There is also a final report of the WTC 7 draft available for anyone to read. Question 33 asks, "Did investigators consider the possibility that an explosion caused or contributed to the collapse of WTC 7?" NIST explains that yes, that possibility was considered, however, there was no evidence of a "blast event." Timing the fall of each of these stages was done by tracking the brightness of a pixel as the building fell onto itself and other numerical analyses.
#Collapse blast free free#
Stage 1 was the building falling slower than free fall, Stage 2, the building was in free fall, and Stage 3 was, again, the building falling slower than free fall. NIST stated that the fall of WTC 7 happened in three stages. How can NIST ignore basic laws of physics?" NIST answered that in the draft WTC 7 report (released Aug. Question 32 on NIST's FAQ list asks, "In a video, it appears that WTC 7 is descending in free fall, something that would not occur in the structural collapse that you describe. The collapse of column 79 led the rest of WTC 7 to free fall. Diagram 1 (see below) is a typical WTC 7 floor. Question 9 on NIST's FAQ list asks, "How did the fires cause WTC 7 to collapse?" The NIST answers that the heat from the fires caused beams and girders in the building to expand, therefore creating a chain reaction that caused an extremely important column to fall. The fires then spread to WTC 7 and deformed structural supports, which led to it collapsing. The fires then grew because the sprinkler system and the city's water supply system had both failed to turn on and douse the fires. Question 8 on NIST's FAQ list asks, "What caused the fires in WTC 7?" The NIST says that the debris from the collapse of WTC 1 ignited fires. NIST, a non-regulatory agency of the Department of Commerce, operates a physical science laboratory that specializes in development of technologies of measurement and engineering standards that make materials and structures safer. In response, Jonathan Griffin, a public affairs officer who handles buildings and fire inquiries to the National Institute of Standards and Technology (NIST), sent Lead Stories a FAQ list about the World Trade Center Building 7 investigation. Many of the people in the video said that there had to have been a controlled demolition or explosives nearby to cause this kind of collapse. The almost six-minute video has interviews with numerous physicists and engineers saying they didn't believe an office fire caused the free-fall collapse of Building 7. (Source: Facebook screenshot taken on Tue Oct 5 14:33:21 2021 UTC) This is what the post looked like on Facebook at the time of writing:
The video on the post opened with: Did you know that a third tower fell on 9/11? At approximately 5:20 PM on September 11th, 2001, World Trade Center Building 7 collapsed in 6.5 seconds from normal office fires, according to the government's final report. The video was captioned, "The Official ReThink 911 video".
The claim appeared in a Facebook post (archived here) where it was published on September 9, 2021. Unchecked fires caused the building to warp and collapse hours after the initial attack. Debris from the attack on the first two World Trade Center buildings started fires in WTC7. When the first two buildings went down, the sprinkler system was then cut off from the remaining buildings.
All the World Trade Center buildings shared a sprinkler system. Did World Trade Center Building 7 (WTC 7) collapse due to a controlled explosion right after the collapse of the first two World Trade Center buildings in New York City on September 11, 2001? No, that's not true: Investigators found no evidence of such an explosion and specialists found it was caused by fire.