In recent earthquakes, it has been reported that members supporting air-conditioners (suspension support members) have been cyclically deformed and fractures at the suspension source or equipment support. The fall of the equipment due to the fracture of suspension support members is a serious damage that directly leads to the loss of building functions. In this study, cyclic loading tests were conducted to investigate the stiffness, strength, and low cycle fatigue characteristics of the suspension support members. Based on these findings, the results of the study on the necessary strength of the suspension support members were presented.
