What is the required width of stairways for an occupant load of 40?

For an occupant load of 40, the required width of stairways, as specified in various building codes, including the International Building Code (IBC), is typically a minimum of 36 inches. This width is established to ensure safe egress during emergencies, allowing occupants to exit rapidly and efficiently.

The minimum width can vary based on the occupant load, the use of the building, and other factors such as whether the stairway serves as the primary means of egress. For a load of 40 occupants, the code explicitly states that the width must accommodate these individuals without compromising safety. A width of 36 inches provides sufficient space for multiple people to traverse the stairway side-by-side, which is crucial in emergency situations where rapid evacuation is necessary.

Wider options may be applicable in certain circumstances based on local amendments or unique building configurations, but for a standard calculation with an occupant load of 40, 36 inches is the correct and required width.