The seismic retrofit topic is very debated nowadays, especially for those Countries that can count on a large number of existing, old and historical buildings. Many of these cannot be repaired or retrofitted through the most common systems (i.e. shear walls, base isolators, dampers…) due to architectural constraints and/or to budget limitations. Thus, the Fiber Reinforced Polymers (FRP) impose themselves as one of the best seismic retrofit system for existing buildings. The International Codes provide standards concerning the design of FRP wraps for a certain geometry and for a certain stress, but a set of rules for the placement on the structural elements is unknown.