Abstract: Experimental research has been conducted at the Structures Laboratory of the University of Ottawa to investigate the seismic performance of FRP reinforced concrete structural elements. Large scale columns and beams are being tested under simulated seismic loading. Fiber Reinforced Polymer (FRP) reinforcement is being developed in the form of longitudinal bars and transverse grids for use in new concrete elements in bridges and buildings. Since, this kind of reinforcement shows linear stress-strain characteristics up to failure and has low ductility, serious concerns should be considered about their applicability to earthquake resistant structures. The results of selected tests are summarized in this study, with the assessment of their significance from seismic performance perspective. Column and beam specimens were tested under lateral deformation reversals. The members were reinforced with carbon FRP bars in the longitudinal direction and carbon FRP grids in the transverse direction. Both the columns and the beams sustained a minimum of 2-3% lateral drift ratios, meeting seismic drift limitations of most building codes. Test results indicate that FRP reinforced concrete elements exhibit reduced stiffness and softened response because of the lower elastic modulus of FRP bars. This may suggest reduced spectral values associated with longer vibration periods, as well as increased deformability, resulting in seismic resistant structures for which elastic design approach with sufficient deformability may be appropriate.