This study presents a new methodology for the structural design of multi-story precast concrete (Pca) structural walls with boundary columns, based on the truss-arch theory. First, we present a method of calculating with ease the shear strength of RC multi-story structural walls on the assumption that the ratio of the horizontal forces to be carried by the multi-story truss and arch mechanisms is constant. Next, we present a shear design method of the Pca multi-story structural wall that is easy and on the safe side. The method assumes that shear resistance mechanism with arch mechanism on each story is provided when slippage takes place at the horizontal joint of any story of Pca multi-story structural walls due to horizontal force. In the design model, the failure of the each-story arch mechanism is considered to govern the shear strength of the Pca multi-story structural wall where slippage is caused at its horizontal joint, as well as govern the failure type. In addition, a design sample using the proposed design method for Pca multi-story structural walls is presented.
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