What is the purpose of a gusset plate in a truss?

A gusset plate is an essential component of a truss, specifically designed to connect the various members of the truss structure, which can be made of either wood or metal. This connection is crucial for maintaining the integrity and stability of the truss, allowing it to effectively distribute loads and resist various forces, such as tension and compression.

By connecting the joints of the truss members, gusset plates help to create a strong framework that can span large distances while still being lightweight. Their use is fundamental in ensuring that trusses can perform their intended function in construction, especially in roofs and bridges where they must bear significant loads.

The other choices do not reflect the primary role of gusset plates in a truss. While insulation is important in construction, it is not a function of gusset plates. Aesthetic features are usually not the main purpose of structural components; rather, they focus on functionality and safety. Although strength is a critical consideration in truss design, gusset plates do not enhance the strength of the wood used but rather provide a means of connecting structural elements effectively.