A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology

Thesis (M. Eng.) - Asian Institute of Technology, 2022

The buildings subjected to wind and seismic loading often have their design governed by the wind load demands. This is because seismic design demands are reduced by employing the concept of structural ductility, whereas wind design remains elastic. This results in larger structural sizes which in turn increases the seismic demands as well. The approach of including ductility in wind design has been proposed and demonstrated by many previous researchers, however, a standard document that includes this approach has only recently been published. In 2019, ASCE published the Prestandard for Performance-based wind design (PBWD) that allows for selective ductility in structure for severe wind cases. In this study, a 93-story tall building in high wind and the moderate seismic region was selected to evaluate the effect of PBWD on the seismic performance of the building. The design methodology was divided into two design steps, with the first step following the conventional design practice of ASCE 7-16 code-based wind design followed by the seismic evaluation. The second step involves PBWD as an alternative to code-based wind design and again the seismic performance was evaluated. The results from two design approaches were then compared to identify the effect of PBWD on building performance. The comparison suggests that the building wind-induced responses predicted using the PBWD procedures were more economical when compared with those obtained from the wind load provisions in ASCE 7-16 design code. Additionally, the seismic performance of the building was also improved when the building is first designed using PBWD.