A reinforced concrete slab is a flat, horizontal surface made from concrete that has been strengthened with steel bars or mesh. This combination of materials allows the slab to support heavy loads and resist cracking, making it ideal for floors, roofs, and bridges. The steel reinforcement helps the concrete withstand tension forces, which concrete alone cannot handle effectively. These slabs are commonly used in construction due to their durability and versatility. They can be cast in place or prefabricated, depending on the project requirements. The use of reinforced concrete slabs is essential in modern architecture and engineering, contributing to the stability of structures like buildings and parking garages.