Roof Truss Tension Rods

Finally the truss calculator will compute the best dimensional method to connect the pieces of the truss with steel joints and a bridge.

Roof truss tension rods.

Oct 29 2015 this project involves tied rafter trusses tie rod trusses multiple angle steel tie rod truss connections wood and steel truss system fin plate and pin connections and hinge and pin connections. The more complex the truss framework is the greater quantity of these joints will be required. Steel tension rods can carry in excess of 35 000 pounds of tension in large timber trusses. The main feature of this repair was the installation of post tensioned steel rods designed to relieve the truss bottom chords of overstress due to code prescribed snow loads.

These steel joints are needed to support the overall truss. Trusses having a more contemporary appearance may utilize steel tie rods for some members. The trusses are tensioned between the concrete floor slab and the steel roof structure. The same thing is true for the bridge of the truss.

Our in house deep hole drilling capability allows atm to incorporate this technology into its truss design and fabrication. Steel tension rod connection. The tension members in the web of the truss are 1 25 inch 3 2 cm diameter wrought iron rods. The axially connected truss utilizes hidden steel rods to provide tension sufficient to allow greater open spans.

That load needs to be transferred from the rod to the timber truss. Custom fabricated steel brackets were installed at the heel joints to transfer the top chord loads into the new steel tension rods. A boot is attached to the timber tie with bolts and shear plates transferring the load. The detail on the left shows ones solution.

Swc can source these rods in a variety of diameters lengths and materials along with appropriately sized clevises to create a clean pinned connection to attachment points.