Which lumber dimensions are commonly connected by gusset plates in lightweight wooden trusses?

Gusset plates in lightweight wooden trusses are typically used to connect larger dimensional lumber such as 2x3, 2x4, and 2x6. These dimensions are standard for truss applications, providing the necessary strength and stability to handle the loads encountered in various construction scenarios.

Lumber sizes like 2x3 and 2x4 are common choices for the main structural elements in trusses, as they strike a balance between strength and weight. The use of gusset plates allows for efficient load transfer between the members, particularly in applications where space is constrained and lightweight construction is essential.

The dimensional options that consist of 1x lumber or larger dimensions like 3x lumber are less suitable for truss construction. The smaller 1x dimensions typically lack the necessary strength for significant structural applications, while the larger 3x dimensions may be excessive and not commonly used in lightweight truss systems, which prioritize both weight savings and material efficiency. Therefore, the combination of 2x3, 2x4, and 2x6 is ideal for connecting using gusset plates in this particular application.