 The design of glass-fiber-reinforced concrete panels uses a knowledge of its basic properties under tensile, compressive, bending and shear forces, coupled with estimates of behavior under secondary loading effects such as creep, thermal response and moisture movement.There are a number of differences between structural metal and fiber-reinforced composites.For example, metals in general exhibit yielding and plastic deformation, whereas most fiber-reinforced composites are elastic in their tensile stress-strain characteristics.