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Politics : Bush-The Mastermind behind 9/11? -- Ignore unavailable to you. Want to Upgrade?

To: sea_urchin who wrote (9142)	12/5/2004 7:32:27 AM
From: Raymond Duray	Read Replies (1) \| Respond to of 20039

Re: what happened to the WTC towers with a "standard" demolition (as clearly occurred with WTC7). With this method, holes are drilled in the supporting concrete columns at critical places, There were no concrete columns in any of the WTC towers. They were all constructed with structural steel box columns.

To: sea_urchin who wrote (9142)	12/5/2004 1:19:09 PM
From: Don Earl	Read Replies (1) \| Respond to of 20039

RE: "I would go further and say that what happened to WTC1 and 2 is not explained by the use of conventional explosives..." At a certain point in a discussion of this nature, what I don't know about the technical aspects of blowing up buildings becomes a handicap. About the best I can do is stretch a limited amount of personal knowledge in an effort to come up with something that makes sense to me, but may be subject to errors a layman is prone to. We know there were pools of molten metal in the basements of the towers. Thermite is a reasonable explanation for its presence. I've also seen speculation that aluminum in the planes reached temperatures high enough to cause it to burn, but the theories about how it got into the basements strike me as far fetched. Thermite is not an explosive. It's an incendiary. If you do a search on it, there are more than a few sites that explain everything about it, including how to make it and how to ignite it. The "How stuff works" site talks about pre weakening a structure before setting off an implosion. I may not be correct on this point, but the mental picture I have of the columns is something that would be about like a section of bamboo. Once they were all put together, each column would amount to a building long tube, with sections every few stories where it's attached. It seems to me that if one were to install a load of thermite near the top of the resulting tubes, it would automatically burn its way through each of the attaching points all the way down. When its job was done, all the liquid metal would end up in the basement, with the attaching points chewed through all the way down. Among other things, this would also explain reports by firemen finding smoke every few floors on the lower levels. So, at this point, around an hour after the plane hits, the structure is pre weakened and it's time to implode the building. The next step is to take out the core at the base of the building, and since that is the strongest part of the structure, it's the place that requires the most explosive power. My guess is the ticket would be to chop out a piece maybe 10-20 long, so the entire core settles, putting stress toward the inside of the building. The shock of the explosion, combined with the core slamming into bedrock, produces a seismic signal able to be picked up miles away, and strong enough to vibrate nearby cameras. Once the core has a few seconds to settle, its time to detonate the charges on the upper levels. Since safety is not an issue, and blast blankets would likely cause embarrassing questions, they weren't used. The result was the ejection of large quantities of debris, that would normally be contained in a conventional implosion, as the implosion of the core progressed down the inside of the buildings. The weight of the core on the floors would cause them to form a kind of funnel shape, angling the blast waves and ejection of debris up and out. Little if any explosives were used on the exterior columns, as once the core was gone, they would automatically shear off along the lines of the pancake theories presented on PBS. The explosions took place deep inside the buildings and were largely invisible except for telltale plumes of debris being ejected ahead of the collapse. The weight of the collapsing buildings ground them into powder, and the shock waves from the exploding core sent the lighter powdered fragments flying in all directions. I'm sure if any demolitions experts eventually become involved in the investigations, they'll be able to explain it a lot better than my arm chair, layman's version, but until that happens, that's about the best I can do. If nothing else, it covers the anomalies not addressed in the official theories, and explains why, contrary to law, it was decided to destroy as much physical evidence as possible.