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Close-up of the foot of a galvanized steel sign post fitted into the top of a headless T-Block ground screw, flush with the grassy ground.

Case study · Infrastructure

Road signs and roadside warning panels, without opening up a work site

In Città di Castello the weather-warning panels were installed at the roadside while cars kept driving past: no digging in the verge, no concrete to wait for, and the ground as it was when the work was done.

A sign post looks structurally trivial, and it is not: it takes wind on the panel, it takes traffic vibration, and it stands up only thanks to what is underneath. Until now standard practice was a concrete footing, which means digging at the edge of the carriageway; today that footing can be a T-Block ground screw, screwed in with no digging and no pouring.

Here the panels are warning signs — yellow, orange and red alert — on a road open to traffic on the outskirts of Città di Castello. The digging has to be done in the roadside strip, the site shares space with the cars, and in February the ground is what it is.

The digging is the problem, not the foundation

At the roadside, digging is the costly and risky part: it opens up the verge, requires signage and lane restrictions, and means running into whatever runs underneath. Then comes pouring, waiting for the concrete to cure and finally reinstating.

With screw installation there is no digging. The machine drives the screw at the planned point and the ground around it stays closed: no spoil to take away, no reinstatement to do afterwards.

Grassy strip beside a roundabout with a few T-Block ground screws lying between traffic cones, and a mini excavator with a hydraulic drive head in the background.
Before installation: the screws on the ground and the mini excavator with its drive head. All the equipment needed fits into a strip a few metres wide.

Small equipment, small footprint

Installation was done with a mini excavator and hydraulic drive head: a machine that fits in the grass strip without encroaching on the carriageway and without needing a storage area for aggregates and concrete.

Each point is independent of the others, so the work proceeds post by post and the road stays open the whole time.

Roadside sign gantry with «Allerta arancio / Orange alert» and «Allerta gialla / Yellow alert» panels and a two-light signal, with the hydraulic drive head beside it.
The finished gantry: the warning panels are at height and the ground around them was never opened.

What remains visible

Once installed, all you see of the foundation system is the head: the foot of the post fitted into the connection, flush with the ground. No concrete collar sticking out, nothing to finish off.

If a post has to be moved — for a traffic change, a widening, a reshaped roundabout — it is unscrewed and repositioned. It is the same reason this solution works well on temporary signage sites.

T-Block ground screws and connection parts lying on the grass at the roadside, ready to install, next to a traffic cone.
The components before installation: the screw, the connection and the post. No formwork, no reinforcement cage.

Why this case matters

Vertical signage, gantries, variable message signs and billboards come in large numbers with thin margins: what decides the cost is not the post, it is the work site around it. Removing the digging and the concrete changes the scale of the job, not a detail.

Do you have a project with the same constraints?

Send us the project, the type of ground and the loads: we reply with the anchoring layout and the right T-Block® models. If your case is like one of these, we will tell you — and if it is not, we will tell you that too.