In article ,
Roderick Stewart  scribeth
thus
>In article <c754863e-74a2-4386-a7ee-
>1489a40c1d09@k30g2000hse.googlegroups.com>, Jamie_p84@excite.com wrote:
>> Actually the twin towers were massively overdesigned, to withstand
>> more than twice the weight which they actually carried.
>> 
>> > Quite obviously the buildings involved were very heavily loaded
>> 
>> Well within design tolerance.
>
>They were only designed for the worst thing that could be expected to 
>happen to them, which at the time didn't include suicidal nutters 
>flying fully fuelled commercial airliners directly into them. 

And where did I read that they were designed in mind with a 707
walloping them..

Which was perhaps the biggest airliner around at the time?..

>Until the 
>day it happened it was literally unthinkable that anybody would 
>actually do that.
>
>What happened next has been well researched. The impact weakened the 
>structure, the intense heat warped and dislodged some of the beams, 
>which weakened it some more, and some time later gravity did the rest. 
>Gravity acts downwards, not sideways.
>
>Rod.

-- 
Tony Sayer

In article <tLgIM$H9tkxIFw22@bancom.co.uk>, Tony sayer wrote:
> >They were only designed for the worst thing that could be expected to 
> >happen to them, which at the time didn't include suicidal nutters 
> >flying fully fuelled commercial airliners directly into them. 
> 
> And where did I read that they were designed in mind with a 707
> walloping them..

I don't know where you read it. You tell me.

Whatever type of aircraft they designed it to withstand, at that time the 
only plausible scenario they would have taken into account would be one 
in which the collision was accidental, so most likely an aircraft going 
off course at the end of a long flight and therefore with its fuel tanks 
nearly empty. Aircraft don't generally lose their way just after take-
off, and until it happened for real, it never would have crossed 
anybody's mind that anybody would deliberately fly one of these things to 
their own death straight into a building, so I don't suppose the 
additional effect of a full load of aviation fuel would have been taken 
into account.

Rod.
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