NEHRP Clearinghouse
- Title
- San Fernando Earthquake Damage Statistics.
- File
- PB80116791.pdf
- Author(s)
- Reed, J. W.; Whitman, R. V.
- Source
- National Science Foundation, Washington, DC. Engineering and Applied Science., August 1972, 33 p.
- Identifying Number(s)
- INTERNAL STUDY-13
- Abstract
- Damage probability matrices constructed from the data base information give the probability that different damage states occur for various levels of earthquake intensity, namely, the Modified Mercalli Scale. Each matrix relates damage to intensity for a particular class of building. As of August, 1972 the data base contained 1663 buildings with usable damage information for about 305 buildings. This report presents the various damage probability matrices which have been constructed since the beginning of the project. A computer program has been developed which computes damage probability matrices by height, age, structural type, and foundation type groupings. Both the damage cost and building value sources can be searched for in any pre-specified order and their values scaled by a prescribed factor. In the computation of a given matrix, therefore, several damage sources can be selected and searched in a predetermined order. Similarly, building value sources can be selected. By scaling the several floor area categories, they can be converted to a present building cost value. In addition, the buildings can be placed in any intensity zone and the damage state cost ratio ranges can be varied. Future work in this area is also discussed.
- Keywords
- Probability theory; Damage assessment; Earthquake resistant structures; California; San Fernando earthquake; Earthquake engineering; Buildings; Statistical data; Earthquakes