This project qualitatively and quantitatively analyzes the structural state of the Nice building, initially recognizing its characteristics and precedents, because the building was built before the NSR-10 standard. Buildings built before the current standard presents an uncertainty of the quality of the materials, since they can lose their properties over time and there is no record of the amount of reinforcing steel supplied in its initial construction. Due to the above, a preliminary identification of the physical injuries and pathologies of the building was carried out, among which the majority were due to humidity. Destructive and non-destructive laboratory tests were carried out to characterize the mechanical properties of the materials and a concrete compression stress f'c of 3100 psi was determined. With the data obtained in the laboratory, a numerical model in finite elements was built to perform a seismic analysis and determine the vulnerability of the building under study following the specifications of chapter A.10 of the NSR-10. Finally, the results are analyzed and a reinforcement proposal was made.