What is the term for a device that connects two or more structural members together?

The term that refers to a device used to connect two or more structural members together is known as a joint. Joints are crucial in structural engineering because they facilitate the transfer of loads between different components, enabling the structural system to behave as a unified whole. The design of joints is vital for maintaining the integrity and stability of a structure, as they are where forces such as tension, compression, and shear are transmitted.

While other terms like beam, brace, and connection plate have specific meanings in structural design, they do not fulfill the same role as joints. A beam is typically a horizontal structural element that supports loads, while a brace is an inclined member used to support a structure by resisting lateral forces. A connection plate is a type of connector but specifically refers to a plate used at joints to facilitate the connection and transfer of loads. In contrast, a joint encompasses all types of connections between structural members, making it the most accurate answer in this context.