Substructure and ground-bearing floors

Also see:

5.1.18Laying the ground-bearing floor slab

Ground-bearing floors shall be reasonably level and effectively impervious to moisture.

All underfloor services and ducts should be installed and tested before concreting, where appropriate.

Care should be taken to ensure that all joints and junctions between DPMs, wall DPCs or tanking in substructure walls are undamaged, especially while the concrete for the ground slab is being poured.