While working on a project, the structural details of an engineering drawing showed the incorporation of sag rods with purlins and braces.
What is a Sag Rod?
A sag rod is a tension member designed to minimize sagging or deflection by providing tensile support and reinforcement in horizontal structural elements such as roof trusses or purlins. Sag rods are typically fabricated from high-strength steel alloys, such as carbon steel or stainless steel.
How does it work?
Sag rods are positioned between purlins or girts along the length of the structure. Once the sag rods are in place, they are tensioned by tightening the nuts on the threaded ends of the rods until the desired tension is achieved, stabilizing and effectively distributing loads within the structure.
Structures where sag rods are commonly used :
- Roof Structures
- Bridge Construction
- Canopies and Awning Structures
- Seismic Retrofitting
Sources:
Leave a Reply