The graduation thesis presents the design and dimensioning of flat reinforced concrete slabs. It also includes a computational check of the punching shear resistance of the slab. A simplified procedure is carried out based on the equivalent frame analysis. All static calculations are carried out in SAP2000 software. The thesis presents the structural analysis of four equivalent frames, with two frames in each direction (one edge frame and one central frame), and the dimensioning of two chosen load-bearing elements of the concrete structure. The chosen load-bearing elements are two flat reinforced concrete slabs, more precisely a roof slab and a mezzanine slab, both 30 cm thick. These two elements are supported by round reinforced concrete columns, which measure 50 cm in diameter. The roof and mezzanine slabs are checked for punching shear at four points, more precisely at the corner column, two edge columns and one internal column. The dimensioning of the columns and the foundations of the building is not covered in this thesis. All calculations are in accordance with the relevant Eurocode standards and the corresponding national annexes to these standards.