This final year project presents the structural assessment of part of reinforced concrete port warehouse No 17 in Rijeka. The building consists of 5 floors (basement, ground floor and three storeys) with floor plan dimensions 45 x 100 m. This warehouse was built from 1906 till 1909 and is one of the oldest structures in Croatia constructed entirely as a reinforced concrete structure, therefore it is protected as a heritage monument. Structural analysis were performed for persistent and seismic design situations. A 3D model of the structure was made in STAAD.Pro, while the structural assessment was performed based on the assumed material properties which were common for the time of the construction. The quantity and arrangement of reinforcement needed for the for structural capacity calculus were determined on the basis of the reinforcement drawings available from the archive. The bearing capacity of the roof and floor slabs and the main beams of the transverse frame was analyzed for vertical actions. In order to check the seismic resistance of the transverse frame linear calculation method based on displacements was applied according to HRN EN 1998-3:2011.