NEHRP Clearinghouse
- Title
- Optimum Seismic Protection for New Building Construction in Eastern Metropolitan Areas. 1957 San Francisco Earthquake Tall Building Damage Review.
- File
- PB293026.pdf
- Author(s)
- Hong, S. T.; Reed, J. W.
- Source
- National Science Foundation, Washington, DC. Applied Science and Research Applications., December 1972, 8 p.
- Identifying Number(s)
- INTERNAL STUDY-22
- Abstract
- A study to estimate the damage states of buildings resulting from the March 22, 1957 earthquake in the San Francisco bay area is reported. The earthquake, of Richter magnitude 5.3, caused strong ground motion and lasted about 5 seconds. Most of the data used for this report is derived from a previous report, published in 1957, which gives a descriptive measure of damages to 11 thirteen-story apartment buildings, 4 ten-story apartment buildings, and 6 downtown office buildings. The damage states of the buildings, assumed to be the only ones damaged, are assigned by comparing descriptions given in the report with those defined in the San Fernando Study. Information on 1103 buildings, used to construct the damage matrix, are based on the Sanborn maps of San Francisco up to 1967. A chart of the damage matrix divides the data into two parts, one which includes the Lake Merced area, and the other, which excludes it. Since the number of damaged buildings is so small, it is concluded that the damage potential of the MMI VI seismicity reported for the earthquake is negligible. The report also contains an isoseismal map of the 1957 San Francisco Earthquake and areas covered by the Sanborn maps of San Francisco.
- Keywords
- Damage assessment; Earthquake resistant structures; Tall buildings; California; Buildings; Earthquake engineering; San Francisco (California); Dynamic structural analysis