![]() It’s possible to make these buildings more resistant to earthquakes through seismic retrofitting. Unless your community has adopted the latest model building code, including its seismic provisions, new structures in your community will probably not provide the current minimum level of protection from earthquake hazards to you and others who use them. Other jurisdictions have been slow to adopt the latest code editions. Some states and local jurisdictions have adopted the codes but have made amendments or exclusions relating to the seismic provisions. ![]() FEMA’s companion document Earthquake Resistant Design Concepts (FEMA P-749) provides a nontechnical background explanation.Īdoption of the model codes is uneven across and within states, even in areas with high levels of seismic hazard. A primary resource is the 2020 NEHRP Provisions Edition Volume I and Volume II. These seismic provisions represent the best available guidance on how structures should be designed and constructed to limit seismic risk.Ĭhanges or additions to the seismic provisions come from many different sources, including new research results and documentation of performance in past earthquakes. ![]() Some provisions within the IBC, IRC and IEBC are intended to ensure that structures can adequately resist seismic forces during earthquakes. In 2000, the three regionally-based model code organizations (BOCA National Code, SBCCI Standard Code and ICBO Uniform Code) combined together to form the ICC. The ICC publishes new editions of the International Codes every three years and many states and localities have adopted them since the first editions were issued in 2000. International Existing Building Code (IEBC): Applies to the alteration, repair, addition or change in occupancy of existing structures.International Residential Code (IRC): Applies to new one- and two-family dwellings and townhouses of not more than three stories in height.International Building Code (IBC): Applies to almost all types of new buildings. ![]() The ICC’s family of International Codes includes: Rather than create and maintain their own codes, most states and local jurisdictions adopt the model building codes maintained by the International Code Council (ICC). They specify the minimum requirements to adequately safeguard the health, safety and welfare of building occupants. Building codes are sets of regulations governing the design, construction, alteration and maintenance of structures. ![]()
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