I've been reading the responses and checking the costs and effort of reinforcing the freight containers. By the time I'm done doing all of that, it would cost nearly as much as a commercial trucked-in shelter.
So, exploring alternatives... There's a couple shelter companies that make the round corrugated pipe shelters. One even does the 10' diameter version. Yes, the floor board idea with water and food storage is great. Just wondering how thick the metal is on those pipes. Almost considering coating the pipe with either swimming pool shot-crete and rebar or box in the pipe with concrete block and filling the void with poured concrete. I don't have a lot of faith in a piece of corrugated pipe holding 8-10' of dirt above it. Yeah, "earth arching" aside, I don't want the thing to become a tomb. I also don't feel like spending $600k for one of those Discovery channel welded box dumpster bunkers. He makes a great product, but after buying that, I won't have enough to build the house over it.
Anybody messed with that 10' corrugated pipe? How thick is the steel?