To exempt the separations of seating areas of Group A, Division 1 occupancies from the application of Sentence 3.3.2.2.(1) by permitting a reduction in the fire-resistance rating from 1 h to 45 min on the basis that the floor assemblies in the building need not have a fire-resistance rating of more than 45 min and, if they failed, it would negate the remaining rating of the fire separation between the seating areas and the remainder of the floor area.
This is to supersede the requirements of Sentence 3.3.2.2.(1) and permit a lower minimum fire-resistance rating on the basis that the rating of the separation need not be any more than the other assemblies that enclose the seating area.