The 2008 ICC 500 Standard for the Design and Construction of Storm Shelters was developed jointly by the International Code Council (ICC) and the National Storm Shelter Association (NSSA). This standard provides minimum design and construction requirements for storm shelters intended to offer a safe haven from storms characterized by high winds such as tornadoes and hurricanes. These types of storms typically generate wind pressures and flying debris far beyond what most commercial buildings and residences are constructed to withstand.
The ICC 500 standard outlines requirements for the main structural system of storm shelters, as well as for their components and claddings, ensuring they can withstand exceptional loads and debris impacts. It also addresses essential occupant safety and health considerations such as egress, lighting, sanitation, ventilation, fire safety, and minimum floor space per occupant.
This standard was formulated through a consensus process accredited by ANSI, involving public meetings and input from various stakeholders including FEMA and the Red Cross. Its provisions aim to integrate seamlessly with the broader ICC family of codes and standards, emphasizing affordability, safety, and the non-restriction of innovative materials and construction methods.
The 2008 ICC 500 standard is designed for adoption by jurisdictions through reference within local law proceedings. It specifies that storm shelters can be standalone structures or safe rooms within buildings, designed specifically to protect against tornadoes, hurricanes, or both. This standard is crucial for guiding the construction of effective storm shelters that provide critical protection during severe weather events.
