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Strip footings

This slab is supported by strip footings. Strip footings are also called 'edge beams'. A footing slab requires two separate concrete pours. It can only be used on Class A and Class S sites.

Advantages of footing slabs are that they:

  • adapt to sloping sites
  • require simple formwork (no edge rebates)
  • require simple excavation that is exposed for minimal time
  • do not require internal beams.

Diagram of a footing slab. There is slab thickening under the load bearing walls and also reinforcement. There is a tied edge beam on one side and a strip footing on the other side. The strip footing has reinforcement in the top and bottom.

The fill material is usually restrained at the external walls. Therefore these walls need to be strong enough to support the fill.

Diagram of a footing slab. There is controlled fill underneath the slab to a depth a little above the strip footing. There is an additional layer of masonry at the edge to support the fill. wDiagram of a section of frame sitting on the slab which is supported by controlled fill. The external wall has a double masonry layer beneath the slab.