What type of questions asking in interviews based on soil exploration and give me with answers

Although information on exposed soil at the soil surface is very valuable, geotechnical engineers also need to assess sub-surface conditions by sampling by drilling or by digging exploratory wells. These activities are termed subsurface exploration.

The extent of exploration depends on the importance of the structure, the complexity of the soil conditions and the budget available for exploration. A detailed soil exploration program involves deep drilling, field testing and laboratory testing to determine the different soil properties required for the design of any structure.

The function of a properly designed foundation is to withstand loads resting on it without causing excessive stresses within the soil mass to any depth below the foundation. Efforts are considered excessive if there is a complete breakdown within the soil mass (shear failure), or if detrimental settlements occur (failure due to excessive settling). Therefore, it is evident that one of the most important steps in solving a baseline problem is the determination of underground conditions that will affect the design. Field and laboratory research needed to obtain the necessary information on geology, hydrology and soil conditions; The geotechnical properties of the soil at the prospective construction site, and the yield of various types of soils encountered when acting on structural loads, water and temperature are called sub-surface investigations or soil exploration program.