UNIFORM HAZARD VS. UNIFORM RISK BASES FOR PERFORMANCEBASED EARTHQUAKE ENGINEERING OF LIGHT-FRAME WOOD CONSTRUCTION

Abstract eng:
The seismic capacities of light-frame wood residential construction are determined using incremental nonlinear dynamic analyses for typical lateral force-resisting systems found in buildings in Eastern and Western regions of the US. The collapse fragilities determined are examined from the standpoint of the context of the inter-story drift limits stipulated in FEMA 356/ASCE 41-05. The probability of collapse, conditioned on the maximum considered earthquake, and the collapse margins of these typical shear walls are compared with those implied by the requirements in ASCE Standard 7-05. The results of this study provide insights into the relation between the current design earthquake, as stipulated in ASCE Standard 7-05, and proposed performance levels in PBE of light-frame wood construction, and convey implications for residential building risk assessment.

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