Geotechnical tests are carried out by proficient engineers or technicians. They perform these tests to understand the characteristics like physical properties that exist beneath a work site with the help of geotechnical testing equipment or equipments. In this article, we will talk about four major geotechnical testing types that geotechnical engineer performs.
- Test pits
- In-situ testing
As you expect, in this testing method, geologists dug a pit either manually or with an excavator to determine the sub-surface conditions to the depth desired.
Trenching test method is similar to test pits. The only difference is that the pit is elongated over some distance to find the reasons behind the change in sub-surface conditions over various parts of the work site.
Engineers may take a range of soil samples with the help of shovels, manual augers, split spoon samplers, Shelby tube samplers, and modified California samplers.
Generally small-diameter borings provide potential to engineers to manually remove soil or rock samples in order to perform testing. Borings allow the experts to see the actual materials, but of the certain types of soils. Act of boring can affect the soil conditions and engineers may get the inaccurate sample that cannot reveal the real conditions to support buildings and structures.
Usually, soil samples from the above tests are sent to the testing labs where they are evaluated.
In-situ testing includes penetration tests like standard penetration tests, which is done with drilling method, and various cone penetration tests, which are done with direct pushing methods.
Engineers select the right method for the right situation to achieve desired results. They have proper understanding of these testing methods. They are aware of the benefits and limitations of each method and this knowledge helps them in handling clients and expanding the business. They determine better results at faster rate with minimal investment.
The effort and detail of the geotechnical site testing to get precision site details is complex. Various factors are there that influence the design of a foundation for a building, such as-
- Design criteria of the proposed structure
- Geotechnical testing equipment availability
- Historic knowledge of site conditions
- The complete costing
For more information on the methods used by geotechnical engineers and specialists, you may contact the lab experts. To feedback for this post, pour your comments below and talk to other readers.