• Sale03-QD steel building

A “sag rod” in structural steel detailing typically refers to a tension member used to resist sagging or deflection in structural elements, such as roof trusses or purlins. Sag rods are employed to counteract gravitational forces, preventing excessive downward deflection in horizontal members subjected to loads like dead loads and live loads. These rods are placed in tension, pulling against the sagging effect and providing additional support to maintain the structural integrity of the overall system.

Key points about sag rods:
Function:
They are designed to resist sagging by applying tension, pulling against the downward deflection caused by weight on the horizontal member.

Application:
Commonly used in steel roof structures, particularly in situations where long, slender purlins are present.

Installation:
Sag rods are typically installed by passing them through holes in the web of the purlin or truss, with their ends secured using nuts and bolts.

Material:
Usually made from high-strength steel, often galvanized for corrosion resistance.