On Sat, 3 Nov 2007 16:27:45 -0700, "Richard W."
wrote:


"GatherNoMoss" wrote in message
oups.com...
......Why couldn't a large jet passenger plane, full of fuel, that
crashes into the World Trade Center building not have enough heat
energy to soften it metal structure enough to cause it's collapse ?

I ask the 9/11 conspiracy theorists this question....those who think
it impossible that it could happen.


My understanding is that is what happened. The use of asbestos to wrap the
beams wasn't done on the twin towers. Due to the health risks. If it had
more people could have gotten out and possibly the buildings might still be
standing. This was talked about on the news, but not very much.

Richard W.


And what engineering school did you graduate from that taught you to
wrap steel beams in asbestus?


Bruce-in-Bangkok
(Note:displayed e-mail
address is a spam trap)

Bruce in Bangkok wrote:

And what engineering school did you graduate from that taught you to
wrap steel beams in asbestus?


As I remember it was used to protect them from the heat of fire.
http://www.mssm.edu/cpm/pdf/asbestos-faq.pdf

Only part of the beam structurs were protected due to changing regulations
on use.

Sorta like the insulating foam problem on the shuttle, something that worked
fine good wasn't PC anymore.

Wes

On Sun, 04 Nov 2007 15:34:45 -0500, Wes wrote:

Bruce in Bangkok wrote:

And what engineering school did you graduate from that taught you to
wrap steel beams in asbestus?


As I remember it was used to protect them from the heat of fire.
http://www.mssm.edu/cpm/pdf/asbestos-faq.pdf

Only part of the beam structurs were protected due to changing regulations
on use.

Sorta like the insulating foam problem on the shuttle, something that worked
fine good wasn't PC anymore.

Wes


Sprayed-fire resistant materials (SFRMs) were used to protect some
structural steel elements in the towers, including all floor trusses
and beams.[60] Gypsum wallboard in combination with SFRMs, or in some
cases gypsum wallboard alone, was used to protect core columns.[60]
Vermiculite plaster was used on the interior-side and SFRMs on the
other three sides of the perimeter columns for fire protection.[60]
The 1968 New York City building codes were more lenient in some
aspects of fire protection, such as allowing three exit stairwells in
the World Trade Center towers, instead of six as required under older
building codes.[61]


My point was that asbestus wasn't used.. like lead based paint it is
now pretty much forbidden.

Bruce-in-Bangkok
(Note:displayed e-mail
address is a spam trap)

On Sun, 04 Nov 2007 15:34:45 -0500, Wes wrote:

Bruce in Bangkok wrote:

And what engineering school did you graduate from that taught you to
wrap steel beams in asbestus?


As I remember it was used to protect them from the heat of fire.
http://www.mssm.edu/cpm/pdf/asbestos-faq.pdf

Only part of the beam structurs were protected due to changing regulations
on use.

Sorta like the insulating foam problem on the shuttle, something that worked
fine good wasn't PC anymore.

Wes

There was a move from asbestos to gypsum plaster or mineral fibre cement
slurry, sprayed on. It works well and doesn't give you cancer. None of them
work well when you knock them with a jet airliner at speed.
IIRC some of the WTC was asbestos, some was plaster/ mineral fibre.
Geoff

"Bruce in Bangkok" wrote in message
...
On Sun, 04 Nov 2007 15:34:45 -0500, Wes wrote:

Bruce in Bangkok wrote:

And what engineering school did you graduate from that taught you to
wrap steel beams in asbestus?


As I remember it was used to protect them from the heat of fire.
http://www.mssm.edu/cpm/pdf/asbestos-faq.pdf

Only part of the beam structurs were protected due to changing regulations
on use.

Sorta like the insulating foam problem on the shuttle, something that
worked
fine good wasn't PC anymore.

Wes


Sprayed-fire resistant materials (SFRMs) were used to protect some
structural steel elements in the towers, including all floor trusses
and beams.[60] Gypsum wallboard in combination with SFRMs, or in some
cases gypsum wallboard alone, was used to protect core columns.[60]
Vermiculite plaster was used on the interior-side and SFRMs on the
other three sides of the perimeter columns for fire protection.[60]
The 1968 New York City building codes were more lenient in some
aspects of fire protection, such as allowing three exit stairwells in
the World Trade Center towers, instead of six as required under older
building codes.[61]


My point was that asbestus wasn't used.. like lead based paint it is
now pretty much forbidden.


That was my point, they didn't use the stuff. According to the news the
older buildings did use it. All I did was quote what the news guy said.

Plonk

Richard W.