What makes a building collapse into a pile of dust?
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$2 Answers
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$
Since the YouTube video is of WTC 7 collapsing, perhaps the easiest way to answer your question would be to detail how IT collapsed:
"As the North Tower collapsed on September 11, 2001, debris hit 7 World Trade Center, causing heavy damage to the south face of the building. The bottom portion of the building's south face was heavily damaged by debris, including damage to the southwest corner from the 8th to 18th floors, a large vertical gash on the center-bottom extending at least ten floors, and other damage as high as the 18th floor. The building was equipped with a sprinkler system, but had many single-point vulnerabilities for failure: the sprinkler system required manual initiation of the electrical fire pumps, rather than being a fully automatic system; the floor-level controls had a single connection to the sprinkler water riser; and the sprinkler system required some power for the fire pump to deliver water. Also, water pressure was low, with little or no water to feed sprinklers.
After the North Tower collapsed, some firefighters entered 7 World Trade Center to search the building. They attempted to extinguish small pockets of fire, but low water pressure hindered their efforts. A massive fire burned into the afternoon on the 11th and 12th floors of 7 World Trade Center, the flames visible on the east side of the building. During the afternoon, fire was also seen on floors 6–10, 13–14, 19–22, and 29–30. In particular, the fires on floors 7 through 9 and 11 through 13 continued to burn out of control during the afternoon. At approximately 2:00 p.m., firefighters noticed a bulge in the southwest corner of 7 World Trade Center between the 10th and 13th floors, a sign that the building was unstable and might collapse. During the afternoon, firefighters also heard creaking sounds coming from the building. Around 3:30 pm FDNY Chief Daniel Nigro decided to halt rescue operations, surface removal, and searches along the surface of the debris near 7 World Trade Center and evacuate the area due to concerns for the safety of personnel. At 5:20 p.m. EDT on September 11, 2001, 7 World Trade Center collapsed." -- http://en.wikipedia.org/wiki/Wtc7#Collapse
http://en.wikipedia.org/wiki/Wtc7#Collapse
http://wtc.nist.gov/progress_report_june04/appendixl.pdf
http://wtc.nist.gov/media/P4InvestigationofActiveFireProtection.pdf
http://wtc.nist.gov/NISTNCSTAR1-4.pdf
http://graphics8.nytimes.com/packages/pdf/nyregion/20050812_WTC_GRAPHIC/911...
http://video.google.com/videoplay?docid=6790722824543352916&hl=en
http://wtc.nist.gov/media/ScheuermanStatementDec2006.pdf
http://www.nist.gov/public_affairs/factsheet/wtc_qa_082108.html
http://www.firehouse.com/terrorist/911/magazine/gz/hayden.html
http://www.firehouse.com/terrorist/911/magazine/gz/boyle.html
http://www.nytimes.com/packages/html/nyregion/20050812_WTC_GRAPHIC/Nigro_Da...
You can leave an optional "tip" with Mahalo's virtual currency, Mahalo Dollars. If you are asking a difficult question that might require some research, or if you'd like a wide variety of feedback, a higher tip often leads to more answers to your question.
M$
I almost said the same thing on the last comment -- pretty much everyone seems to have made up their minds already (at least the ones discussing it here). And I also feel like the evidence is much stronger on one side of it.
Up until a few days ago I was sure this was all a load of crazy conspiracy nonsense but now its actually making more sense than anything else to me. All I can say is, take the red pill.
I don't believe any of that. Can you find any video that shows such extensive damage? Can you find any other buildings like that which caught on fire and after any amount of time just suddenly imploded straight down into the ground? The firefighters didn't say they wanted to halt rescues because of creaking sounds. They said it because they were told it was going to be (intentionally) blown up:
This video:
If you watch the beginning, the person zooms into several floors of WTC 7 that are visibly aflame. Then, the tower collapses.
This site
http://gcn.com/Articles/2008/08/21/Computer-modeling-confirms-cause-of-911-building-collapse.aspx
gives a lot of detail on why it happened.
This is not the only time that fire has caused a building to collapse.
http://lawhawk.blogspot.com/2008/05/fire-causes-collapse-of-delft.html
Talks about a fire in a 14 story building that caused it to collapse--there is also video of it occurring.
Sure, a few floors were on fire. That explains it.
The computer model was crap and the Delft building they intentionally let it burn itself out, and the completely roasted part fell but nothing like what happened to WTC 7. Look at the aftermath, its not a pile of dust by any means:
http://www.nos.nl/nosjournaal/artikelen/2008/5/14/140508_delft_flup.html
It didn't totally collapse because it was a smaller building and had not had two major building collapse right next to it. Remember, WTC 7 was also damaged by debris. Furthermore, the fire in WTC 7 was more widespread than in other fires. It did not start at one location and spread out. It started in several locations. That is going to make a difference on the amount of damage and the speed the building is damaged.
I have the feeling this is one of your "don't confuse me with the facts my mind is made up" arguments. So, I'm not sure why I'm wasting my time pointing these things out. I've yet to see one shred of physical evidence that suggests it is anything else.
Or how about this one:
http://www.youtube.com/watch?v=fHQOqnaIce0it would be interesting to see at top view, you can hear to initial charges, then the entire structure comes down. you can see simultaneous charges on floors near the bottom and near the top. you need to weaken the core support and have the chain reaction of charges for a building to come down like that.