It's causes and effects on buildings foundation movement and reactive soils
that swell on becoming wet and shrink on drying are called reactive soils.
These type of soils cause movement to your house and proper management
should be taken to minimize this affect.
Leaking gutters/plumbing trees too close to the building etc.
- S: Clays that have not given in the past
- M: Moderately reactive clays that may cause minor damage
- H: Highly reactive clays that often damage houses, paths and fences
- E: Extremely reactive clays that frequently damage houses even with strong footings
Depending on which part of Melbourne you are living in and the soil
classification in your area.
Also see House Relevelling
Also see House Restumping
Also see Subfloor Rebuilding