How can the Twin Towers collapse like that (after planes hit) was there an explosion at the base?

Question

Fire can’t melt building beams and if it did, the building would’ve bent over, am I the only person in America that has a brain?

Answer 1

Question - How many jet airliners fully loaded with fuel have hit skyscrapers not accidently but on purpose at full throttle?

So there is nothing to compare it to, so therefore you get a lot of speculation and half-baked theories that's what you get

And... before you mention the famous "building 7" that fell down that wasn't hit by planes it WAS hit by falling debris from two large buildings (how often does that happen?) and every other building in the area was also damaged and could not be saved (building 7 contained diesel fuel which the others didn't for the generators)

Answer 2

Structural failure. The North Tower was hit around the 80th floor or so. The plane hit the building directly on one of its facades. The South Tower was hit lower down--probably between the 50th and 60th floors--and the plane sheared off a corner of the building. Because of the design of the buildings--central elevators and stairwells--those above the crash site in the North Tower were trapped because the plane destroyed that central core. Some people in the South Tower above the crash site did escape because the central core was largely intact.

So you have big chunks missing from the building and nothing holding up the 25-30 or so stories for the North Tower and practically half the South Tower. If you watch footage of the collapse--something I really don't want to do again--you will see how the South Tower crumbles at an angle, sort of falling away from a central point. I'm pretty sure this destablized other buildings at the complex, but it's no doubt the North Tower was going to collapse as well. IIRC, it sort of pancaked as it collapsed.

I strongly doubt there was an explosion at the base on 9/11. Remember, in 1993, terrorists did detonate a bomb in the parking garage of one of the towers, and they stood for over eight more years before they crashed the planes into them. So I don't think another explosion at the base would have done it; it would take some pretty powerful explosives, and people would have noticed.

The only conspiracy I can think of on the U.S. end is one of ignorance on the part of the Bush Administration.

Answer 3

There was about 90,000 liters of high grade aviation fuel burning. The fires were centrally places & far hotter (maybe 800C) than needed to soften (400-500C) & weaken the steel central structure. The center of the floors sagged, pulling the perimeter of the building inward. That caused the top to collapse straight down.

With the tower collapsing, there was never enough force for the tower to do anything except collapse on its'self.

It is amazing how many people, who are NOT demolition experts by trade, think they know exactly how a pair of thousand foot towers will collapse.....when even an expert is unlikely to predict is exactly.

Answer 4

The commerce center Towers fell as a effect of the flooring failing. The flooring have been created from some thing mentioned as a metallic truss and have been fireproofed with spray on fireproofing. whilst the planes hit, they knocked the fireproofing off inflicting the metallic to be uncovered to warmth. metallic trusses are very companies to fireside, so as that they started out to tug and destroy from their connections. whilst they broke, the precise of the tower went right now down. If one important area of those towers fail, the completed tower fails. to greater powerful make sparkling this, in simple terms think of a field and interior the process this field, there's a smaller field. The smaller field is the important middle, the "backbone of the development" The middle holds elevators and emergency stairwells. the massive field is the floor area. In between those 2 boxes are flooring that are related to each end. whilst adequate of those flooring fail, the outer wall, is being pulled on and loosing help, that's why the tops of each and every tower fell. wish i ought to help. EDIT- Please do no longer fall for the conspiracy concept . That concept has such assorted holes and lacking puzzle products, this is going to go away you much greater perplexed.

Answer 5

Fire can melt building beams and that is what it did, and if you had a brain you would have realised that if there was an explosion at the base the towers wouldn't have fallen from the top to the base.

Answer 6

http://architecture.about.com/library/weekly/aawtc-collapse.htm