What are gusset plates?

Gusset plates are indeed connecting plates made of a thin sheet of steel that are used in truss assemblies and other structural frameworks. Their primary function is to join together different structural members, such as beams and trusses, enhancing the overall stability and integrity of the structure. Gusset plates provide a means to effectively distribute loads across the structural elements, allowing for more efficient design and construction. They are particularly valuable in situations where lightweight and high-strength solutions are needed, making them a common choice in both residential and commercial construction.

The other options describe different structural components or functions that do not accurately capture the role of gusset plates. For instance, vertical members of a truss assembly refer to the main structural components themselves rather than the connectors. Long strips of metal between wood beam members suggest a different type of connector, while structural sheathing focused on shear resistance pertains to materials that are applied to resist bending forces rather than connecting structural members.