 96.
Rodriguez probably heard an electrical explosion caused by the plane shorting a transformer or switch in the sub basement. He heard and felt the sound of the plane a second later. Sound takes a second to travel from the 96th floor to the street level. Electricity travels instantaneously. And a voltage spike may have traveled up stream to Con Ed. They reported losing something like 13 high tension feeders before 9am. Coincidence? Or a consequence of the plane event? Did the voltage spikes race into the sub station and overheat equipment and cause some fires.. explosions? No evidence. But no one seems to have looked in there either... or if they did... tell us what they saw.
The movement of the tower BEFORE it came down... the full on "release" is consistent with a rapidly progressing failure beginning in the region of trusses 1 and 2 and progressing westward until there was no support in the center of the building which collapsed, the wind shear braced frames folded in and then the curtain wall.. attached to 57 columns and some bits of floor collapsed with no resistance from flr 8 down 105'...till it hit the ground.
Whatever caused the progressive collapse...the location of interest was transfer trusses 1 and 2 and the columns and girders they supported. The infamous col 79 was tied to column 76 supported mid span by truss 1. Curious.
The structure seems to be suspect for the way the tower came down. The connections needed to be looked at carefully.
They weren't.