This study presents a method to evaluate the shear strength of multi-story precast concrete structural walls with slip at horizontal joints. An analytical model, which considers the shift from the truss and arch resistance mechanisms to the each story arch mechanism after the horizontal slippage, is idealized. This proposed analytical model assumes that the total shear strength of a multi- story wall is the sum of the shear strength when slip occurs at wall joints and the combined shear resistance provided by arch mechanism in each story after slip. Experimental test results on shear strength and failure mode of 50 multi-story precast concrete structural wall specimens are presented. The proposed model provides safe strength estimates and agreeable results on failure mode.
