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. Special static indeterminate systems: beams fixed at one and both ends, continuous beams, two hinged frame, fixed frame, truss systems. Beams on elastic foundation. Impact of moving load. Construction of influence lines for forces and displacements at cross sections. Displacement method: basic principles and unknowns. Plane structural systems: beam stiffness matrix, reaction vector, transformation matrix, boundary conditions, governing equations, force calculations at beam ends. Second order theory. Differential equation and its solution. Analysis of elastic stability of systems composed of line elements. Bifurcation stability. Basics of the structural dynamics. Discrete systems composed of line elements. Linear systems with one (single) and more (multi) degrees of freedom of movement. Free and forced undamped and damped vibrations: harmonic force, suddenly applied force, impulse, arbitrarily variable force. Numerical integration. Modal superposition and direct Integration. Application of structural analysis software.