Simplified Direct Displacement Design of Six-Story NEESWood Capstone Building and Pre-Test Seismic Performance Assessment

Keywords: Direct displacement design (DDD).  NEESWood Capstone Building.  Seismic performance.  Multistory structures.  Woodframe structures.  Residential structures.  Shear walls.  Interstory drift limits.  Nonlinear time-history analyses.

Abstract: This report presents a simplified direct displacement design (DDD) procedure which was used to design the shear walls for a six-story woodframe structure. The building will be tested in the final phase of a Network for Earthquake Engineering Simulation (NEES) project.  Specifically, NEESWood Capstone Building was designed to meet four performance expectations: damage limitation, life-safety, far-field collapse prevention, and near-fault collapse prevention.  The performance expectations are defined in terms of combinations of inter-story drift limits and prescribed seismic hazard levels associated with predefined non-exceedance probabilities.  The distributions of inter-story drifts obtained from the NLTHA confirm that the Capstone Building designed using DDD meets all four target performance expectations, thereby validating the DDD procedure.