The swinging door requirement in means of egress states that a swinging door must be provided within ______ feet of revolving doors.

• A. 5 feet
• B. 10 feet
• C. 15 feet
• D. 20 feet

Answer: (B)

In means of egress design, revolving doors can impede rapid, unobstructed exit, so a swinging door is required nearby to provide a dependable alternate exit if the revolving door can’t be used. The specified distance is 10 feet, which ensures occupants have quick access to a standard door without forcing them to travel far past the revolving door or crowd the doorway. This distance balances being close enough for rapid egress with giving enough space for the swinging door to operate safely.

Shorter distances, like 5 feet, could create clearance issues and hinder the swing of the door or the revolving door’s operation. Much longer distances, such as 15 or 20 feet, would weaken the guaranteed alternative path and slow evacuation in emergencies.