South Florida building collapse

Local news just mentioned that they found a cat, Sphinx, alive. This cat is now reunited with the family.

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An update:

https://www.seattletimes.com/nation-world/nation/report-evidence-of-extensive-corrosion-in-collapsed-condo/

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Thanks for posting the article. Wow, sounds like really crappy concrete and poor reinforcing steel detailing. Iā€™ve detailed long-span prestressed concrete bridges and it is challenging - sometimes the design engineer shows way too much steel for the room available. The design drawings tend not to be drawn to scale, and itā€™s the detailerā€™s job to let the engineer know if stuff wonā€™t fit properly.

Usually concrete strength is tested during construction, but maybe that didnā€™t happen in this case. Ugh. Itā€™s very upsetting to me.

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Can you explain why too much steel is a problem?

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There is a range of reinforcement percentage for reinforced concrete that is ideal. You donā€™t want it under-reinforced or over-reinforced. Concrete is excellent in compression and steel is excellent in tension, and they have to work together. Also, if you have too much congestion with reinforcing bars, thereā€™s not enough room for the concrete to flow and you can get voids, which is not good.

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This is the content I come to CC for! Thanks for sharing your expertise!

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Thank you for explaining this.
.

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You must have gone to a really great engineering school. :wink:

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And had an excellent professor (my dad).

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Another Florida tower is in troubleā€¦

https://www.cnn.com/2022/04/05/us/south-florida-building-evacuated-unsafe/index.html

I hope that people step up to help any seniors in the building. Scary enough for anybody, but for seniors uncertain if their lifetime of memories could potentially be lost, I canā€™t imagine.

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Also figuring out where to relocate to and how to afford it, especially for folks with limited means. Moving is very hard for SRs.

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