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More WTC News
Current WTC happenings: The FBI is searching ISPs with FISA warrants. Architects and civil engineers are starting to speculate on why the towers collapsed. Pictures: NASA, a powerful photoessay, newspaper headlines. Current investigation news: LA Times, NY Times, CNN. They're finally starting to mention casualty figures. Finally, bjb writes: "It isn't the hollywood blockbuster of a story, but I'm a daily reader of Slashdot, and I was on the 38th floor of the WTC 1 building when the first plane hit. Oh, and I was reading Slashdot at the time. You can read about my experience here. It was originally an email that I sent out to friends and family, but I was asked by NPR's Talk of the Nation to make it a web page."
As everyone knows by know, Morgan Stanley Dean Whitter occupied roughly 10% of the WTC, with some 3500 employees. There's a good article on Yahoo this morning about their offsite back strategy, and how it enabled them to start working again almost immediately.
My boyfriend is a professional structural engineer who has done a lot of work on major LA buildings. He's currently attending Berkeley for a masters in Structural Engineering and, in chatting with his professors, came to this (paraphrased):
1) Yes, the buildings did withstand the impact of the airplanes. They didn't fall immediately, did they?
2) Buildings are built to a certain fire code, in that the building won't completely catch on fire and collapse for a certain length of time (usu 1hr?). The escape routes are located generally in the four corners. Since the plane took out one of them, this means that the required escape time is now 2+ hours.
3) Jet fuel burns with a much higher temperature than normal fuel.
4) Steel expands and crystalizes under extreme heat. Since the plane(s) hit at a "centre"-ish spot, the steel tried to expand up and down, but since the steel in the "up" and "down" weren't hot and wouldn't move, the steel in the "centre" buckled.
5) Since jetfuel burns hotter, step 4 happened faster and also reduced the "buckle" time by a certain amount - when used along with the increased escape time required, means that considerably fewer people would be able to escape.
6) Since the steel buckled, the upper floors now come crashing down on to the floor immediately below. Being as that floor is not suited to hold X number of upper floors MOVING rapidly at it, it collapsed and repeat until bottom.
Therefore, it was the fire that made the buildings collapse, not the impact of the planes.
-mrsmalkav
Interesting reading:
- Terror in the Mind of God: the Global Rise of Religious Violence
- Political Islam
Meanwhile, in Australia they are already stoning school buses with Islamic kids on them... (I have a rant about this on my home page.)Danny
[I have written 600 book reviews]
I have written over 900 book reviews
> Notably in the fact that Islam was spread initially by military conquest. Christianity was spread by word of mouth and people willing to die for it- but not fight for it with violence.
They probably didn't teach you in Sunday School that most of continental Europe (outside the borders of the Roman Empire) was "Christianized" at swordpoint.
To say nothing of the spread of Christianity beyond Europe during the Colonial Era. (Indeed, there was a doctrine [called repartimenta, IIRC], that essentially justified enslavement of the natives as a way for them to "repay" the Europeans for having troubled themselves to sail across the seas to save their souls.
Don't confuse ideology with history.
Sheesh, evil *and* a jerk. -- Jade