What does the chord in a truss refer to?

In a truss, the term "chord" refers specifically to the top and bottom horizontal members that provide stability and support to the structure. The top chord typically bears the compressive forces, while the bottom chord primarily handles tension forces. This design allows trusses to efficiently distribute loads across a span, making them a popular choice in construction for supporting roofs and bridges. Understanding the role of chords is essential for recognizing how they contribute to the overall strength and stability of truss systems.