What is the term for the main structural members of a truss?

The term for the main structural members of a truss is referred to as the chord. In the context of trusses, the chord consists of the top and bottom members, which are essential in carrying the loads applied to the structure. The top chord typically experiences compressive forces, whereas the bottom chord is subjected to tensile forces.

Understanding the role of the chord is crucial in structural engineering, as it contributes significantly to the overall stability and strength of the truss system. The design and material selection for the chords are vital to ensure they can support the intended loads while maintaining structural integrity.

The other terms mentioned in the options refer to different components or types of structural elements. For instance, the web comprises the diagonal and vertical members of the truss that connect the chords and help to distribute loads throughout the structure. Beams and joists are also structural elements, but they serve different functions in construction compared to the primary roles of the chords within a truss system.