Collapse Of The Twin Towers

When the Twin Towers collapsed on 11th September 2001, the sound they heard around New York was roaring or distant thunder. The South Tower will go first. The upper layer is temporarily inclined before it falls and pushes the building directly against the ground. Many people are dying, and many people are lucky to live. After 29 minutes, the result of the collapse of the North Tower was the same as the first time. The two symbols of the American economy disappear and even a relatively new 47-story tower, the so-called World Trade Center Seven, remains on the other side of the building.

After the building collapsed, the outer pillar at the bottom of the South Tower was still built. The National Institute of Standards and Technology (NIST) investigated the collapse of Twin Towers and 7 WTC. The survey investigated the cause of the collapse of the building and the fire protection measures taken and evaluated how to improve the fire protection system in future buildings. A survey of the collapse of WTC and 2 WTC was completed in October 2005 and a survey of 7 WTC was completed in August 2008. If this does not happen, the tower may stay standing

After tremendous pressure and long delay, the Bush administration asked the analysis of the WTC 7, National Institute of Standards and Technology, completed at the end of Bush's term of office in collapse of the twin tower completed in 2005 and the president's term of office in November 2008 did. Many people think that NIST is an independent scientific institution, but in fact NIST is a government agency under the Ministry of Commerce and has partnered with the government's administrative department. With that in mind, let's look at the analysis provided by NIST in part 3.

The Federal Security Building and Twin Towers summarized the Fire Safety Survey conducted by the US Commerce Department's National Institute of Standards and Technology (NIST). The purpose of the survey was completed on April 6, 2005 to investigate the building structure, materials used, and technical conditions that led to the disaster results of the World Trade Center. The grounds for the investigation were that this report was that the fire protection of the twin tower steel structure was blown away by the first impact of the aircraft and if this did not happen the tower could remain standing. The fire weakened the truss supporting the floor and hung the floor. The depending floor is pulled over the outer pillars to the position where the outer pillars are bent inward