To specify the fire-resistance level (FRL) and other necessities of constructing parts in Type B construction. Any development joints, areas and the like between the top of the wall and the ground, ceiling or roof is smoke sealed with intumescent putty or different suitable material. A part of a constructing, and if occupying only a part of a storey, is separated from the remaining half by a fire wall. In a Class 5, 6, 7, 8 or 9 building, within the storey instantly below the roof, inner columns...