RWB-SKELT Reinforcement System is designed and manufactured with  WB/GFRP rebar for pre-cast members. During the life of the structure, the stress inside the segment is only in compression. Therefore, it is possible to void all the problems related to the long term effects on the GFRP and from a  tructural design point of view, to limit the negative design effects due to the low elastic modulus of the GFRP compared to steel.