The assigned topic addressed in this final thesis is the calculation of triangular slabs. Following the calculations and adhering to theoretical conclusions, regulations, and standards, the behavior of a reinforced concrete structure composed of triangular slabs and beams is presented. The theoretical part explains the function of slabs carrying loads in two directions: -x and -y. In the static calculation, the slabs were dimensioned for bending moments. Relevant areas of the main reinforcement were selected, based on which satisfactory reinforcement meshes were determined. The dimensioning of reinforced concrete beams for bending moments and shear forces in the field and above the support was also performed, resulting in the required quantity of reinforcement bars of a specific diameter. Calculations were made for the minimum and maximum values of reinforcement areas, which should serve as the limits below or above which the adopted reinforcement obtained from the calculation should not go. An expression and reinforcement plan for the structure were created through the calculations. The accuracy of the "manual" calculation was verified using Tower, a computer software for the dimensioning of reinforced concrete structures.