Foundation and Anchoring Criteria for Safe Rooms

This FEMA fact sheet provides detailed foundation and anchoring criteria for prefabricated safe rooms designed to protect occupants during tornadoes. It outlines requirements for design, installation, and inspection in accordance with FEMA P-361 and ICC 500, including wind, flood, hydrostatic, and buoyancy loads. The document addresses both new and existing slab-on-ground foundations, post-installed anchors, and special inspection protocols. Guidance is intended for design professionals, installers, and building officials involved in safe room projects.