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Originally posted by brindle
The only modern high rises to collapse from fire were the ones in new york.The only black boxes from airplanes that were never recovered were from the events of 2001.It is pretty clear .
Originally posted by Cassius666Which ones were not found? I suppose they found at least the one from the pentagon.
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Originally posted by okbmd
C'mon guy , how many times are you going to repeat this fallacy before you realize that people are just not buying it ?
Sometimes, though, a building is surrounded by structures that must be preserved. In this case, the blasters proceed with a true implosion, demolishing the building so that it collapses straight down into its own footprint (the total area at the base of the building). This feat requires such skill that only a handful of demolition companies in the world will attempt it.
Blasters approach each project a little differently, but the basic idea is to think of the building as a collection of separate towers. The blasters set the explosives so that each "tower" falls toward the center of the building, in roughly the same way that they would set the explosives to topple a single structure to the side. When the explosives are detonated in the right order, the toppling towers crash against each other, and all of the rubble collects at the center of the building. Another option is to detonate the columns at the center of the building before the other columns so that the building's sides fall inward.
Originally posted by Cassius666
What I want to know is if modern high rise steele frame buildings need to be constructed in a way, that they do not collapse even if all the combustible material inside those buildings burns up.