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originally posted by: LaBTop
A reply to: skyeagle409
When structural steel components fail they can and will make loud noises, and that will develop into a loud roar when hundreds are failing in quick succession, like in all three WTC collapses can be heard, after the initiation events.
I don't contest the well known failure sounds of structural steel.
And their just as well known audio and seismic footprints. So, what's your point exactly?
I contest the failure initiation as laid out by NIST. And I am not alone in that.
Once upon a time there were 19 Magical Jihadists from a faraway land. They used itsy-bitsy box cutters to terrify 8 professional airline pilots. These pilots were so terrified of getting a nasty boo-boo they actually let the Magical Jihadists fly 4 commercial aircraft loaded with innocent passengers. Then the Magical Jihadists chanted a secret verse from their Koran making the planes disappear from all Air Traffic Control monitors. Now they could fly them all around the mighty USA air defense system, completely unbothered, for almost 2 hours.
The 9-11 Fairy Tale from Hell
“And then Grandmother Sam ate up the big, bad terrorist wolf, and we all lived happily ever after!”
The NIST story is so clearly incomplete, and a cover-up.
How does NIST ignore the extensive testimony of explosions,...
ignore basic physics in the report even while admitting "free fall" for 2.25 seconds, all the while refusing to provide a model of the collapse (saying it might "jeopardize public safety"), and yet get virtually no questions from the MSM?
Don't ever give up this fight! Right is right and wrong is wrong. Someday the masses will understand.
Once upon a time there were 19 Magical Jihadists from a faraway land. They used itsy-bitsy box cutters to terrify 8 professional airline pilots.
Now they could fly them all around the mighty USA air defense system, completely unbothered, for almost 2 hours.
originally posted by: skyeagle409
People need to understand that you cannot just place explosives in a steel frame building and expect the building to collapse, especially without pre-weakening the structure, otherwise you are going to simply have what happened in 1993 where WTC 1 withstood the detonation of a huge bomb or something like this building.
Building Frame
Azimuth and elevation - an angular coordinate system for locating positions in the sky. Azimuth is measured clockwise from true north to the point on the horizon directly below the object. Elevation is measured vertically from that point on the horizon up to the object. If you know the azimuth of a constellation is 135° from north, and the elevation is 30°, you can look toward the southeast, about a third of the way up from the horizon to locate that constellation. Because our planet rotates, azimuth and elevation numbers for stars and planets are constantly changing with time and with the observer's location on earth.
See Azimuth/Elevation/Zenith Figure below :
New Reports on the Twin Towers Released
Submitted by JGourley on Mon, 03/23/2009 - 11:25pm
fireproofing FOIA Twin Towers
On January 8, 2008, I submitted a FOIA Request to NIST asking for all records that relate to the fireproofing upgrades made to the Twin Towers prior to 9/11. I was recently successful in getting three new reports about the condition of the Twin Towers just prior to 9/11 released.
One report is a fire engineering assessment completed by Burro Happold in February of 2000. The other two reports were property condition assessments done by Merritt & Harris, Inc. a year or so prior to 9/11. These reports together total hundreds of pages, and I want them widely released so they can be analyzed in light of the NIST reports on the collapses of the Twin Towers. Note that the Merritt & Harris reports are very large files.
Merritt & Harris Report #1: www.megaupload.com...
Merritt & Harris Report #2: www.megaupload.com...
Burro Happold Report: www.megaupload.com...
Please report any interesting findings here.
1) Does Par 4, Pdf Page 14 of MH2 mean that there were entry points to the innards of WTC1 & WTC2 from WTC7?
2) The Capital outlay plan for 2001 mentions $2.4M of expenditure for upgrades to the HVAC and Fire Emergency systems. That work would have been done by or in coordination with ABM Industries.(Pdf Page 64, MH2)
3) ABM Industries signed a contract for the "Electrical, HVAC, and general maintenance" of the WTC (Par 4, Pdf Page 26).
page 5 and 6 : The NIST press release does not mention either the floor assembly fire testing or the low percentage of columns found to have experienced high temperatures in the microstructure testing. Both the press release and the report’s conclusion attempt to point towards a theory of dislodged fireproofing materials as the reason for the alleged interior steel weakening. It is a virtual certainty that NIST did floor assembly fire testing without fireproofing, as a failure in that case would have proven their fire weakening hypothesis.(9)
As there is no mention of failures during these tests, it is obvious that they apparently did not produce results which would back up the fire induced collapse theory. It is important to note that NIST has not been able to cause physical models to fail with the fire induced collapse theory.
It is instructive that the first visible signs of failure on the North Tower are when the antenna mast moves downward by ten to twelve feet before the perimeter roof line moves. This is indicative of the central core suddenly and completely failing first. If you haven’t seen this watch it frame by frame at the link below.
911research.wtc7.net...
These frames don’t show slow creep, they show sudden failure of the central core itself. They certainly don’t show the perimeter walls failing first. If the central core failed first it would cause the floor trusses, not to sag, but to follow them downward. In this situation the other end of the floor trusses would apply a tremendous force and bending moment to the perimeter wall columns, causing them to bow inwardly and ultimately to fail. Some of the NIST photos of WTC1, showing inwardly bowed perimeter columns, are frozen frames taken from video. In these photos the roof of the building and antenna mast are not shown.
It would be interesting to see these videos, without cropping of the roof-line and antenna mast, to determine if the bowing of the perimeter columns occurs after the antenna mast starts moving downward.
The downward movement of the antenna mast, before the perimeter roof-line, certainly makes it appear that the central core failed first and that it’s failure is what caused the floor trusses to move downward and pull on the perimeter columns, causing them in turn to bow inwardly, buckle, and fail.
The central core needed to have a loss of 67% of its original strength before any collapse initiation could begin to occur, and even then it could not be sudden, due to the strain hardening of the steel which would take place after initial yielding.(10)
Since the evidence for column damage, due to aircraft impact and fire, cannot account for more than a 20% loss of strength in the central core, it does not appear any collapse initiation, let alone a sudden initiation, can be accounted for without some form of artificial weakening process or controlled demolition being involved. By demolishing the central core, the destruction of the building could also be done with the added advantage of the demolition being mostly hidden from view.
REFERENCES :
9. NIST photos of fire experiment setups. See uninsulated truss setup in next to last picture at bottom. wtc.nist.gov...
10. “Sudden Collapse Initiation was Impossible” by Dr. Frank Legge and Tony Szamboti, Dec. 2007.
The damage observed at WTC cannot possibly have been caused by office fires and gravity.
Are you suggesting that all those companies you mention, some with lucrative government contracts, would not make false statements?
Sorry, I know better than that. Big companies know that to graduate, one must cooperate.
The damage observed at WTC cannot possibly have been caused by office fires and gravity.
If the airplane company Boeing were to examine the debris from 911 in the same manner it is going to examine the flaperon found last week, we might come to other conclusions, but it won't ever get the chance...
... (assuming it even wants to) because the parts from the airplanes on 911 is hidden away somewhere in secret.
We have only the reputation for mendacity of the government to rely on. The official story is a deception and a lie.
Sorry, I know better than that. Big companies know that to graduate, one must cooperate.
Why the World Trade Center Buildings Collapsed: A Fire Chief ’s Assessment
The jet collapsed the ceilings and scraped most of the spray-on fire retarding asbestos from the steel trusses. The steel truss floor supports probably started to fail quickly from the flames and the center steel supporting columns severed by plane parts heated by the flames began to buckle, sag, warp and fail. Then the top part of the tower crashed down on the lower portion of the structure. This pancake collapse triggered the entire cascading collapse of the 110-story structure.
vincentdunn.com...
Did experts on the scene think WTC 7 was a controlled demolition?
"Several demolition teams had reached Ground Zero by 3:00 pm on 9/11, and these individuals witnessed the collapse of WTC 7 from within a few hundred feet of the event. We have spoken with several who possess extensive experience in explosive demolition, and all reported seeing or hearing nothing to indicate an explosive detonation precipitating the
collapse.
Civil & Structural Engineers on WTC Collapse
"The aircraft moved through the building as if it were a hot and fast lava flow," Sozen says. "Consequently, much of the fireproofing insulation was ripped off the structure. Even if all of the columns and girders had survived the impact - an unlikely event - the structure would fail as the result of a buckling of the columns.
The heat from an ordinary office fire would suffice to soften and weaken the unprotected steel. Evaluation of the effects of the fire on the core column structure, with the insulation removed by the impact, showed that collapse would follow whatever the number of columns cut at the time of the impact."
911-engineers.blogspot.com...
Towers Weakened by Planes; Brought Down by Fire
Analysis by a team of 25 of the nation's leading structural and fire protection engineers suggests that the World Trade Center Towers could have remained standing indefinitely if fire had not overwhelmed the weakened structures, according to a report presented today at a hearing of the House Science Committee.
That finding is significant, said W. Gene Corley, Ph.D., team lead for the ASCE/FEMA Building Performance Study Team, because extreme events of this type, resulting in such substantial damage, are generally not considered in building design, and the fact that these structures were able to successfully withstand such damage is noteworthy.
Fire, Not Extra Explosives, Doomed Buildings, Expert Says
New Mexico demolitions expert Van Romero said on the day of the attack that he believed the building collapses were "too methodical" to have been a result of the collisions, and that he thought "there were some explosive devices inside the buildings that caused the towers to collapse." His remarks were published in the Albuquerque Journal.
Ten days later the same newspaper printed a retraction, in which Romero is quoted as saying "Certainly the fire is what caused the building to fail."
911research.wtc7.net...
skyeagle409, you were a pilot and airplane mechanic, as you wrote.
I hope you are not a reincarnation of that other long time Air Force pilot, Reheat.
Reheat managed to set an awful heap of 9/11 OS doubting people on the wrong foot, for a long time, by his ever changing bit by bit, signature link : Debunking the North of Citgo theory.
I suppose you agree with common sense, when any eyewitness says on record, that the plane flew right over their head or car while they stood in a traffic jam, in the center lane of Route 27, and right in front of the concrete heli-pad, that it never ever could have been the SoC plane trajectory which they witnessed.
American 77 Flight Path and the Pentagon
American 77 Red Line Flight Path
Damaged Pentagon Generator
American 77 Flight Path Toward the Generator
It's impossible for a plane approaching on the north side flight path described by the witnesses to have caused the damage to the generator trailer.
Why American 77 could not have passed north of the gas station