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Hello all Can we say that if a building has heavy mass,it is called a flexible structure just because w=sqrt(k/m) meaning frequency is low and time period is high.it means the body takes long time to come to rest.if the structure is flexible,as the ground displaces,its base starts undrgoes large deformation,but the structure tries to remain static?does this mean,during earthquake of longer periods,the buildings fail due to large deformation of its base?in flexible structures,the acceleration at the top is almost zero,so earthquake acceleration is very negligible over its inertial mass,right? can you please explain,base isolator are required for flexible buildings? And please explain the response difference between flexible and rigid structures,please enlighten me
