In Group E occupancies with an occupant load of 100 or more, the minimum corridor width must be _____ inches.

In Group E occupancies, which typically include educational facilities like schools, the building code mandates that corridors serving an occupant load of 100 or more must have a minimum width to ensure safe and efficient egress during an emergency. The requirement for a minimum corridor width of 72 inches is based on safety standards that account for the movement of large numbers of occupants through narrow spaces.

A width of 72 inches provides sufficient room for occupants to evacuate comfortably while also considering the potential need for maneuvering emergency equipment or aid, such as stretchers or wheelchairs. This dimension helps facilitate a quicker and safer evacuation process, aligning with the overall goal of maintaining safety in buildings with high occupant loads.

Other options suggest narrower widths, which may be insufficient for safe egress in high-traffic situations, thus compromising safety during critical moments when rapid evacuation is necessary.