Which occupancy classification corresponds to institutional structures?

The classification that corresponds to institutional structures is Group I. This classification encompasses buildings that are used for care and detention, where individuals who may be unable to evacuate themselves in case of an emergency are housed. These can include facilities like hospitals, nursing homes, and correctional facilities.

Group I is distinct because it sets specific requirements for safety, including stricter building codes, fire protection measures, and accessibility standards to ensure the safety of vulnerable populations. This classification addresses the unique needs for emergency readiness and occupant safety in institutional settings, making it essential for building and fire codes to recognize and regulate these risks effectively.

In contrast, the other classifications relate to different types of occupancies. Group R pertains to residential buildings, Group S refers to storage facilities, and Group U includes utility structures. Each of these has different safety and construction requirements that are not as stringent as those required for institutional structures like those classified under Group I.