An overview of the basic equations of the linear beam theory. Statically indeterminate structural systems. Force method: basic determinate structure, forming and solving governing equations. Calculation of forces and displacements at cross sections. Special static indeterminate systems: beams fixed at one and both ends, continuous beams, two hinged frame, fixed frame, truss systems. Introduction to seismic analysis of structures. Basics of the structural dynamics. Linear systems with one (single) and more (multi) degrees of freedom of movement. Free and forced undamped and damped vibrations. Basic terms of earthquakes. Seismic action: record of the ground acceleration and the response spectrum. Determination of the responses of linear discrete systems: modal response spectrum analysis and direct integration. Application of structural analysis software.