Where Table 5.3/1, C/AS2 permits a maximum largest single unprotected opening of 6m2 on the external wall of an apartment firecell, in lieu of one 6m2 opening, is it permitted to have two 3m2 unprotected openings instead, less than 1.5m apart ?
The remainder of the wall (including the area between the unprotected openings) is fire rated and the combined area of the unprotected openings is within the maximum percentage of wall area permitted to be unprotected (Table 5.2a) .