Micro Seismic Hazard Analysis

Natural frequency of buildings• Buildings tend to have lowernatural frequencies when theyare:• Either heavier (more mass)• Or more flexible (that is less stiff).• One of the main things thataffect the stiffness of a buildingis its height.• Taller buildings tend to be moreflexible, so they tend to have lowernatural frequencies compared toshorter buildings.