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so they could crash them with full tanks allowing 10,000 gallons of jet fuel to spill down igniting the tower in order to heat up and weaken its steel structure. Once that portion of steel weakened from the intense heat, the portion it was supporting came crashing down causing a chain reaction of destruction.
not only that, they hijacked
cross-country flights nearby the target, so they knew they would be fully fueled
although the video does make the (seemingly) accurate point that dozens of high rises have burned for hours on end and never collapsed, but i feel people that use this comparison cant see the forest for the trees.......those buildings werent hit by planes.
now we could argue back and forth over whether or not the impact of 100 tons of metal hitting the side of a building at 500 miles per hour would have any effect of that buildings structural integrity, but lets look at the building that didnt collapse first
the reason the other buildings didnt collapse from the fire was because the steel support beams are surrounded by a fireproof casing that prevents them from heating up and weakening in a fire
in the twin towers, that casing was stripped off by the initial impact of the planes, exposing the steel to the fire and causing it to heat up and weaken very fast
another question, why did they collapse so fast once the steel structure failed? well the planes hit about 1/3 of the way up and 1/4 of the way from the top of the towers, the total weight of each tower was about 500,000 tons, assuming even distribution that puts 165,000 tons and 125,000 tons above each crash site, repsectively.
assuming the structure failed across one floor the top of the tower would have fallen approximately 3 meters before hitting the floor below it, this would result in a speed of about 5.5 m/s. 125,000 tons decelerating for 5.5 m/s to 0 almsot instantly (as is the case in a solid object hitting another solid object) would result in a force of nearly 7 million tons (that would be like stacking 14 more world trade center towers on top of tower 1) the one that was hit 1/3 of the way up would have produced over 9 million tons of force, its no wonder it collapsed so fast.
and thats assuming they only fell down 1 floor, if they fell two floors the force is doubled
now, another favorite chestnut of the conspiracy theorists is that the towers were designed to withstand the impact of a commercial aircraft, i have a few things to say on that
1: design and practice are often two very different things, its possible this was simply a failure of the design
2: they were designed to withstand the impact of a boeing 727, the largest commercial aircraft in service at the time of the towers design, the 727 is about 20% smaller and over 60% lighter than the 757
3: both points 1 and 2 are moot, the towers DID survive the initial impact of the planes (they stood for an hour after the crash) it was the fire and failure of structural steel the caused the collapse
yes, the towers were designed to survive a plane crash
yes, the towers were designed to survive a fire
unfortunately, they could not survive both at the same time
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Topic: 9/11 Conspiracy (Read 263 times)