Growing demand in sustainable high‐rise timber structures is satisfied by proposing innovative structural systems that enhance the building's stiffness, strength, and energy‐dissipation capacity. This study propose and develop the performance‐based design (PBD) guideline for balloon type cross‐laminated timber (CLT) coupled wall (CLT‐CW) structure. In this system, the CLT shear‐walls are connected with energy dissipation coupling beams that comprise shear‐links and in return reduce the seismic demand of the system. To facilitate the desired rocking deformation mode of CLT shear‐wall panels, buckling‐restrained brace (BRB) hold‐downs are used. Utility of the proposed system and design is applied on a 20‐story balloon CLT‐CW system. To investigate the effect of coupling ratio (CR$CR$) on the behavior of the system, five CR$CR$ values (10%–50%) are used. Nonlinear and incremental dynamic analyses (IDAs) are performed using suitable set of 30 ground motion (GM) records that reflects the seismicity of Vancouver, Canada. Fragility curves are developed and compared considering both the collapse and non‐collapse limit states. The results show that, for a given CLT‐CW system, a system with higher CR$CR$ value exhibits better seismic performance.

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The desire of using sustainable materials has reignited the interest in timber-based construction. Researchers and practitioners are developing novel timber-based structural solutions. Cross-laminated timber (CLT) coupled-wall is a recently proposed system for potential use in mid- and high-rise timber construction. The National Building Code of Canada, however, does not include this system and consequently, the seismic force modification factors are not available. This study evaluates the ductility-related force modification factor (Rd=4) using the FEMA P-695 procedure. Nine archetype buildings are designed considering different design parameters: building storey height, CLT wall configuration, and coupling ratios. Using 30 ground motion records (bi-directional), rigorously selected for seismicity of Vancouver - Canada, incremental dynamic analyses are performed. Collapse margin ratios are calculated to assess the adequacy of the trial Rd factors. Using an over-strength factor of 1.5, Rd=4 is found to be acceptable for this system.