Stress fatigue and material degradation due to light is my guess
I have never been called out to inspect rebar or concrete, or heard of any one of the techs or inspectors going out on the footings and have never heard of bidding going out for the contract for any firm in the area to do so.
without special inspection of footings the contractors will cheat like crazy, especially in remote areas like that where concrete takes a long time to deliver it goes bad and they WILL add water just to get it out of the mixer truck and make it even worse until it has about the same strength as compacted soil
Under-engineered and poorly built, using the cheapest contractor.
At least some of these monuments to collective stupidity shall no longer be standing as lonely and ghostly sentinels some fifteen years in the future, when they shall have been totally abandoned, their blades broken and the generator units forever stilled.
Gloom, despair, and agony on me
Deep, dark depression, excessive misery
If it weren’t for bad luck, I’d have no luck at all
Gloom, despair, and agony on me,,,,
You want cheap, reliable and plentiful power? Go nuclear.
https://www.iaea.org/newscenter/news/what-are-small-modular-reactors-smrs
Of course, there is a contingent who does NOT want cheap, reliable and plentiful power, for reasons of their own. And they will use every means at their disposal to assure that such an infrastructure is never built. They are also behind the shoddily constructed “green energy” schemes, which do not work as advertised on the best of days.