In this thesis, we investigated the properties of concrete reinforced with steel fibers. We have considered the influence of the orientation of fibers on the mechanical properties. We describe their own process of making molds in workshop and manufacturing process of the specimens in the concrete plant. Experimentally we measured the strength of the test specimens of various shapes, with a variety of steel fibers. We also made bending tests. We have found that the shape of the test specimen and the direction of casting of concrete into the mold affects the size of the compressive strength of the fibrous concrete.