Because while generations have passed since 1906, building codes have not forgot the fate of most of San Francisco's buildings, and the fault lines that most al

Because while generations have passed since 1906, building codes have not forgot the fate of most of San Francisco's buildings, and the fault lines that most all Californians deal with. https://en.wikipedia.org/wiki/1906_San_Francisco_earthquake https://en.wikipedia.org/wiki/1906_San_Francisco_earthquake https://en.wikipedia.org/wiki/San_Andreas_Fault https://en.wikipedia.org/wiki/San_Andreas_Fault