Design case for CA seismic code is for the structure to be “survivable” during a 7.0 quake (but not necessarily operational after.) Buildings with more “importance” get a higher factor of safety applied to the structural design (hospitals, schools, fire stations, etc…). Hospitals in particular have the highest importance factor and been forced to go through seismic retrofits by the state. They are designed to run off-grid for 72 hours after a quake (massive diesel, sewage, water, O2 tanks…).
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