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CSI Soil Testing

Warana, QLD 4575


CSI (Construction Site Investigation) Soil Testing

What We Do
We carry out Soil Tests and Site Classifications for residential, Institutions, Commercial and Industrial building projects. These may be entire sub-divisions, one-off buildings, extensions or pre-purchase.

Family Business
Owner operated and backed by more than thirty years experience. Based on the Sunshine Coast since 1992.

Customer Service
At CSI Soil Testing we make it our business to not only offer the most in depth service we can in finding a suitable material for you to build on, but also to offer the best customer service so you walk away from the process satisfied.

About Us
What are you building on?

That’s our mission. It is important to know what the footings of your home are founded on. As we all know, if your foundations are sound, the rest of your life (or home) is sound as well. It takes a bit of effort and time to investigate your foundation material, but it is worth the effort, if done well.

CSI Soil Testing is owned and managed by Brian Croke, Associate Diploma in Civil Engineering. Brian is ably assisted by Carolyn Foot in the office as our Office Manager. Carolyn has many quality years of experience and is always learning new skills and improving.

Brian Croke
Brian completed his schooling on the Sunshine Coast and completed an Associate Diploma in Civil Engineering at QIT, Brisbane in 1984 and has been in the soil testing industry ever since. He started this particular soil testing business in 1992 on the Sunshine Coast.
Brian has completed the Waste Water Design course at TAFE, has the relevant QBCC licences for waste water design and site classifications.

Why Soil test?
A soil test before building any construction is a vital step to find out what you are building on. The soil profile will affect the foundations of the building.

Soils can vary from sandy, silty, clay or to rock or a combination of all these. Many building estates have been filled to either raise them above overland water flows or to level them out for easier building purposes.

Soils can range from soft (low bearing capacity) to hard (high bearing capacity). Clays can be reactive to moisture change i.e.. swell when dry becoming wet or shrink when wet becoming dry. Silts can turn weak quickly when moisture content increases. Rock boulders can move independently in the soil profile.

The information gathered in a soil test investigation can greatly impact on the integrity of the proposed building and if done with care can provide the engineer with the tools to design a proper long lasting foundation. It is vital to get the foundations right so the building will stand the test of time.

Saving a few dollars to build a lesser foundation initially may cost many times over to repair a damaged building a few years later.

CSI Soil Testing is about doing a good sound job for a very reasonable price. We will actually take time to drill your site and find out the soil types and a solid bearing layer so the engineer can feel confident in the foundation design process. We are not one of the supercheap high turnover operators who treat your site as another quick job.


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Machines & Services

Services (1)


  • 2/3 Bearing Avenue, Warana QLD, Australia
  • Bruce Hwy, Forest Glen QLD 4556, Australia

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