Abstract
Steel bars mechanically anchored with plate heads are being applied in place of 180-deg hooks. The method uses the bearing plates attached to the ends of the reinforcement to secure anchorages, and it is hoped that it will provide a solution to the problem of greater difficulty of execution and associated increased costs due to the requirement for higher-density reinforcement to improve seismic design, in recent years. Therefore I developed a plate nut fixed in the reinforcing steel bar. About the plate nut which we developed, we made the performance examination of each case. As a result of examination, the nuts with plate confirmed a thing having performance at the same level as conventional 180-deg hooks.
