What is the primary purpose of diagonal bracing in structural engineering?

The primary purpose of diagonal bracing in structural engineering is to prevent racking, which is the deformation of a structure caused by lateral forces such as wind or seismic activity. Diagonal braces are installed between vertical and horizontal members of a structure, creating triangular shapes that effectively distribute these forces. This configuration enhances the stability of the structure, ensuring that it maintains its shape and integrity under stress. By resisting lateral movement, diagonal bracing plays a critical role in maintaining the structural performance, minimizing the risk of collapse or failure during adverse conditions.

Other aspects, such as reducing weight, increasing aesthetic value, or enhancing insulation, are not the main roles of diagonal bracing. While these might be considerations in a broader design context, they do not capture the primary engineering objective of maintaining structural stability and integrity.