ABSTRACT
Chapter 11 of ACI 440.2R-08 provides a model to compute the extra shear strength furnished by FRP to concrete beams and columns. This extra shear strength depends on the concrete strength, the type of FRP wrapping scheme, the geometry of the concrete member, and the amount of steel shear reinforcement provided. For external FRP shear stirrups in the form of discrete strips, the center-to-center spacing between the strips should not exceed d/4 plus the width of the strip. In other words, the clear distance between the strips should not exceed d/4.
