This diploma thesis addresses the structural assessment of selected existing floor structures in the cultural heritage building Stiški dvorec in Ljubljana as part of a planned renovation. Due to the building age and the use of traditional structural systems, the adequacy of individual floor structure elements was verified using contemporary design standards and verification procedures. Based on an assessment of the existing condition and structural characteristics, two representative structural elements were selected for detailed analysis. First, the floor structural system of Prussian vault was analysed which is followed by the analysis of classic timber beam floor structure, which occur in different parts of the building. For both structural floor systems the description of damage and boththe evaluation of load-bearing capacity and serviceability are presented in the thesis. Based on the obtained results, a general proposal of remedial measures is also provided, aimed at improving mechanical resistance and long-term structural stability while taking into account the protection of cultural heritage
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