Abstract
AbstractThis paper presents a study to statistically characterize the joint earthquake–snow hazard and subsequently develop maximum interstory drift fragility curves for a series of archetype engineered light-frame wood structures. Of particular focus are structures built in moderate-seismic, heavy-snow regions. For these light-frame structures, the additional seismic mass due to the presence of roof snow may be significant. Although load standards such as ASCE 7 provide guidance on combining design loads when considering life safety (e.g., flexural and shear limit states), guidance is not yet available for other performance levels (limit states with specified nonexceedance probabilities), performance (rather than safety) based limit states or damage indicators (e.g., maximum interstory drift), and hazard levels other than those implied in life safety design (e.g., 2%/50 years). All of these are expected to become more relevant as performance-based design procedures continue to evolve and gain acceptance...
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