Pacific earthquake engineering research/seismic safety commission tall building design case study 2

The results from two methodologies for the structural design of a 42 story building located in Los Angeles, California, and a description of the properties used to model the structure for both cases are summarized. The building is laterally braced by a concrete shear wall core and two four‐ bay concrete special moment resisting frames (SMRF) in each direction. The first design is based on a modal response spectrum analysis as prescribed by the International Building Code (ICC 2006 ). The second design, as prescribed by Los Angeles Tall Building Design Council ‘An Alternative Design Approach for Tall buildings’ (LATBSDC 2008 ), with some exceptions, requires the building to satisfy service level criteria using a modal response spectrum analysis and a collapse prevention evaluation using 7 time‐history non‐linear analyses.