Why was the world trade tower #7 collapse???

Question

the owner of the tower was shown in a video that it had to be "pulled" is this true? pulled=demolished. the tower collapsed hours after the attacks but that type of demolision can only be set up through days and weeks of preperation. if this is true then why hasnt that been used as proof?

Answer 1

Rumor has it that the building was owned by Larry Goldstien and he had taken out the insurance on that building for some enormous amount few weeks before the 9-11.. I had watched the documentary on PBS a long time ago and they showed that the building was more of a controlled demolition.. especially when there were 4 other buildings surrounding the WTC tower 1 & tower2

Answer 2

. In the chaos of the day, little attention was paid to WTC7, so there is less evidence available on the damage it sustained before it collapsed. However, some questions that you may want to ponder ...
* While it did not receive any direct impact form the planes, how much debris hit at as the main towers collapsed and what damage did it cause?
* To what extent (if any) did the shock or vibrations caused by the collapse of WTC1 & 2 affect the integrity of WTC7?
* Did any unseen damage to the WTC7 foundations occur in the collapse of WTC 1 & 2?
* Did any of the fire suppression systems in WTC7 function?


At 5:20 p.m. EDT on September 11, 2001, 7 World Trade Center collapsed. Since it had been evacuated, there were no casualties.
5:20 pm after two of the bigest towrs in the world fell just 1/2 block away.

Answer 3

I was there. I saw the towers fall. I frequented those buildings for advance education and recreationally. They were hubs of activity during the weekly workday. I feel extreme sadness and loss whenever I'm in that area mainly because I spent most of my youth there and it has irrevocably changed. There was a certain special animation in faces that now look back at me with vacant eyes.

The buildings around the two that fell had to be razed - their foundations were unstable. There was damage to several buildings in that area - not just those that comprised World Trade Towers. And after all this time there is still corrective construction going on.

Answer 4

The building collapsed because the shaking of the ground caused by the falling of towers numbers 1 and 2 destabilized it to such a degree that it finally keeled over, as well as to fires that were caused by falling debris from the other two towers.

Buildings collapse hours after earthquakes all the time.

Answer 5

At 5:20 p.m. EDT on September 11, 2001, 7 World Trade Center collapsed. Since it had been evacuated, there were no casualties.

In May 2002, the Federal Emergency Management Agency of the United States (FEMA) released a report on the collapse. [3] FEMA made preliminary findings that collapse was due primarily to fires on multiple stories caused by debris from the other two towers, and not to the actual impact damage of 1 WTC and 2 WTC as they collapsed. The report noted that, prior to this collapse, there was no record of the fire-induced collapse of a large fire-protected steel building such as 7 WTC. The report did not reach final conclusions, and outlined a number of issues that needed to be explored with respect to the cause of the collapse. Specifically, FEMA made these findings:

“Loss of structural integrity was likely a result of weakening caused by fires on the 5th to 7th floors. The specifics of the fires in WTC 7 and how they caused the building to collapse remain unknown at this time. Although the total diesel fuel on the premises contained massive potential energy, the best hypothesis has only a low probability of occurrence. Further research, investigation, and analyses are needed to resolve this issue.” (Chapter 5, pg 31.)

On July 22, 2004, the 9/11 Commission Report was released, but made no mention of 7 World Trade Center.

In response to FEMA's concerns, the Commerce Department’s National Institute of Standards and Technology (NIST) has conducted a three-year, $24 million investigation into the structural failure and progressive collapse of several WTC complex structures, including 7 World Trade Center. The study included not only in-house technical expertise but also drew upon the knowledge of several outside private institutions, including the Structural Engineering Institute of the American Society of Civil Engineers (SEI/ASCE), the Society of Fire Protection Engineers (SFPE), the National Fire Protection Association (NFPA), the American Institute of Steel Construction (AISC), the Council on Tall Buildings and Urban Habitat (CTBUH), and the Structural Engineers Association of New York (SEAoNY).

On April 5, 2005, NIST released its report on 1 WTC and 2 WTC. On June 20, 2005, NIST asserted in a press release that its report on 7 World Trade Center would be released "at a later date."

Despite FEMA's preliminary finding that fire caused the collapse, some individuals and groups have presented alternate viewpoints and theories, usually as part of a larger belief in a 9/11 conspiracy.

Answer 6

I've seen that to. The building seems to have collapsed in such a way that would prove explosives were used. The middle collapsed, followed by the outsides.

On towers one & two, they collapsed straight down, because the structural integrety of the buildings had been compromised (jet fuel superheating the support columns, etc.)

Answer 7

The Towers collapsed due to the extreme heat that melted the steel beams holding the structure of the buildings.

Answer 8

My aunt worked in tower 7 - it was damaged from the heat and destruction of the other 2 towers...They may have had to demolish whatever didn't fall on its own.

Answer 9

the different poster gave a good account of ways the development fell. besides, the Wiki internet site under provides quite a few diagrams and photos of the wear and tear that surpassed off from the fall down of WTC-a million, and the fires that broke out interior the development.

Answer 10

I remember that the magnitude of the damage to surrounding buildings made some of them unsafe. Several were simply pulled down as it was the safest thing for them. They could not structurally be fixed.