All true, But I still have a hunch that the builder might have cut a few corners...like the contractors who built the Ted Williams Tunnel in Boston.
Sure but as mentioned above in post 47, there are endless ways things can go wrong... and as mentioned in 54, the forensic analysis should figure it out. I actually am thinking that as these things go, this should be a fairly easy failure analysis....well, we will see soon enough.
https://www.youtube.com/watch?v=rnprZxQQWQE
For those interested, the engineer who designed the 40-year reinspection program was interviewed the other day on Fox and Friends about the failure….his name is John Pistorino.