المجلة الدولية للعلوم والتقنية

With the development of construction engineering and construction structures, whether buildings, roads, bridges, or bridges, reliance on these beams has increased in modern architectural and engineering designs, and research and studies that seek to achieve sustainability in the building and construction engineering sector have become a priority. Developing design strategies for developing concrete structures and beams has become an important requirement. To many engineers, clients and contracting companies. Through this study, which aims to enhance the performance of concrete beams? Reinforced by adding fiberglass rods through a methodology based on numerical verification and laboratory verification of the performance of these concrete beams when adding fiberglass rods . The results indicate that the use of fiberglass rods in reinforced concrete beams leads to an increase in the beams’ tolerance to stresses, especially the bending stress, by a percentage ranging from 16 to 20%, but Reduces the stiffness of beams It also reduces the strains resulting from stresses by a percentage ranging from 8 to 15%, but these percentages vary according to the factors affecting the performance of the concrete cameras, such as the diameter of the bars, the method of attaching the bars to the concrete, the surrounding weather factors, as well as the type of loads.............. Keywords:.............(fiberglass bars , performance of concrete beams. tension and pressure, Stresses., displacement, Strain, and Flexibility)