Rigid body mechanics. Planar and spatial system of forces: the assembly, disassembly and balance of forces and moments. Supporting structures: distribution, grading load, support. Internal forces in load-bearing structures. The deformable body. The concepts of stress and strain. The relationship between stress and strain. Basic rheological models. Linear elasticity. Temperature influences. Bending and shear in load-bearing structures. Unhindered torsion. Triaxial test. Yield surface: Mohr-Coulomb, Tresca and Mises. Mechanical characteristics of deformable bodies with focus on geomaterials. Fundamentals of anisotropic material properties. Axisymmetric problems in elastomechanics. Plane stress and plane strain condition.