To ensure representative soil testing results, there are several key factors geotechnical engineers must consider when collecting samples.
1. Importance of Sampling Locations in Geotechnical Testing
Selecting sampling locations requires an understanding of the entire project area’s potential geotechnical variability. Initial geophysical and surface investigations can help identify key zones of interest, informing a targeted geotechnical sampling strategy. This ensures that the samples taken are representative of the area’s overall geological characteristics.
2. Ensuring Adequate Sample Quantity for Soil Testing
Adequate sample quantity is essential to capture the variability of soil properties. The number of samples required depends on the project size and complexity. Following Australian Standards, as well as other regulatory body guidelines, helps determine the appropriate sample quantities and distribution across the site.
3. Correct Equipment and Techniques
The choice of sampling equipment and techniques can influence the accuracy of data that can be collected from the samples. Various methods are available, including hand tools, mechanical excavators and augers, and geotechnical drilling equipment as well as in-situ testing options. The selection depends on factors such as site access, expected soil type, target depths, and desired sample quantity and quality, as well as the overall purpose of the investigation (ie the target parameters).
4. Sample Handling
Preserving sample integrity during transportation and storage is crucial. Sample handling needs to consider the type of testing required, as well as protection from moisture change and temperature extremes. Properly sealed and labeled samples, along with clear field records, maintain the suitability of the samples for use in testing.
At Douglas Partners, we understand that representative soil sampling underpins reliable geotechnical testing. With our unwavering commitment to excellence and extensive experience in the field, we have honed our expertise in geotechnical site investigation and soil sampling techniques to support the collection of quality geotechnical data.
By robustly selecting sampling locations, employing recognised standards, utilising appropriate sampling techniques, we consistently deliver reliable and dependable results to our clients.
