Rigid joints are connections between two or more parts that do not allow any movement. These joints are designed to maintain a fixed position, ensuring stability and strength in structures. Common examples of rigid joints can be found in buildings, bridges, and machinery, where maintaining alignment is crucial for safety and functionality. In engineering, rigid joints are often created using materials like steel or concrete, which provide the necessary support. They are essential in applications where movement could lead to failure or damage, such as in the construction of skyscrapers or heavy equipment.