An exterior exit stairway in an unsprinklered building must have a clear width between handrails of at least how many inches?

• A. 44
• B. 48
• C. 60
• D. 72

Answer: (B)

The requirement for an exterior exit stairway in an unsprinklered building to have a clear width between handrails of at least 48 inches is derived from building codes that ensure safe evacuation routes. A width of 48 inches is necessary to accommodate individuals moving in both directions during an emergency. This specified width allows for sufficient space to prevent congestion and enhances the movement of people, thereby reducing the risk of injury or obstruction.

This choice meets the safety standards set out in the building codes, as wider staircases facilitate more efficient evacuation, especially when quick and unimpeded movement is essential. Ensuring that exit routes are adequately sized is critical for the safety of occupants in the event of a fire or other emergency conditions, giving them the best chance to exit the building promptly and safely.