Substructure and ground-bearing floors

Also see:

5.1.8Infill up to 600mm deep

Infill beneath ground-bearing floors shall be a maximum of 600mm deep.

Ground-bearing slabs are not acceptable where infill exceeds 600mm in depth.

Where the design requires in excess of 600mm of infill at any point within a self-contained area, the floor construction over the whole of that area is required to be independent of the fill and capable of supporting:

  • self-weight
  • non load-bearing partitions
  • other imposed loads.