Drilling tapping screw joints are generally used for the thin-plate lightweight steel structure. As the span of the building increases, the joint stress increases and the number of drill screws increases. This causes deterioration of workability of the joint. If the drill screw joints can be replaced with a high-strength bolted friction joints, the number of screws required will be reduced and the workability will be improved. The purpose of this study is to obtain basic data on bolted joint strength and tightening control of thin-plate galvanized steel. Tightening tests and slip tests are conducted, and the effects of various variables are clarified.
