Risk Assessment of Historic Residential Brick-Masonry Buildings in Vienna by Rapid-Visual-Screening

Abstract eng:
In recent years the evaluation of risk levels of existing buildings by Rapid-VisualScreening (RVS) has become a common tool for seismic hazard assessment. If RVS is applied to buildings of similar type located in a well-defined urban area, it is useful to specify and to adapt existing screening rules and forms to the needs of these buildings. In a research effort presented in this paper the RVS procedure is adapted for the seismic assessment of historic residential brick-masonry buildings located in the City of Vienna, Austria. Considering the consistent building typology the proposed RVS methodology enhances the validity and quality of the seismic hazard assessment of this type of buildings. The evaluation and assessment methodology is based on two parameters, i.e. the damage relevance DR, and the structural parameter SP. Limiting conditions of the damage relevance DR are generated for risk classification to consider human and economic influence of damages on a certain building. The structural parameter SP consists of several indicators to describe the condition of certain structural parts of the building itself. In a large-scale in situ investigation a set of 375 buildings within the 20th district of Vienna has been evaluated by the proposed methodology. The results of this visual investigation are integrated into a local seismic building hazard map.

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