Terrain Engineering Group provides Soil Tests (site classification) for residential dwellings, industrial, commercial and institutional buildings are required to assess the subsurface conditions and therefore enable design of appropriate foundations. These types of investigations in accordance with the Australian Standards:
- AS2870-1996: "Residential Slabs and Footings - Construction" and
- AS1726-1993: “Geotechnical site investigations”
Your site is classified based upon the expected movement of the foundation soils - generally related to the capacity of the soil to shrink and swell.
The following classifications may be typically given:
- CLASS 'A' - Little or no ground movement
- CLASS 'S' - Slightly reactive sites
- CLASS 'M' - Moderately reactive sites
- CLASS 'H' - Highly reactive sites
- CLASS 'E' - Extremely reactive sites
- CLASS 'P' - Problem site
The site classification is presented in a formal report which generally forms part of a building application.
The soil samples can be collected in a variety of ways, including by hand auger, drill rig or backhoe.

