This paper describes an experimental study on the tensile capacity of post-installed rebars setting with adhesive. Eighty-one specimens containing single or double rebars were tested by an extraction tester to investigate the influence of embedment depth, edge distance and spacing of rebars on the tensile behavior of rebar system. The experimental results show that embedment depth is the most significant factor for rebar capacity and failure mode. The edge distance and the spacing effects are more significant only for the rebars with insufficient embedment depth. This study also attempts to evaluate two available design procedures provided by manufacturers. The comparison between the experimental data and predicted values calculated according to the two design procedures shows that both of the design approaches lay on the conservative side.