Which regulation requires doors in buildings to swing in the direction of exit travel when the occupancy load exceeds 50 occupants?

The regulation that necessitates doors in buildings to swing in the direction of exit travel when the occupancy load exceeds 50 occupants is established by the International Building Code (IBC). This requirement is critical for ensuring safe and efficient egress during emergencies, as it allows occupants to exit the building quickly and minimizes the potential for bottlenecks at points of egress.

The IBC's guidelines are designed to enhance public safety by providing clear standards for building design and occupancy. By mandating that doors swing in the direction of exit travel under these conditions, the IBC helps facilitate a smoother flow of people exiting a building, which can be essential in emergency situations where every second counts.

Other options, such as OSHA, NFPA, and BCA, address different aspects of safety and building regulations, but it is the IBC that specifically outlines the requirement for door swing direction based on occupancy load criteria. This highlights the IBC's role as a foundational building safety guideline within the context of egress and occupant safety.