The branch of engineering that studies the behavior of soil and rocks. Geotechnics is used in structural rehabilitation to evaluate the bearing capacity of soil and rock.

Examples of geotechnical applications in the rehabilitation of concrete and steel structures:

• Geotechnical survey can help determine the bearing capacity of the soil, which is necessary to design the necessary rehabilitation measures.
• The geotechnical study can help evaluate the stability of the structure, which is necessary to determine if the structure needs to be reinforced.
• The geotechnical study can help design the necessary rehabilitation measures to ensure the safety of the structure.