This final thesis observes and processes continuous beam with 5 supports loaded with continuous load q1 in the first segment, vertical load F1 and F2 in second and first segment and continuous load q2 in the last segment. These beams are statically indeterminate because number of unknown values of forces in reactions, internal or external, are larger than number of independent equations which express equilibrium condition and these beams are calculated using Three-moment equation also called Clapeyron equation. It is required to calculate the beam in two variants, first variant consists of having a constant flexural stiffness throughout entire beam length, and second variant where the flexural stiffness differs in different segments and its required to compare the values of both and draw conclusions. After completed calculations, the beam with constant flexural stiffness has to be dimensioned, and the matching profile has to be chosen on the principle of light metal constructions. This thesis has includes studying literature and solving similar examples to acquire experience in work with these problems. In this graduation work it is required to determine reaction forces in supports A, B, D, F, G, and construct corresponding diagrams of internal forces and bending moment.