Geotechnical engineering is a sub-discipline of civil engineering. It involves the use of soil mechanics and rock mechanics principles in the design and field applications of foundations, retaining structures and other soil structures. It is known that today's understanding of geotechnical engineering began in the 18th century. It is known that today's geotechnical engineering approach began in the 18th century. Throughout the process, important developments in the field have been revealed. In contemporary geotechnical engineering, solutions can be produced to many problems.

This section involves ground motion prediction equations, soil amplification factors at different period values in site-specific analyzes, determination of dynamic parameters of soils, geotechnical study of urban transformation area, development process of internal erosion testing equipment in fine grained soils, equations used for prediction of earthquake-induced crest settlement of embankment dams, resonant column testing system, chemical stabilization applications, soil  improvement with using natural and synthetic fibers and microzonation and microtremor measurement.