Without the use of a geotechnical report, engineers or designers will have to make assumptions for the design criteria of the onsite soils. Often these assumptions are very conservative and may increase construction costs significantly. By deciding not to obtain a geotechnical report, clients are ultimately assuming responsibility for any adverse soil conditions that may be encountered. They also assume the risk for any resulting defects in the structure that are related to such soil conditions.

 

Geotechnical issues such as reactive soils, unstable sloping grounds, a high water table etc. may be encountered. These could significantly increase the project costs if they are discovered during construction. Typically, the client bears all additional engineering or construction costs incurred as a result

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Geotechnical investigation report obtained prior to structural design stage may save clients money and time. The structural design carried for the existing ground conditions will also benefit the project in the long run for durability and cost.

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Geotechnical reports may also be required by the local governing department (council) or other government agencies such as RMS for projects adjacent to or nearby to their property. The client should ensure that it is provided prior to beginning the engineering process.