back in the 1960s, USDA drew up several sets of plans for ag facilities, and homes, that contain fallout shelters. LSUAgCenter has a few of them still posted...

Three Bedroom House with Emergency Shelter http://www.lsuagcenter.com/en/our_offices/departments/Biolog...

Bunker-type Fallout Shelter (for beef cattle) http://www.lsuagcenter.com/en/our_offices/departments/Biolog...

Stall Barn & Fallout Shelter http://www.lsuagcenter.com/en/our_offices/departments/Biolog...

Fallout Shelter, Dairy Barn & Family Center http://www.lsuagcenter.com/en/our_offices/departments/Biolog...