maldon007 wrote:Building a bunker may or may not be cheaper than reinforcing containers... You will need more concrete to equal the same strength as metal + crete... You will need more forms/braces... You will need doors... Bolting things to the walls will be tricky-er... Squaring everythig up may be tougher, without the "frame" of the trailer... And you already have them.
Maybe sell some, as 10 seems like a LOT... use the money to fix up a few, even better... But sure, selling them all & building a bunker is an option. But it depends on your experience whether you can build a free standing bunker on your own... At my skill level, I might attempt the reinforced container build... But not the other, just a bit over my head.
Think about the amount of ten containers they are 8 foot wide so you need a hole 80 by 40 or something like this.
To make this all stable, you need a lot of concrete. You probably need to get ground anchors at least 40 feet deep. You need everything leveled and you need some concrete on top so that you actually can drive over it.
If you want to place two containers deep it still would be 40 by 40 feet.
To get them in you need special equipment, and you still need ground anchors.
Besides now you need a hole that is at least 16 feet deep.
You need to get sumps that collect the rain water, and pumps that pump it out. You might need to get concrete walls so that the side walls don't give in.
ten containers underground is just a logistic nightmare, and is not cost efficient at all.
By the way, how many people do you want to have there? 200?
If I bring this on the point, you actually need construction plans for this, and probably need permission by the county you are in to build such an underground construction, and you might need to get permission by your water district as well as this is such a large installation.