On 9/11, why didn't the floors that weren't hit by the plane ( 57th, 63 etc) hold the building?

Question

I did the math on this. Being generous, lets say that floors 108- 70 were damaged in the first building. Even though the top floors were fine other than smoke. That's 50 story's. the building had about 60 floors that were perfectly fine, other than smoke. The building fell in 8 seconds. What happened to the lower floors? Why didn't they stop, or even slow the fall? Surely they were strong enough.

Answer 1

"I did the math on this," you say. No, NIST (the National Institute of Standards and Technology) "did the math" and their report is well worth reading.

Answer 2

Because the plan was to pull the buildings to begin with. No other building in history has ever collapsed due to fire alone. The fire being so hot that it melted the steel and weakened the frame is bull. All other buildings in the world....much weaker than that...it took rigged explosions for them to collapse. Building 7 was admittedly "pulled" by the owner. There were explosives rigged in the building. It has been recorded that security in the buildings days before 9/11 was greatly reduced, and bomb sniffing dogs were not going to work. Explosions were heard on lower level floors...as well as fires breaking out on the first few levels......VERY far away from the crash. Not to mention that anytime a catastrophe happens to a building the area is not touched until a full investigation can determine the cause of malfunction....so why was the cleanup crew instructed to quickly remove the debris and bring it to an undisclosed location? No full investigation was ever done. And the only explanation they can give is that fire caused the collapse. Common sense would say that is a lie. The building first to collapse was also the last to be hit. The first building was burning for quite some time before the other building was hit. Common sense would also say that a fire burning longer would cause more structural damage, and result in the building burning longest to collapse first. How, also could a plane hit the pentagon, but leave a hole that could not not possilby be from a plane that size. Did the plane magicly shrink before it hit? The goverment feeds lies. They hide too much...calling it "national security"......How about this....the report of Building 7's collapse was aired some 30 minutes BEFORE the actual collapse on some networks...such as BBC NEWS. Some good documentries to see a lot of this information



911/ Road to Tyranny

911 Truth Rising

Loose Change

Loose Change Final Cut

Answer 3

I'd like to see some source defending the official story besides NIST and that tired old Popular Mechanics article. These are shameless sources and NIST's constant revision of their story to try to reconcile it with actual physics has stripped them of any credibility. They lie like children: unconvincingly.



The answer is, because it was a controlled demolition. Forget NIST's meandering, mind-numbingly complex fairy tale of coincidence and theoretical physics. I can tell you in one sentence: it was a controlled demolition. Plain and simple. This is why I laugh at people who cite Occam's Razor to defend the official story.



If the NIST report is correct, then we need to rebuild every skyscraper on the planet, because it turns out an office fire can take down a steel structure in less than 7 seconds. Oops!!



And look at these people still talking about the Pancake theory!!! Don't you know that isn't the official story anymore? NIST dropped that explanation like 2 reports ago because it was disproven. They've got some new story now about how one critical column supported the entire structure, and that column became "weakened." Come on people, if you aren't interested in educating yourselves, the very least you can do is keep up with the disinformation!

Answer 4

Answer:

1. Do a Google or Video search on World Trade Center Building 7. This building was not hit by any plane on that day and it came tumbling down just as fast.



2. Then do a search on the owner for that building, what he ordered to have happen for that building, and do a Google research on the other buildings he owned on that day.



3. Do a little bit more math and you'll have the absolute answer to your question no one can dispute.

Answer 5

There ought to be another investigation. There are way too many questions that have not been addressed. Personally I think certain people were aware of the demolition of the buildings. I could write pages. Investigate 9-11

Answer 6

There were bombs placed in the basement and on the lower floors that began to explode minutes before the first plane hit. This was testified to by firemen and maintainance workers. Their testimony was ignored and dismissed by the 9/11 commission.

Answer 7

The engineering term is known as "pancaking". Once a ceiling collapses it impacts the floor below it with tremendous force. The floor is suddenly hit with the entire mass of the building above it. This is more than enough to collapse the next floor and this continues floor by floor until the entire building collapses. Demolition teams use this technique to safely collapse a building because it falls vertically. All that is needed is to destroy all the supports on an upper floor and gravity does the rest of the work.



The world trade center had a unique architecture. To increase floor space, all the vertical supports were placed in the center of the building. The floor themselves were slung between the walls and these supports. The aircraft which hit the building started an enormous fire. The supports were coated in an insulating material, but the aircraft shattered into millions of metal bits, and these stripped away the insulation. The fire then worked to weaken the supports. They collapsed one by one and the sides of the building bulged outward and split. The center supports could not hold the building up without additional support from the outer walls, so the floor collapsed. This then propagated itself all down the building.

Answer 8

A more pressing (and unanswered question) is why did both towers fall at free-fall speed? There should have been a delay between the upper portions of the towers collapsing and the rest collapsing afterwords.



A free fall collapse only happens with a controlled demolition.

Answer 9

Because THERMITE was used to melt the steel girders.



if you look at the facts, jet fuel just isn't hot enough to cause the MOLTEN STEEL that was clearly dripping from the towers & found at Ground Zero. however THERMITE is & molten metal is a RESULT of thermite. this video shows a fun experiment that gives you an idea of what thermite can do:



http://video.google.com/videoplay?docid=1837033714967622806&q=wtc+2



there are also plenty of witnesses, such as Scott Forbes, who saw 'strange' workmen walking around with cables during the unprecedented power-down which left the towers WITHOUT SECURITY THE WEEKEND BEFORE 9/11 which gave the opportunity to place the thermite. this video takes a short time to buffer but it's worth watching:



http://video.msn.com/video.aspx?mkt=nl-nl&vid=0fcb75ef-c0fd-4d43-9fc0-33524530a8cc

Answer 10

*LOL* What math did you do? mutually as below established circumstances the decrease flooring could help those flooring above them there is not any way as quickly as one floor collapsed the decrease flooring could have offered lots resistance. i understand you may like to come back up with something to "instruct" it replaced into an interior activity. yet evaluate this. If the flooring above weighed one hundred much and the partitions have been designed to stand up to 3 hundred much, this could be adequate. yet as quickly as that first floor collapsed inertia larger the genetic skill of those larger flooring to properly over 1200 much. That in basic terms handed the load skill of the partitions by using a piece of four. So no they weren't sturdy adequate. that could desire to be such as you attempting to end 4 professional protecting linemen from attending to the quarterback all by using your self. you may bring about basic terms like the WTC--Flattened. could you have slowed them down? on condition that they tripped over you. in any different case no they might not have slowed down, and neither did those marvelous flooring of the WTC. They speeded up a sixteen feet according to 2nd squared. it is why it took below 8 seconds for the homes to fall.

Answer 11

Because the airplane was not what brought the building down... The building was imploded, demolished to avoid the cost of having to clean out the asbestos in the building... Insurance payment was higher if it were to be destroyed than the cost of bringing it to current safety ratings, and at the same time it allowed the US to create a Public Enemy #1 so that George Bush could justify his greedy desire to invade other countries while giving fuel to his fear mongering machine.

Answer 12

You're underestimating the weight of the floors in these kinds of buildings. Each floor supports not only the one above it but the ones above those. When the plane hit the building, it could have survived that impact, but the key issue was the fire.



The fire weakened more and more supports in the building, and being an office building full of mostly air and combustible materials, the fire spread and fueled by jet fuel, was VERY hot. When the supports on enough floors got weakened, things started to buckle. But when one floor starts to fall, it puts a tremendous amount more stress on the ones below it. The force of a higher floor hitting a lower floor plus having other floors on top of it is too much for the supports below it.



Think of it as impulse-momentum. A heavier object traveling with some kind of velocity has a very high momentum. To stop this object and prevent the collapse, one has to exert a huge force against it since it has high inertia due to its mass. If the floors are already weakened due to fire, they can't stop the floor above it and like an inelastic collision, they stick together and fall together.



The mass then is greater and the floor below it buckles with it.



As you can see this pancakes down until even the strongly supported floors buckle. Those floors are intact, but the mass above them with its momentum is too much to bear and the collapse continues all the way down.

Answer 13

A falling object gains kinetic energy because it is accelerated by gravity, and loses potential energy as it falls.



I think the story is that the supporting beams of the building were basically melted, so that the building couldn't support its own weight. I think there was 1 or more support beams, and it would seem that the jet fuel + everything else burning caused a structural failure.



I think one thing the consperiacy theorists bank on is the fact that jet fuel burns like 500 degrees less than the melting temperature of the steel, but maybe the it insulated itself to get that hot or something.

Answer 14

For the same reason that a marble dropped from a building can put a hole in a car. A falling object gains potential energy.

Answer 15

rofl.