To exempt a multi-level dwelling unit from the application of Sentence 3.3.4.4.(2) relating to exits from each storey, on the basis that the travel to the exit doorway does not involve passing up or down more than one storey, or there is an outside balcony from the upper storey to act as a location for leaving the dwelling unit in an emergency.
This is to limit the probability of excessive travel distances to an exit in an emergency situation, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.