Design criteria in structural codes for reinforced concrete are based on the steel reinforcement yield strength. The tensile stress-strain behavior of FRP bar is essentially liner-elastic up to the tensile strength. Hence design with FRP reinforcement cannot follow the procedure adopted for steel reinforcement. The designer needs to consider the elastic modulus of the reinforcement to calculate the stress in the bars when the concrete reaches its limiting strain. Because FRP bars are composites of different polymers and fiber, one cannot assume a fixed value of elastic modulus that is applicable to all FRP reinforcement. Thus there is a need for a standard test method to characterize the elastic modulus of FRP reinforcement.