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Earthquake Damage Estimates of Conventional and Isolated Structures

by Trevor E. Kelly, Dynamic Isolation Systems, United States,
Ronald L. Mayes, Dynamic Isolation Systems, United States,
Stephen Weissberg, Dynamic Isolation Systems, United States,



Document Type: Proceeding Paper

Part of: Seismic Engineering: Research and Practice

Abstract:

The philosophy inherent in current seismic design codes for buildings accepts the premise that there will be both structural and non-structural damage but that life safety will be preserved. Estimating a dollar value for the cost of earthquake damage although difficult is the subject of this paper. Two 4-story structures, a moment frame and a braced frame are evaluated in a conventional and an isolated configuration. The results show that seismic isolation reduces the cost of earthquake damage by a factor of 5 in a moderate seismic zone and a factor of 6 in a high seismic zone.

Subject Headings: Seismic design | Earthquakes | Structural safety | Seismic tests | Earthquake resistant structures | Benefit cost ratios | Structural analysis

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