alabuck wrote:
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You're partially right, carpenter patriot. Imagine a bunk bed that is 150 beds tall. Each mattress is supported and held in place by the lip of each mattresses' bed-rails. The inward-angling lip of the mattress frame is taking on the roll of the "angle clips" used in building the WTC to support each of its floors. The mattresses will represent the floor(s). The 4 corner posts of each bunk bed simply hold the bed rails in place.
Now, suppose there's a fire in bed 100 (from the bottom). As the temperature from the flames rise and the flames grow closer to the corner posts and bed frame, the metal bed frames and the bed posts begin to bow/bend outward and downward, away from the mattress. The weight of the 50 upper beds act to add pressure on the heated bed frames and the corner posts, causing even more bending/bowing.
Eventually, the bending/bowing of the bed frame extends so far as to allow the mattress to slip through the space between the bed frames holding up the mattress. The mattress falls through, onto the bed below. With the burning mattress no longer in place, acting as an outward force against the bed rails and corner posts, the bed frame and posts fall inward, toward the inside of the bed structure. This occurs because the heated metal is weakest near the flames and strongest near the top. As such, the outward bowing would occur closer to the bottom of the mattress; allowing it to slip from place.
The "action" here is the weakened posts and rails have bowed OUTWARD & DOWNWARD at the bottom. The "reaction" is that the unheated portions of the rails and posts, close to the bed above, are now INSIDE the vertical line that used to exist between the top and bottom of the posts and frames. They are now off-center and the posts and frames are further apart at the bottom. Hence the mattress slipping through and falling onto the bed below it.
The beds above, without the vertical support of the bed that caught fire and collapsed, now lose their support and collapse into the space that the burning bed had occupied. As each bed above falls, its force and inertia causes a chain-reaction of the beds above to collapse on top of each other; in a sort of domino effect. The weight and rate of fall of each bed and frame, above the bed that caught fire, simply adds to the mass and energy being dropped on each subsequent bed below.
This "collapse-characteristic" was designed into the WTC by using the modular design. Without any overpowering outside forces (even the airliner(s) hitting the building(s) wasn't enough to force an outward fall of the building), the building would collapse inward.
My apologies if I'm still not making myself clear. If I'm not, let me know and I'll try a different analogy.
---------- br You're partially right, carpenter pa... (
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You got me thinking.Now say you hit that cans top off center(even a ways off center. Would the design of the towers actually correct the off center impact to a degree, back towards the center. Making it a very vertical looking collapse? Explaining the controlled demolition theory?