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Originally Posted by Janey
I read in the Toronto Star some time around Sept 12 or 13 of that year, that the towers collapsed because the momentum of the airplanes impacted and severed/severely damaged the internal core structure of the two towers. That is, the structural support from which the rest of the build was hung.
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Both North tower and South tower were designed to take a direct airplane hit. Did you see the limited damage the 757 did to the Pentagon? Also, how does that explain the top floor caving first? It should have collapsed from near the center, not the very top. Not trying to be argumentative, but I wrote into the Star about their shotty work and they never responded.
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Originally Posted by Janey
Also, that the planes exploded, and burned inside the building, not outside, which would explain why the internal support structures further degraded, and why the aluminium on the outside does not look warped or hot, and why somebody could/would stand at the opening. it was probably the coolest area with the freshest air.
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Where did the heat from the fire go? A fire inside of a building would creat some heat that would want to escape. That same heat that was able to meraculously melt and warp the steel frame, but was unable to effect aluminum, which ahs a much, much lower melting temperature.
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Originally Posted by Janey
Once the impact and fire damage had taken it's toll, the support of the building above the impact zone gave way, and then what you would have is what is in effect the equivalent of any normal sized office building (from the point of impact to the roof) being dropped ontop of the building below. To my eye, that's exactly what it looked like, a heaveyload falling and causing increasing damage as it gathered spead and mass downwards.
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I can understand some of the supports giving way between the impact and the fire, but why did the top floors of both towers collapse straight down first? There was no smoke coming from the top of the building as most of it was coming from the blown out windows and the crash holes in the buildings. It is logical to assume that the heat was following a similar path to escape the building. The heat was traveling upwards along the frame, but the initial collapse was at the very top floors. It doesn't fit.
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Originally Posted by Janey
But to get back on topic, I would love to see pictures of WTC7 from the side facing the two towers, to see how much damage it sustained when the big ones collapsed. (as first pointed out by balderdash). Then we can really talk about WTC7.
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I'm still looking.
Try:
http://www.wtc7.net/videos.html
http://www.wtc7.net/collapsecause.html