these buildings were dropped exactly where they wanted them to, it's accomplished by undercutting the structure with shaped/cutting charges to blow out the lower side of the building where they want it "lean"...
they intentionally force the building to begin falling...
then they blow the other side to allow it to continue.
it's like chopping a wedge out of a tree till it starts to lean and then chopping the other side to let it go the direction it is leaning.
the twin towers in particular were a very radical open floorplan design that relied on those infamous horizontal zig zag trusses that pinned the outer walls to the central core. those trusses were then topped with corrugated metal pans that held the pumped concrete which made up the floors.
the buildings were pretty much empty, all air, once the trusses were heated they began to sag, placing tremendous pulling forces on the connections that kept the building intact. you can actually see the deformation on the outer skin of the towers before they fell.
the thing is you're dealing with massive damage to multiple floors of the building, then you're heating what is left of that supporting structure well beyond the point of structural stability. think about how you make a sword, you heat it up to make it mailable, then you apply force to it. thats exactly what was happening inside the towers while the fires burned. you've got tons of forces being put onto the structure in ways they weren't designed for (because of the damage done by the planes), while being heated. each time a zig zag truss sagged, it pulled on the outer skin till it failed and then put even more stresses on a structure that was already in critical condition.
all that weight, all that force, is pressing down on the damaged area, pulling and stretching and twisting and compressing and shearing... all in ways the structure wasn't designed for.
once the damaged area can no longer support the weight above the damaged area, the damaged area pretty much detonates... the forces are so great that it's like a steel cable snapping, it's a catastrophic failure, and the undamaged portions of the building above the damaged area falls through the damaged area into the undamaged area below.
it's like a giant chopped off the top of the tower then dropped part of the trade center into the trade center.
fire alone won't do it, you need the damage and then the fire.
lol, no.
these buildings were dropped exactly where they wanted them to, it's accomplished by undercutting the structure with shaped/cutting charges to blow out the lower side of the building where they want it "lean"...
they intentionally force the building to begin falling...
then they blow the other side to allow it to continue.
it's like chopping a wedge out of a tree till it starts to lean and then chopping the other side to let it go the direction it is leaning.
the twin towers in particular were a very radical open floorplan design that relied on those infamous horizontal zig zag trusses that pinned the outer walls to the central core. those trusses were then topped with corrugated metal pans that held the pumped concrete which made up the floors.
the buildings were pretty much empty, all air, once the trusses were heated they began to sag, placing tremendous pulling forces on the connections that kept the building intact. you can actually see the deformation on the outer skin of the towers before they fell.
the thing is you're dealing with massive damage to multiple floors of the building, then you're heating what is left of that supporting structure well beyond the point of structural stability. think about how you make a sword, you heat it up to make it mailable, then you apply force to it. thats exactly what was happening inside the towers while the fires burned. you've got tons of forces being put onto the structure in ways they weren't designed for (because of the damage done by the planes), while being heated. each time a zig zag truss sagged, it pulled on the outer skin till it failed and then put even more stresses on a structure that was already in critical condition.
all that weight, all that force, is pressing down on the damaged area, pulling and stretching and twisting and compressing and shearing... all in ways the structure wasn't designed for.
once the damaged area can no longer support the weight above the damaged area, the damaged area pretty much detonates... the forces are so great that it's like a steel cable snapping, it's a catastrophic failure, and the undamaged portions of the building above the damaged area falls through the damaged area into the undamaged area below.
it's like a giant chopped off the top of the tower then dropped part of the trade center into the trade center.
fire alone won't do it, you need the damage and then the fire.