Micro Seismic Hazard Analysis

Building resonance and seismichazard (2)• Height determines resonance frequency:• Low buildings: high resonance frequencies (largewavelengths)• Tall buildings: low resonance frequencies (shortwavelengths)• In terms of seismic hazard:• Low-rise buildings are susceptible to damage fromhigh-frequency seismic waves from relatively nearearthquakes and/or shallow depth• High-rise buildings are at risk due to lowfrequencyseismic waves, which may haveoriginated at much greater distance and/or largedepth