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5.25.1.8 Infill 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.
Generally this should be achieved with the use of a suspended slab. See Chapter 5.2.
Last updated: 2nd January 2024