With the reinforced concrete member which cut-off method was used for, the rebars which acts different bond stress exists together in the same section. The study is not done very much so far about the bond properties of the reinforceing bars under such a stress condition . In order to bond splitting strength of bundled bars with uses cut-off method, bond tests were executed in which the bundled form, the transvers reinforcement ratio and the bond stress ratio of through arranged rebars and cutt-off rebars. From this test, it became clear that bond stress ratio has influence on the bond splitting strength of cut-off rebars. The bond splitting strength of the cut-off rebars was formulated based on previous bond splitting strength equation about bunded rebars.
