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> That's what those triangular reinforcement beams one sees in San Francisco really do. Interestingly enough that’s not quite right. They were added in respons
by jahewson 5y ago
> That's what those triangular reinforcement beams one sees in San Francisco really do.
Interestingly enough that’s not quite right. They were added in response to the Tacoma Narrows collapse which was not, as is popularly misstated, destroyed by harmonic resonance but by aerostatic flutter.
Certainly resonance due to cars or pedestrians can damage a bridge, but that’s a separate issue.
- Animats 5y agoRight. But you have to have a structure capable of long-period oscillation to be vulnerable to that particular problem. That's an inherent problem for long span bridges, but a building has to have a big unsupported span to be vulnerable to that problem. Sports stadium scale, though... All that potential lift.