Seismic Response and Design of Steel Multi-Tiered Concentrically Braced Frames of the Conventional Construction Category in Moderate Seismic Regions of Eastern Canada

This paper examines the seismic behaviour of steel Multi-Tiered Concentrically Braced Frames (MT-CBFs) Conventional Construction category (Type CC) in moderate regions eastern Canada and proposes a new design method for such structures. A total 32 prototype MT-CBFs part single-storey building are selected designed accordance with 2019 Canadian standard (CSA S16-19) provisions Type CC structures, excluding requirements prescribed frames taller than 15m, namely amplification forces varying by frame height column factored force. Nonlinear response history analyses then performed to examine their response. The results confirmed that tiers experience limited lateral deformation, intermediate horizontal struts required between tiers, columns subjected combined axial force bi-axial bending, which some cases led buckling. used propose framework CSA S16.