In a Belgian truss, how are the web members oriented?

In a Belgian truss, the web members are typically oriented in an inclined position. This design allows for an efficient load distribution by creating a triangular arrangement that optimizes the structural stability of the truss. The inclined web members help support the load from the top chords to the bottom chords, effectively transferring forces throughout the structure.

This configuration also aids in enhancing the truss's overall stiffness and reduces the risk of buckling, which can be a concern with vertical or horizontal web members. By utilizing inclined members, the Belgian truss provides the necessary triangulation that reduces weight while maintaining strength, making it an effective choice in truss design.

Other orientations, such as vertical or horizontal members alone, would not provide the same efficiency and load distribution characteristics that the inclined members offer, resulting in a less effective structural solution.