Final answer:
The student's question is concerning building safety standards, which usually mandate a certain number of exits based on the occupant load of a story or roof. Typically, four exits are required for high occupant loads, and this requirement is a part of building codes to ensure safe emergency evacuations.
Step-by-step explanation:
The question pertains to the safety standards for building design, specifically concerning the required number of exits for a floor or roof with a high occupant load. In building codes, there are specific requirements based on the occupant load, which is the number of people estimated to occupy a space at one time. While the exact number required can vary based on the code being referenced (such as the International Building Code or regional variations), as a general guideline, four exits are typically required for an occupant load that exceeds a certain threshold. This threshold can depend on factors such as the use of the space, the layout, and fire safety considerations. The building codes are designed to ensure safe and timely evacuation in the event of an emergency.