Reinforced concrete members often experiences a composite stress state of compression, bending, and shear under a load, and the reinforcement is the most important force transmission path in reinforced concrete members, so the reliable connection of reinforcement plays an important role in the safety and proper working of the structure. In this lecture, we’ll learn the reinforcement classification, reinforcement processing and reinforcement connection. The types of rebar can be divided by chemical composition or production process, and hot rolled steel bar is one of the most widely used steel products in construction engineering; Reinforcement processing includes straightening, cutting and bending; There are three main ways of reinforcement connection in construction works: binding, welding and mechanical connection.