Correlations between ground motion and building damage. Engineering intensity scale applied to the San Fernando earthquake of February 1971
The correlation between ground motion and building damage was investigated for the San Fernando earthquake of 1971. A series of iso-intensity maps was compiled to summarize the ground motion in terms of the Blume Engineering Intensity Scale (EIS). This involved the analysis of ground motion records from 62 stations in the Los Angeles area. Damage information for low-rise buildings was obtained in the form of records of loans granted by the Small Business Administration to repair earthquake damage. High-rise damage evaluations were based on direct inquiry and building inspection. Damage factors (ratio of damage repair cost to building value) were calculated and summarized on contour maps. A statistical study was then undertaken to determine relationships between ground motion and damage factor. Several parameters for ground motion were considered and evaluated by means of correlation coefficients.
- Research Organization:
- URS/John A. Blume and Associates, Engineers, San Francisco, Calif. (USA)
- DOE Contract Number:
- EY-76-C-08-0099
- OSTI ID:
- 5339491
- Report Number(s):
- JAB-99-111
- Country of Publication:
- United States
- Language:
- English
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