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Mississippi Bridge collapse


Torneyboy

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I have seen vibration crack motor mounts, engine exhaust stacks, machinery foundations...I would take the "myth busters" with a large grain of salt.

 

Civil engineers go to great lengths to isolate any equipment that is causing vibrations in buildings.

My cousin has made big $$$ doing vibration analysis consultations and studies.

 

All the ships I have worked on had a certain speed range barred (not allowed) because of vibration characteristics of the propellers/shaft/engines/hull design, etc.

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Guest lazyphil

i think it deserves reporting, it was a terrible tragerdy and looked very dramatic. a few folk died yes, and a big deal to those who lost them.

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Then you should just ignore this thread. :twocents:

 

[color:green]I have seen vibration crack motor mounts, engine exhaust stacks, machinery foundations...I would take the "myth busters" with a large grain of salt.[/color]

 

Cracking due to metal fatigue is DIFFERENT to failure due to resonance. The bridge did not collapse from resonance since there was no build up swaying or wave amplitude.

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Guest lazyphil

dafur, for example, needs to make more headlines no doubt at all on that, but this still warrants the coverage. i know its strange. a ski lift disaster in austria can make bigger headlines than a earthquake in remote china wiping out 10k people on the same day.

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