On September 11, 2001, the most serious terrorist attack in history occurred in the United States, killing more than 3,000 people and directly triggering two wars. It is said that this case was committed by al-Qaeda led by this?, Laden, and . But the increasing evidence shows that this is an absolute lie. Below, we will briefly explain some of the evidence.
WTO Twin Towers Explosion
9/11 On the day of the day, almost everyone who witnessed the explosion of the WTO Towers in mid-air was shocked, but people did not have time to think about it. The US government has prepared an explanation: the building collapsed due to its own weight.
At the beginning, we were told: no one had foreseeed the situation where a large Boeing passenger full of gasoline hit the building, and aerospace produced high temperatures like nuclear reactors, melting the building's steel structure. When people pointed out that the maximum temperature of gasoline combustion is only one-something of the melting point of steel, the "beam failure theory" (i.e., the "cake theory") came into being. The key point of this theory supported by the Emergency Management Bureau (Emergency Management Bureau) is that the fire softens the fragile floor beams, causing a chain reaction and gradual comprehensive collapse of the floor floor.
But the problem with this theory is obvious:
1. Violates basic physics principles.
2. The collapse characteristics of the twin towers cannot be explained.
3. Distort engineering conventions and double tower design characteristics.
4. Inconsistent with the results of the evidence collection investigation of physical evidence.
1) After the government destroyed physical evidence, the scene of
World Trade Center was immediately blocked. People were also threatened with arrest only if they wanted to take photos of "Zero on the scene". Almost all the steel remains were transported overseas (China, India) to melt furnaces to be destroyed. The building performance evaluation expert team of the Emergency Management Bureau, which conducted a preliminary investigation into the cause of the collapse, cannot enter the "site zero point".
Architectural design materials that are extremely important to official theories have not yet been known to the public. If the building structure is described in the official report, up to 20% of the steel known to be used to build the twin towers will be missing. When the report of the Emergency Management Bureau was released, the "On-Site Zero" had been cleaned up.
2) The double tower design can withstand the impact of large aircraft
In fact, the original design of the WTO twin towers can withstand the double blow of a Boeing 707-340 aircraft carrying about 70 tons of gasoline and the fire that accompanies it. The Boeing 767-200 aircraft that hit the double towers on 9/11 had a similar size, carrying only about 30 tons of oil. Each building provides support for the exterior wall composed of steel columns and a central area composed of 47 giant steel columns. The floor beams closely connect the central area to the steel columns of the exterior wall through multiple locking and direct welding, forming the so-called "cylinder in cylinder" structure. This design model, which was first created at the time, was widely used in modern skyscrapers. Just like all large steel buildings, the twin towers are over-constructed several times more than the foreseeable load to resist disasters such as bombs, fires, typhoons, and . The impact of the aircraft only cut off 33 and 24 of the 240 peripheral steel columns of the north and south towers, i.e. about 14% and 10% of the peripheral support structure. The impact trajectory of the Nanta aircraft further suggests that the central area is basically not damaged. In the absence of strong winds or earthquakes, each building can easily withstand the blow of most (more than 2/3) of steel column breakage. In fact, the damage caused by impact and fire of the twin towers is limited to asymmetrically distributed small number of steel columns and several floors. But the twin towers inexplicably collapsed in an extremely symmetrical manner and turned into tiny pieces in the process.
building easily withstood the impact of the plane. The impact port quickly turned black, indicating that there was no fire in the central area.
3) Fire is not particularly serious
Because the fuel of the aircraft is easy to boil and its steam is easy to ignite, so it will burn out soon. The Emergency Management Bureau also admitted that the fuel on the plane was exhausted "within minutes". The subsequent fire is no different from the average office building fire. The impact port quickly turns black after the impact, and the smoke coming out becomes darker and darker - this indicates lack of oxygen combustion. After the impact of the South Tower, 18 people at the top successfully escaped from the building above the impact entrance through the stair passage in the impact area.
Even at the moment of the highest temperature after the impact, there is no evidence that the steel in the building reached a temperature of 700C. This temperature can significantly soften the steel. When the steel reaches this temperature, even in broad daylight, the steel in the fire area will show a bright fiery red color. This is not the case in all known photos or videos. Afterwards, the official inspection of all steel samples also showed that the maximum temperature was only below 300C. In addition, there is no evidence that the central area structure was affected by the fire. It should be emphasized here that due to the good thermal conductivity of steel, its softening degree can be reversed. If the steel becomes soft under the action of gasoline at high temperatures, as the gasoline is exhausted in a short time and the fire temperature drops, the softened steel can restore its rigidity. The South Tower and the North Tower collapsed about one to one and a half hours after the impact. Except for the first few seconds, the temperature in the fire area was only between 200 and 300C for most of the time afterwards.
4) Fire never causes high-rise buildings to collapse
If the World Trade Center Buildings 1, 2 and 7 collapsed due to fire, then this will be the first three complete collapses of high-rise buildings in the history of world architecture due to fires, or other reasons other than controlling blasting. Building 7, the 47-storey World Trade Center, was not hit by planes or large pieces of debris, and only had small fires that were scattered, and it also "collapsed" vertically and symmetrically into a pile of neat ruins.
5) Vertical collapse prompts to control blasting
World Trade Center Twin Towers collapsed in a nearly perfect vertical manner, and at the same time sprayed a large amount of debris around. It is hard to imagine that the impact of the aircraft and subsequent fires can cause such synchronous and symmetrical damage, resulting in a simultaneous and consistent failure of the building structure, resulting in a completely vertical collapse.
official explanation of the theory that the floor is loose and collapsed layer by layer. Since the floor layer mainly moves downward rather than impacts to the side, it cannot be explained that the exterior wall has broken before the upper part of the falling building has reached the area. It is also impossible to explain that the extremely solid steel column group in the central area does not cause the buildings to fall sideways like trees, but rather hits each other and razes themselves to the ground.
6) Double tower explosion
If it is a collapse caused by simple center attraction, the floor floor will collapse within the exterior wall, and the steel columns on the exterior wall may be curved. However, even if the exterior wall collapses, the steel column group in the central area should still stand up.
But in reality, the collapse of the World Trade Center Twin Towers is very explosive. Even in the first few seconds when the building began to collapse and the upper part of the building began to slowly fall, a large amount of dust and debris had already sprayed around. In the ruins of the collapsed twin towers, only a large amount of broken steel, paper, and dust remained. Non-metallic substances such as concrete, glass, gray boards, etc. are completely transformed into fine dust particles.
0 South Tower exploded into huge dust 56 minutes after the plane hit, and various debris sprayed around
7) The building crushed in mid-air
0 When the double tower exploded, it produced huge dust clouds that were very similar to the volcanic debris flow. Below the mushroom-like dust cloud that gradually wraps the building, concrete powder can be seen spraying outward at regular time intervals on the exterior walls. The central attraction may explain the phenomenon of concrete being powdered after hitting the ground, but it cannot explain that this phenomenon has begun in mid-air, even when the building just started to collapse.
In addition, the steel that makes up the exterior wall is cut into pieces of the same size and sprayed horizontally for up to 70-100 meters, rather than simply peeling off. The giant central steel column group also disappeared.
For these abnormal phenomena, the official "beam failure theory" cannot be explained at all.
8) The whereabouts of the top of the building have not been delayed
0 The falling speed of the World Trade Center Twin Towers is basically the same as the speed of an object falling in the air. Video data shows that the building collapsed for 15 seconds, only slightly longer than the time when an object falls in the air at the same height. Unless the solid lower part of the building is damaged from top to bottom, the speed of the upper falling will be greatly slowed down or even stopped.
To sum up, the two towers cannot self-destruct due to their own gravity.If a natural gradual collapse occurs, it will never explode into a ball of dust, nor will it collapse at a speed similar to free fall .
Explosion of Building 7
Most people will not have any memory of the collapse of Building 7. Because on 9/11, the mainstream American media just played the scene of the collapse of the twin towers and the portrait of bin Laden. After 9/11, the media never mentioned the collapse of Building 7. This most inexplicable failure case of engineering structure in the history of construction projects was forgotten intentionally or unintentionally.
The fire never caused the complete collapse of high-rise buildings with steel structures, let alone the explosion of the inside like Building 7. This case deserves widespread attention. This modern skyscraper designed to withstand severe fires, typhoons, earthquakes and other disasters (with the CIA secret stronghold and the New York City bulletproof and earthquake-proof emergency command) will suddenly collapse for no reason, which will have a profound impact on the safety of all skyscrapers and the design of high-rise buildings in the future. For this reason alone, the causes and mechanisms of its collapse should be carefully, detailed, and profoundly studied. Unfortunately, after the 9/11 incident, except for the report of the Emergency Management Bureau, which stated that further research was needed, other investigative agencies were completely hands-free, just as Building 7 had never existed at all.
From north to south: the black tall building in front of the North Tower (with antenna) is Building 7. It is about 100 meters from the North Tower.
1) Collapse vertically at an approximately free fall speed, building
7 collapsed vertically neatly and nearly perfectly. The entire collapse process (174 meters) only takes 6.2 to 6.5 seconds, while the same distance a object falls in a vacuum takes 5.965 seconds.
This is 3 seconds after Building 7 began to collapse. The middle area sinks first. Bunches of smoke can be seen on the front of the building. These are all characteristics of controlling blasting.
2) The (non) investigation by the US government's complete collapse of Building 7 is completely inconsistent with all current experience in high-rise building projects. It is the largest and least understood project failure in the history of world architecture. The wreckage should be studied in detail and recorded on site before being transported to the warehouse for further research in the future. But the U.S. government spent only $600,000 to investigate the collapse of three skyscrapers. The Emergency Management Bureau, which is responsible for this investigation, only relies on a group of volunteer experts to conduct the investigation. Except for three days of "leading a group tour", this group is not allowed to enter the "on-site hour". Building
Building 7 collapsed perfectly within its boundary without causing any damage to the surrounding buildings.
In May 2002, the Emergency Management Bureau released its investigation report. The report confirmed that the collapse of the three skyscrapers were all caused by fires, but admitted that there was no clue about the mechanisms of how the fire caused unprecedented disasters.
Emergency Management Bureau's investigation report said:
"The specific situation of the fire in Building 7 of the World Trade Center and how the mechanism of the collapse of the building is still unknown. Although the diesel stored in the building contains a large amount of energy, the most likely hypothesis is only very low. Further research, investigation, and analysis are needed to solve this problem." When the
report was released, all steel materials that could have been easily determined on the "site zero point" that caused the collapse was transferred and destroyed. This action to destroy evidence was carried out under the opposition of fire safety officials, firefighters, and victims' families.
It is not easy to demolish a steel-structured skyscraper. Steel tends to bend rather than break unless it is hit by a strong explosive force. Even if several floors of the building are destroyed, the entire building will only fall to one side instead of automatically breaking. To make a building collapse neatly into its own boundaries is the essence of controlling blasting. Each structural part must be destroyed in an exact order. Even if some pillars are cut off for one second, they will cause the building to fall to one side and cause damage to the surrounding buildings. The vertical collapse of Building
Building 7 starts from the middle, while the exterior walls on both sides then fall toward the central axis.This is a very classic case of controlling blasting: the central part of the column is destroyed first, and then the peripheral pillar is destroyed, so the middle part of the building collapses first and pulls the peripheral part towards the center. This completely avoids damage to surrounding buildings.
Summary What does this mean if the World Trade Center Twin Towers and Building 7 collapsed not because of a fire, but because of controlled blasting? Can al-Qaeda, led by bin Laden, calmly install explosives in the World Trade Center? If it weren't them, who would it be?
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-