To limit the probability that exit door leaf openings will be of insufficient size to permit efficient evacuation or movement to a safe place in an emergency situation, which could lead to congestion at the door openings, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
To limit the probability that exit door leaf openings will be of insufficient size, which could lead to emergency responders being delayed in gaining access to floor areas in an emergency situation, which could lead to delays or ineffectiveness in emergency response operations, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.