Strengthening of RC columns is necessary to meet the capacity requirement of staged building construction, which is a common practice in developing countries. In addition to axial capacity, moment capacity of RC column might also need to be upgraded to address the seismic demand. Therefore, it is important to investigate the effectiveness of strengthening of RC columns under both axial and bending moment domains. In this study, behavior of one of the strengthening methods, i.e., steel angle and strip jacketing of the RC column, has been experimentally studied under several eccentricities (i.e., eccentricity to column depth ratio of 0 to 0.45). In addition, the performance of a capacity prediction model of the steel strengthened RC column, available in literature, has also been investigated using the experimental results of this study and different past experiments. The results of the experiment have shown that the ultimate load capacity of steel jacketed RC columns has been reduced by about 15% for an increase of load eccentricity to column width ratio (e/d) from 0 to 0.45. The observed failure mechanism of the steel strengthened RC columns under eccentric loading is the failure of compression steel angle and subsequent concrete crushing. Further, the analysis result has shown that the capacity prediction model of the steel strengthened RC column can give a fair prediction where the composite action of the steel angle and RC column can be achieved (i.e., escaped from local welding failure and local buckling of the steel angle at the top of the column).