That sounds like a clear OSHA violation.
Whose administration approved this monstrosity?
Approved all the way back in 2012, you say? Construction didn't start until 2019, and boring started later?
bkmk
Probably not a good idea to have DEI designing and operating large tunnels.
In our younger years, something similar happened to my BFFs husband while he was working underground for the city.
That was one helluva long day for all involved. He was OK, but he was never the same. :(
You could not get me to to more than ditch deep in that area as unstable as it is with so many faults. Fault gouge is ground rubble looking for a place to fall.
When they dug similar tunnels in Houston and under the ship channel all I could imagine was mud, maybe shale.
Had a classmate that specialized in soft sediment tunneling.
That sounds like a clear OSHA violation.
Whose administration approved this monstrosity?
Approved all the way back in 2012, you say? Construction didn't start until 2019, and boring started later?
You can be sure in Los Angeles the contract went to a DEI firm, possibly “all women.”
Reminds me of the DEI “all women contractors” bridge in Florida that collapsed in 2018 killing six people:
“The National Transportation Safety Board (NTSB) identified an engineering design error as a direct cause of the collapse. Specifically, there was a miscalculation of the available interface shear capacity, leading to an under-reinforced connection. This resulted in insufficient steel rebar being embedded in the concrete between the base of member 11 and the deck.”
What happens when incompetents are put in charge of projects.
Thank God no one was killed in the collapsed tunnel.
Rescued by Big Bad John?