Finished concrete slab floor level
The height of the finished concrete slab floor level must be specified or calculated before construction. This is to ensure that the finished floor level finishes above the surrounding ground level. Raising the slab level above the ground level ensures floodwater or stormwater cannot readily flow into the house and cause water damage.
The minimum recommended distance from the top of the slab to the finished ground level (FGL) is 150 mm.
