According to the officially-endorsed Department of Homeland Security’s (DHS) Federal Emergency Management Agency (FEMA) report, entitled “World Trade Center Building Performance Study: Data Collection, Preliminary Observations, and Recommendations,” and published in May of 2002, flaming debris from the Twin Towers caused fires on multiple floors of the building – possibly igniting fuel-tanks in the basement and ultimately leading to its collapse. ![]() Its fall garnered little attention from the media, or even the very officials charged with job of discovering what happened. ![]() World Trade Center 7 was never hit by a plane. If the entire collapse had occurred at free-fall time, the report said it would have taken 3.9 seconds, a second and a half shorter than the actual time.Profile of WTC7 building, as seen from eastern side. Then, in the third stage, after 4 seconds, the building’s collapse decreased in acceleration to again be slower than free fall. In the second stage, between 1.75 and 4 seconds, the building disintegrated at free fall. In the first stage, until 1.75 seconds in, the acceleration was less than that of gravity in other words, slower than free fall. The analysis described three distinct stages of the building’s 5.4-second collapse. The National Institute of Standards and Technology’s final 9/11 report, released in September 2008, analyzed the building’s collapse and found it fell at a rate 40% slower than free-fall time. The recent Facebook post claimed WTC 7 collapsed in "free-fall time," or at the rate of gravitational acceleration, but this is inaccurate. This is because the building’s interior failings did not cause the exterior framing - which was stiffer and stronger than the former - to crumble until the collapse’s final stages. In videos taken outside the building, WTC 7’s collapse appears to happen suddenly and uniformly. (Read more about our partnership with Facebook.) These posts were flagged as part of Facebook’s efforts to combat false news and misinformation on its News Feed. In one Facebook post, an edited image of Tom Hanks in the movie "Forrest Gump" read, "I may not be a smart man, but I know two planes can’t cause three buildings to collapse in free-fall time."Ī second post on Instagram said, "We are supposed to believe two planes destroyed three buildings that were specifically built to withstand a plane being flown into them." ![]() This year, on the attacks’ anniversary, the claim resurfaced. This is one in a long line of conspiracy theories that have proliferated since the attacks that killed nearly 3,000 people. Some claim planted explosives caused it to fall others question how the building collapsed when no plane struck it. A third building, World Trade Center 7, also collapsed that day due to uncontrolled fires.īut conspiracy theorists have been claiming for more than two decades that the collapse of WTC 7, a 47-story building that housed offices for the CIA and Secret Service, was nefarious. 11, 2001, two hijacked airplanes hit the twin towers of the World Trade Center, causing their destruction. Twenty-one years after the 9/11 terrorist attacks, conspiracy theories about how the World Trade Center buildings in New York City collapsed still persist.
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