Seismic Vulnerability Assessment for Residential Buildings in Osijek, Croatia

Abstract eng:
This paper deals with 100 residential buildings from many parts of Osijek, the fourth largest city in Croatia, all built between 1962 and 1987. The aim of this paper is to provide the first steps in assessing seismic risk in Osijek, which has been achieved through an investigation of the building typology by site investigation and existing plans and documentation. Apart from the data about the main building types, some additional parameters, such as geographical location, position in the block, plan view geometry, number of storeys, built-up area, the age of buildings, structural system, main construction material and the number of occupants are also collected. These parameters are important for determining the seismic vulnerability of existing buildings as an element of seismic risk, i.e. the probability of loss at a given site obtained through the convolution of exposure, vulnerability and seismic hazard. The macroseismic approach for seismic vulnerability methodology is provided. Vulnerability class is defined for each building after identifying the building’s primary structural system and building damage assessment is carried using vulnerability index method. The resulting vulnerability of the considered residential buildings provides insight necessary for emergency planning and for identification of critical objects vulnerable to seismic loading.

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