seismic forces

List,

 

Based on the 2006 IBC (ASCE07-05), the seismic accelerations for Hayward, CA (right on the Hayward fault) appear to be about 60% lower than those for Sikestone, MO, and about the same as for Summerville, SC. 

Historic (1812 and 1886) considerations aside, any comments?

 

V. Steve Gordin, SE
Irvine CA