Highlights of ICC 500-2023, ICC/NSSA Standard for the Design and Construction of Storm Shelters

This document summarizes the key provisions and significant changes in the ICC 500-2023 Standard for the Design and Construction of Storm Shelters. It addresses requirements for siting, structural design, occupant density, accessibility, egress, signage, fire safety, essential features, and testing methods for storm shelters intended to protect against tornadoes and hurricanes. The overview covers both community and residential storm shelters, including their application in critical facilities and schools, and highlights the integration of ICC 500 with IBC and IRC codes.