Rebar, short for reinforcing bar, is a steel rod commonly used in concrete construction to provide additional tensile strength and structural integrity. It is typically made from carbon steel and features a ribbed or deformed surface that enhances its bond with concrete, preventing slippage under load. Rebar is essential in reinforced concrete structures such as foundations, beams, columns, slabs, and bridges, where concrete alone would be too brittle to withstand tensile forces. Available in various diameters, grades, and lengths, rebar can be cut, bent, and tied to meet specific design requirements. It plays a critical role in improving durability, reducing cracking, and ensuring the overall stability of concrete structures.