Published by the International Code Council (ICC), ICC/NSSA Standard for the Design and Construction of Storm Shelters (ICC 500), is a referenced standard in the International Codes (ICodes). The ICC, in partnership with the National Storm Shelter Association (NSSA), formed a national committee in 2003 that developed and released a consensus standard to codify the design and construction requirements of tornado and hurricane storm shelters. The ICC 500 was first published in the summer of 2008 and updated in 2014. ICC 500 provides the minimum requirements to safeguard public health, safety, and general welfare relative to the design, construction, and installation of storm shelters constructed for protection from high winds associated with tornadoes and hurricanes. This standard is intended for adoption by government agencies and organizations for use in conjunction with model codes to achieve uniformity in the technical design and construction of storm shelters.
