For better info, you can go to the Federal Emergency Management Association (FEMA) web site and search for what you want. You can search for storm shelter AND build (use upper and lower case as I typed it), and tell the 'search engine' you want more than 10 responses per page, then click 'Search'. You can enter fallout shelter AND build (in the same format) and Search. And so on. You can add more phrases or words, just separate them with the word AND.
Do be mindful that some of the plans need to be written away for. Others can be downloaded. (Just read what you're presented.) If you need more help, post up.
My best to ya and hope this helps.
PS: My previous post only provided drawings; NOT real good plans.