The 2021 International Building Code (IBC) is a comprehensive building code that sets minimum regulations for building design and construction in the United States and other countries. The IBC is developed and maintained by the International Code Council (ICC) and is updated on a three-year cycle to reflect changes in technology and construction practices.

The 2021 IBC covers a wide range of building design and construction topics, including fire and life safety, structural design, means of egress, accessibility, energy efficiency, and many others. The code sets minimum standards for building design and construction, and it provides detailed requirements for building components, materials, and systems. The IBC is intended to be used in conjunction with other building codes and standards, and it provides a baseline for building safety and performance.

The 2021 IBC is widely recognized as a leading reference for building design and construction in the United States and internationally. It is widely adopted by local, state, and federal agencies, and it is used by architects, engineers, builders, and other professionals in the construction industry to ensure that buildings are designed and constructed to meet minimum safety and performance standards.

It is important to note that compliance with the 2021 IBC is not mandatory, but it is widely recognized as a best practice and is often required by regulatory agencies and insurance companies to demonstrate the safety and performance of buildings. The IBC is updated periodically to reflect changes in technology and construction practices, and to incorporate feedback from users and stakeholders.