Why does Soil Type Matter?
The type of soil you are about to build a home on will determine the slab type needed. The earth under your home is the foundation for your building, it could have an impact for your home over its lifetime. It is important to have the soil engineered and certified by professionals.
In basic terms, the engineer with determine your soil’s reaction (movement) to both wet and dry conditions. Your home’s slab type will then be designed, based on these results.
Two to three bore holes are drilled (usually 2m down) and soil samples are removed and taken to the laboratory for testing. This process will take seven to ten days.
This is the most extreme soil type and simply means this soil has a higher level of movement. Although E class slabs are the most expensive, the good news is your home will be sitting on a very strong slab and foundation! Interestingly, E-type soil is usually much better for growing lush gardens and turf – saving you money when it comes to landscaping your home.
The Structural Engineer plays an important role by making the final decision on what type and size of slab will be used based on the results of your soil test. Generally the more extreme the soil type, the thicker and stronger the slab and foundations must be.