Oh good wasnt just me... I think TOM is arguing for a conspiracy?
My point was most buildings are not nearly as 'rock solid' as people think they are. Most are held up thru an interesting act of moving stress around.
For example the garage you just built. Lets say I was to remove the 2x6's you probably used to hold all the roof trusses up (the one across the ridge line and if you dont have it there you probably have them somewhere). At this point you have put the roof on and the 8x10 sheets of plywood for the roof would hold it together. It would even seem pretty solid. But it would be structurally weak and a good wind would probably knock it over. But with that small chunk of wood in place it will last for years. As the lateral stress can be distributed across all of the trusses instead of one or two.
My point? Is it doesnt take much to structurally weaken a building. In fact that is exactly how most implosion work is done. By basically blowing out the stress points in a building. They usually do it with much less than a truck of explosives. They then let gravity do the work.
As for WTC7 it is a fairly simple case of the water supply in the area having a massive leak in it due to 2 rather large buildings collapsing on top of the water mains and lack of power to the area as well after the collapse. Then a bunch of debris cutting thru the building and causing electrical fires which caused real fires. At that point there was no water or power (for the pumps) to put the fires out. This caused structural fatigue in the building. Also structural collapse from fire is common. Many times they will pull the firemen out because the building could come down on top of them. At that point they just contain it and let it burn out.
It was pretty much on fire all day. Why was that? Maybe the firemen being killed earlier in the day had something to do with it, and no water pumps working?
WTC 7 coming down was just due to a lack of the fire suppression system working and structural weakening of debris hitting the outer skirt of the glass column.
On a different note column buildings such as WTC1,2 and 7 are actually a fairly recent invention. Most older buildings actually lean inwards creating a pyramid of sorts. They do that to help distribute the weight of the upper floors better. Some cities enforce this even on new buildings to adhere to this aesthetic and to let more light in and not create a corridor of buildings. Take for example the Empire State building is actually more like a pyramid. As they did not have the design and materials to build something like the WTC buildings until the mid 60s. Wanted to be an architect for a few years when I was younger. Even studied it for about 3-4 years. But my artistic flare sucks balls, found I made a better programmer  I was also hoping they would build the spire in Chicago (they ran out of loan money). That was going to be a mega cool building with a interesting twist design.
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I was also hoping they would build the spire in Chicago (they ran out of loan money). That was going to be a mega cool building with a interesting twist design.
