Edge rebates - Purpose
Where external walls are to be masonry veneer or full masonry, edge rebates must be provided in the edge-stiffening beam. A check out from the edge beam will create a ledge for the brick to rest on lower than the top of the slab. This is an added precaution to prevent surface run-off water from entering the building.
The rebate must be flashed and weep holes provided in the masonry. The weep holes must be spaced at a minimum distance of 1.2 metres to allow water to drain out and away from the wall and the slab.