PING! Minneapolis/St. Paul RFC Posters
Ms P wrote:
>
> "Dave Smith" > wrote in message
> ...
>
> > FWIW, I heard something on the news today that one section of the bridge
> > was displaced several meters to one side, which indicated that there was
> > some force twisting it.
> >
>
> If you look at the pictures you can see the twist on one end of the bridge.
> The steel went one way and the decking went the other way. The rest of it
> collapsed straight down.
I am not sure that I agree with that report's assessment that the lateral
displacement indicates there had been some twisting of the structure. Since
it is likely the that initial failure occurred in one spot and that things
would tall in that direction first. Immediately upon that initial failure
the rest of it went tumbling down. But what do I know. I wasn't there and I
am not a structural engineer.
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