The bachelor thesis focuses on the static calculation of a reinforced concrete monolithic ceiling structure, the prefabricated staircase of an apartment building in Sedlešovice and the creation of a complete 3D model with reinforcement using the BIM method. SCIA Engineer 21.1 was used to calculate internal forces, where a 2D model of the slab and a 3D model of the staircase were created. The calculation program was then also used to calculate the deflection of the floor slab. The proposed reinforcement in the designed structures was modeled in Tekla Structures. Subsequently, drawings were created from these models. The created 3D model with the complete reinforcement elements of the designed structures was uploaded to Trimble Connect, where it was connected with the construction part to make the apartment building model complete. The bachelor thesis was prepared in a compatible BIM environment in collaboration with the Department of Civil Engineering.