Cantilever Scaffold Tie Rod
A scaffold tie rod is the diagonal brace of a flower-basket cantilever scaffold. It runs from the outer end of the cantilever beam up to an anchor on the structure, turning the beam into a stable triangle and carrying part of the platform load back into the building. Lengge builds the adjustable type as one assembly: an upper tie rod with a forward thread, a lower tie rod with a reverse thread, and a closed turnbuckle between them. Turning the turnbuckle draws both rods in at once, so the crew sets length and tension on site without cutting or welding.
Rods are φ20 galvanized steel with M20 threads, and a thread protection sleeve keeps concrete off the adjusting threads so the rod stays reusable. We supply the full assembly or individual parts, matched to your anchor type, factory-direct for high-rise and renovation projects.
| Component | Spec / Role |
|---|---|
| Upper tie rod | φ20 steel, M20 forward thread; connects to the upper anchor |
| Lower tie rod | φ20 steel, M20 reverse thread; connects toward the beam |
| Closed turnbuckle | Forward and reverse threads in one body; tensions and adjusts length |
| Double-ear ring | Joins the rod top to the embedded part at the anchor |
| Thread protection sleeve | Keeps concrete off the adjusting threads during the pour |
| Finish | Hot-dip galvanized |
Rod lengths are set to the cantilever layout. The working angle to the beam stays at 45° or steeper. The anchor end is matched to through-wall, embedded or semi-embedded fixing.
A scaffold tie rod is the diagonal member that braces a flower-basket cantilever scaffold. It runs from the outer end of the cantilever beam up to an anchor point on the structure, turning the beam into a stable triangle. The rod works in tension, carrying part of the platform load back into the building above.
The assembly has three parts. The upper tie rod carries a forward thread and connects to the upper anchor; the lower tie rod carries a reverse thread and connects toward the beam; the closed turnbuckle sits between them with both threads inside. Turning the turnbuckle draws both rods in together, so the rod tightens evenly.
Length and tension are set with the closed turnbuckle. Because it holds forward and reverse threads in one body, a few turns adjust the whole rod on site. The sealed body plus a thread protection sleeve keeps concrete and grout off the threads during the pour, so the rod still turns and can be reused.
Rods are φ20 round steel with M20 threads, hot-dip galvanized against corrosion. That suits the repeated handling and weather exposure of erect-and-strip cycles. We set the rod lengths to your cantilever layout.
Yes. The same adjustable tie rod works whether the top anchors through the wall, fully embedded in the concrete, or semi-embedded. Only the anchor end and the double-ear ring change to match; the turnbuckle assembly stays the same. Tell us your anchoring method and we supply the matching version.
Both. We supply the complete tie rod assembly matched together, or individual parts, upper rods, lower rods, turnbuckles or rings, when you need to restock. Stock parts ship quickly; custom lengths add some production time, which we confirm at order. Parts bundle into containers and pack dense, so freight per ton stays low.
On a flower-basket cantilever scaffold, the tie rod is the part doing the quiet work. The cantilever beam reaches out from the building, and the tie rod pulls its outer end back up to the structure, holding the whole thing as a triangle. This guide covers what the rod does, the three parts that make it adjustable, why it replaced wire rope, and how to match it to your anchoring.
A cantilever beam on its own would sag and rotate at the outer end under load. The tie rod stops that. Fixed at the beam end and anchored higher on the structure, it works in tension and turns the cantilever into a stable braced triangle. The load from the platform travels along the rod into the upper anchor, which is why the rod and its connection have to be sized and set correctly.
The assembly is not one solid bar. It is built so the length can be tuned on site:
Because the two threads run opposite ways, a few turns of the turnbuckle tighten or release the rod evenly, so the crew can set the working tension and bring the rod to the right angle without any cutting.
Older cantilever scaffolds braced the beam with wire rope. It works, but the rope loses a large share of its strength in service, is hard to re-tension, and the embedded anchor loop usually has to be cut off to strip the scaffold, so little comes back for reuse. The adjustable turnbuckle rod was built to fix that:
| Aspect | Wire-rope cantilever tie | Adjustable turnbuckle tie rod |
|---|---|---|
| Adjustment | Fixed length, hard to tension | Turnbuckle tunes length and tension |
| Reuse | High loss, over 30%, low turnover | Reusable across cycles |
| Threads / anchor | Embedded loop cut off to remove | Removable, threads protected |
| Storage | Awkward and degrades | Stacks and stores |
The closed turnbuckle and a thread protection sleeve are the detail that matters here. They keep concrete and grout off the adjusting threads during the pour, so the rod still turns freely afterward and goes onto the next floor. That is what lifts the reuse count well above a wire-rope tie.
The top of the rod has to anchor into the structure, and there are three common ways to do it. The rod end and the double-ear ring change to suit, while the turnbuckle assembly stays the same:
The rod only does its job if it is set right. The key points on site:
Buy the complete assembly from one maker so the upper rod, turnbuckle, lower rod and ring all match on thread and length. For projects already running, individual parts to restock rods, turnbuckles or rings keep the line moving. Confirm the rod lengths against your cantilever layout, the anchor type against your structure, and the finish against the site conditions.
