Re: Physics of the 9/11 building collapses?


RadicalLibertarian@xxxxxxxxxxx wrote:
This whole argument is idiotic.

Take a piece of steel and heat it up. It gets very soft LONG before it
gets red.

Ever tried blacksmithing, out of curiousity? It is worth the experience
if you haven't.

If you are going to argue the the WTC should have been able to
withstand the flames and heat from 5,000 gallons of flaming jet fuel, I
think that physics can very easily prove you wrong.

I don't think that is the point he's trying to make. I think his
problem is largely an energy concern: when one floor hits the next,
kinetic energy will be lost in demolishing the lower floor, which will
slow the rate of collapse of the structure. If the rate of collapse is
very close to, for instance, the same rate of fall as a piece of debris
leaving the building, that would imply that very little energy is being
lost in the collapse process.

Steel frame building are notorious for collapsing when there is a fire.
Ask a fireman. I-beams aint so tough at 800 or 1,000 Farenheit.

Since you asked, there have only been 6 incidents of a large reinforced
steel building collapsing due to fire from 1970-2003. Four of them
occured on September 11 (WTC 1, 2, 5, 7).
http://www.haifire.com/presentations/Historical_Collapse_Survey.pdf

There is no way that those buildings could tolerate that much burniong
jet fuel. I knew that they were coming down as soon as I saw it live on
Squakbox, and it's an insult to turn it into some damn UFO story.

Which begs the question: what about WTC 5 and 7?

A.

.

Relevant Pages

  • Re: Physics of the 9/11 building collapses?
    ... Take a piece of steel and heat it up. ... Steel gets very soft long before it gets red. ... kinetic energy will be lost in demolishing the lower floor, ... slow the rate of collapse of the structure. ...
    (sci.physics)
  • Re: Physics of the 9/11 building collapses?
    ... Take a piece of steel and heat it up. ... Steel gets very soft long before it gets red. ... kinetic energy will be lost in demolishing the lower floor, ... slow the rate of collapse of the structure. ...
    (sci.physics)
  • Re: Physics of the 9/11 building collapses?
    ... That heat would have to have been communicated to primary support members. ... kinetic energy will be lost in demolishing the lower floor, ... slow the rate of collapse of the structure. ... The numbers I have right now for the period of collapse of 1 WTC ...
    (sci.physics)
  • Re: Monday 7pm Natl Geo Channel --> 9/11: Science and Conspiracy
    ... dismantled the steel framework of the floors below the impact (heat ... rises, that's a scientific fact); or, 2) how "burning embers" could ... Heat rises and radiates, I ... If one views the available footage of the collapse there's one point ...
    (alt.gathering.rainbow)
  • Re: Physics of the 9/11 building collapses?
    ... That heat would have to have been communicated to primary support members. ... kinetic energy will be lost in demolishing the lower floor, ... slow the rate of collapse of the structure. ... The numbers I have right now for the period of collapse of 1 WTC ...
    (sci.physics)