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This paper presents a case study of investigating damage and assessing the current detailed technical state of the historic apartment house located at No. 31 in Dobra Street in Warsaw. The purpose of this assessment is to determine the possibility of the reconstruction of its last overground storey and the utility attic. Moreover, the impact of the second underground line construction process and the influence of transport vibrations caused by both the street traffic and the underground on the damage of the supporting structure of the building is determined. The study was conducted in order to prepare the design for the planned last overground storey reconstruction considering the influence of the construction process on the adjacent buildings and the surrounding urbanized area. The study of the building documentation and the field investigation on damage in the existing building allow the authors to conclude that the current technical condition of this building does not exclude the possibility of making the superstructure of this building. Moreover, the results of the carried out vibrations transmitted by the ground to the load-bearing structure of this building show that neither the transport-caused vibrations nor the noise do not cause a harmful effect both on the damaged masonry supporting structure of this building, as well as on its residents. The conditions of reconstruction of this historic building are also specified in this paper.

Technical diagnostics of the historic apartment house located at No. 31 in Dobra street in Warsaw