Geotechnical Engineering

Investigation of soil depends upon the type of soil and its topographic condition but not to the number of storeys.

For a three-storey building, the soil must be stable with good bearing capacity and does not show any settlement in the previous loading.

The following are the tests performed on the soil to check its geotechnical properties during the construction of any structure; it may be three storeys or more.

1. Moisture content of soil determined by oven drying method, calcium carbide method torsion balance method, pycnometer method, radiation method, alcohol method and sand bath method.
2. Test of specific gravity: it is the ratio of the density of soil to the density of water.
3. Test of Dry Density: it depends upon the value of void ratio and a specific gravity of soil. This test is used to determine the soil as a medium dense, loose and Dense.
4. Test to find atterberg limit: three types of the limit are there that is the liquid limit, plastic limit and shrinkage limit.
5. Compaction test on the soil by proctors method.
6. Bearing capacity value of soil.
7. Penetration test on soil
8. Share test on soil: it is performed by the direct shear test method, triaxial compression test, unconfined shear test, Vane shear test.

Hope you get the answer.

As a civil engineer to check the geotechnical properties of soil, three guests must be performed the shear test, bearing test, and penetration test.

A penetration test is performed by three methods,

1. standard penetration test
2. A dynamic cone penetration test
3. Cone penetration test or Dutch cone penetration test.

In Geotechnical engineering, the value of standard penetration test is widely used for determining technical properties of soil.

1. To check the soil parameters
2. Value of cohesion and angle of internal friction with imperial relations.
3. To know the deformation modulus.
4. To check the consistency of soil
5. For determining the bearing capacity of soil

This test is globally used to determine various engineering and geotechnical properties for soil investigations.