Ground Floor


The ground floor of a building is the supporting structure for the floor and walls at the first usable level of the building. For most houses this will be at the same level as the site surrounding the house, these are referred to as ‘slab on ground’.  Some houses, such as ‘Queenslanders’, may be raised above the level of the surrounding site, these are referred to as ‘suspended’ ground floors. Suspended ground floors can be further broken down in the following categories:

  • Concrete Precast Floor Panels
  • Aerated Concrete Precast Floor Panels
  • Permanent Formwork, in-situ Steel Slab
  • Timber Joists/Floorboards*

The ground floor is vulnerable to the affects of flooding because it is one of the lowest parts of the house. The ground floor is usually protected from storm impacts unless the roof and ceiling is severely damaged and water can get in to the house.

*this category can be further broken down in to the type of timber joists and the type of boards used

Subcategories inside Ground Floor

The following products are related to Ground Floor. Below each as a list of hazards that this product has been tested against. Click on the hazard for more information about how this product relates to this hazard.

Slab on Ground

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What is the difference between this rating and supplier ratings?

The rating you see at the top of the page is the resilience rating of the generic class of building material to a particular hazard. A supplier rating is particular to a specific supplier product. For example, clay bricks may have a resilience rating of '3' to inundation but a supplier may have made specific improvements to their bricks and may be able to achieve a resilience rating of '5' for their clay brick. "