So I've been doing testing, and I have come to the conclusion that the base is destructable BUT it will keep you and your friends alive. I have put the nukes right next to the base walls and I have survived a nuclear blast. Although it will keep you safe, it, sadly, will be destroyed in the process. But you can respawn it and clean it up like nothing ever happened.

Side note: you can probably also float on water with it because of the barrels. If not then you can edit it to your liking, just credit me pls. <3