building a bunker

Anyone know if theres a book/manual/how to on building your own bunker? I have carpentry skills as well as others but am a little dumb when it comes to concrete and rebar.Curious on the load concrete can take with the amount of earth(load) on top of it. Any help would be greatly appreciated.

Does anyone here have a survival bunker other then me? Some people think I'm crazy, but come hurricane season, if we get hit by one, it's not a problem, I'm prepared. I have a survival bunker. My house was built in 1904 and had an old earth cellar. This was a cellar with a concrete roof that...