The need for an alternative to steel reinforcement (RFT) in areas of severe environmental conditions and areas sensitive to magnetic fields has emerged the use of Fiber Reinforced Polymers (FRP). Experimental and analytical studies of FRP reinforcement are still less than that of steel RFT. In this study, seven slabs reinforced with local Glass Fiber Reinforced Polymers (GFRP) were tested under four points bending configuration. Load-deflection behavior, as well as strains in slabs, was recorded in order to investigate slab's ductility and flexural behaviors. The main parameters of the experimental work included RFT ratio, and shear span to effective depth ratios (L_sh/d_eff.) Analytical models used to predict these behaviors were implemented in order to compare the results with experimental work. The results of this research work indicated that crack behavior and load deflection curves can be simulated using analytical models and can be reasonably used for the prediction of the behavior of the tested slabs.