re: #121 Teukka

Also, on the Florida Condo Collapse, check out the 2018 report, it says that beams and columns were spalling and rebar was visible. And a next-of-kin to two of those confirmed killed in the collapse had seen the rebar sticking out long before the collapse.
And the Condo Association had spent 3 years trying to wriggle out of the at least $10 mn repair bill, which, listen to this, according to the 2018 report, should be done in a timely fashion.
Next, google Sampoong Department Store Collapse “spalling”. Next google similar collapses with the keyword “spalling” (quotes around spalling to force search to include the word). Then you realize how serious a warning spalling of concrete in load bearing beams, slabs and columns is…
I sniff a criminal case regarding criminal neglicence and related homicide. Well, if you’d have a criminal system that worked in the state, that is.

Two videos on why concrete needs rebar and some stress tests which shows the failure mode:

What is Concrete?

Why Concrete Needs Reinforcement