Design and Construction Guidance for Community Safe Rooms, FEMA 361, Second Edition, August 2008   [open pdf - 37MB]

"Federal Emergency Management Agency (FEMA) publications presenting design and construction guidance for both residential and community safe rooms have been available since 1998. Since that time, thousands of safe rooms have been built using FEMA's Hazard Mitigation Assistance Program. A growing number of these safe rooms have already saved lives in actual events. There has not been a single reported failure of a safe room constructed to FEMA criteria. This Second Edition of FEMA 361 presents updated and refined design criteria for safe rooms when compared to the First Edition's 2000 criteria. The changes to the design criteria are the result of post-disaster investigations into the performance of safe rooms and shelters after tornadoes and hurricanes. Further, the changes also consider the new consensus standard from the International Code Council® (ICC®) and the National Storm Shelter Association (NSSA) released in August 2008, the ICC/NSSA Standard for the Design and Construction of Storm Shelters (ICC-500). The criteria presented in this publication address how to design and construct a safe room that provides near-absolute protection for groups of individuals sent to a building or structure expecting it to be capable of providing them life-safety protection from wind, windborne debris, and flooding."

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Federal Emergency Management Agency: http://www.fema.gov/
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