Residential Sheltering: In-Residence and Stand-Alone Shelters: February 2007 Tornado Recovery Advisory [open pdf - 707KB]
"The purpose of this advisory is to alert homeowners, renters, apartment building owners, and manufactured home park owners about the concept of in-residence and stand-alone storm shelters. This Recovery Advisory Addresses: 1) Consider a shelter for your home 2) In-residence shelter construction and retrofitting options 3) Sheltering options for when you can't place a shelter within your home 4) Areas of last resort for those residents that don't have access to a shelter 5) Emergency planning".
FEMA DR 1679 RA3
United States. Federal Emergency Management Agency: http://www.fema.gov/