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Civil Engineering Faculty, University of Montenegro, Podgorica, Montenegro
Civil engineering faculty, University of Montenegro, Podgorica, Montenegro
It has been observed that in earthquake-affected areas, structures with a configuration classified as torsionally irregular are more prone to damage than regular structures. Modern seismic provisions have introduced criteria for determining if the structure is torsionally sensitive and guidelines for designing them. Eurocode 8 prescribes criterion which is based on characteristics of natural vibrations of building while in most of the other regulations criterion is based on comparison of maximum and average story drift. The assessment and comparison of provisions for torsionally irregularity is performed on 18 structures. Six layouts of structure were created by varying the position of structural elements in order to create different levels of torsional irregularity. Because of the different approach in the classification of building regarding torsional irregularity it is noted that there are conflicting results in different regulations.
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