What is the minimum occupant load for the need to divide stories in Group I-2 occupancies with smoke barriers?

In Group I-2 occupancies, which typically include medical facilities such as hospitals or nursing homes, there are specific requirements regarding smoke barriers to enhance safety and minimize the risk of smoke spreading during a fire. The building codes stipulate that if the occupant load exceeds a certain threshold, smoke barriers must be implemented to help protect those within the building.

The correct requirement specifies that a minimum occupant load of 50 persons triggers the necessity to divide stories with smoke barriers. This threshold is set to ensure that adequate safety measures are in place for higher density areas, reflecting the increased risk associated with more occupants. Smoke barriers help compartmentalize the building, providing critical time for evacuation and reducing smoke inhalation risks.

Occupant loads under this threshold, such as 10, 20, or even 100 persons, do not necessitate smoke barriers, as the risk level and response strategies differ based on the number of individuals present. Thus, in Group I-2 locations, the 50-person minimum is vital for enforcing fire safety measures that are essential for protecting vulnerable populations.