What is used to determine the required width of exits based on the number of occupants?

The required width of exits is determined using the egress capacity factor, which specifies the amount of doorway width necessary for each occupant. This factor ensures that enough egress space is available to accommodate the safe evacuation of people during emergencies. The code stipulates specific measurements, typically defined in terms of inches of exit width per occupant, ensuring that the design meets safety standards set by building codes.

While occupancy load calculation is crucial for determining the total number of occupants in a space, it does not directly provide the exit width requirements. The building area calculation involves assessing the overall size of the structure, which impacts occupancy but does not dictate exit width. Additionally, the exit arrangement factor pertains more to how exits are organized within a space rather than the maximum width needed based on the number of occupants. Hence, utilizing the egress capacity factor is essential to ensure that the design adheres to safety regulations regarding emergency evacuations.