Hazard-consistent seismic losses and collapse capacities for light-frame wood buildings in California and Cascadia

Abstract We evaluate the seismic performance of modern seismically designed wood light-frame (WLF) buildings, considering regional hazard characteristics that influence ground motion duration and frequency content and, thus, risk. Results show WLF building response correlates strongly with spectral shape but weakly duration. Due to flatter motions from subduction events, buildings at sites affected by these earthquakes may experience double economic losses for a given intensity shaking, collapse capacities be reduced up 50%, compared those crustal earthquakes. These differences could motivate significant increases in design values achieve uniform risk targets American Society Civil Engineers (ASCE) 7 standard.