Light gage bearing wall is usually designed as a cantilever column. Therefore, due to over-turning moment from the upper floors, high axial force must be considered at the base. Hold-down components are used to connect the bearing wall to the foundation to resist these high axial forces; it is one of the most important seismic element to guaranty the structural safety.
The purpose of this study is to clarify the connection strength of the hold-down component which is connected by drill screws. Finally, design formula than can evaluate the shear lap joint connected by drill screws was proposed, and the validity of the proposed formula was also demonstrated with the test results.
