Connections and joints refer to the critical elements in structural systems that serve as the links holding various structural members together and ensuring the stability of a building or infrastructure. These elements play a crucial role in transmitting loads, accommodating movement, and distributing forces throughout a structure. Properly designed connections and joints are essential for the safety and performance of the entire system. They come in various forms and serve distinct functions. Welded connections, for example, are commonly used in steel structures. Reinforced concrete structures often incorporate various types of joints, such as expansion joints and construction joints, to accommodate thermal expansion and shrinkage. Whether in bridges, buildings, or industrial facilities, connections and joints are critical components that should be carefully designed to ensure the reliability of the entire structure.