Walo roundabout finisher

Sometimes it’s good to turn in circles

Impressive concrete ceiling finisher paves the way for high traffic

Walo gyrohandler

A Swiss construction company manufactures the first rotary finisher with John Deere drive in order to produce concrete gyroscopes rationally.

Walo Kreiselferiger
The two-lane roundabout in Zug (Switzerland) – an excellent example of fast project execution for concrete work. In just two days, a new and improved roundabout was opened to traffic.

Have you ever tried to get out of a five-lane roundabout when you’re in the inner lane? Surely you had to do one or the other lap of honour. Creating such a roundabout can be just as tedious – especially if you have to apply the asphalt or concrete bushes by hand. For this reason, the Swiss construction company WALO Bertschinger Ltd. invented and built the concrete ceiling prefabricator— a special machine that puts concrete ceilings on without much effort and in one operation.

In Switzerland, concrete rather than asphalt is used for roundabouts, as heavy vehicles passing through the intersection area do not leave any grooves with their rotational movement in concrete. Such a roundabout lasts longer and requires virtually no maintenance. Until 2009, most roundabouts were still created manually – a labor-intensive and time-consuming task.

So that traffic flows.

Then WALO introduced its concrete ceiling prefabricator – a great relief for the ceiling manufacturing industry. The 22-tonne machine can be expanded from 2.5 to 11 metres wide depending on the planned size of the roundabout and is capable of processing concrete layers from 5 to 30 centimetres thick. Thanks to its ability to facilitate and accelerate the ceiling manufacturing process, more than 25 roundabouts have been built in Switzerland since its development with the help of this concrete ceiling finisher.

A current project in Zug (Switzerland) also shows what contribution this unique machine can make where the rapid and easy refurbishment of roundabouts is concerned. On a Friday afternoon, WALO removed the old asphalt ceiling. The next morning, the concrete was poured into the empty circle with the help of a shovel crane. While the crane was still filling the circular surface, WALO’s concrete ceiling prefabricated pulled up and compressed the concrete to create a flat surface. Only three hours later, the entire area was finished, and the whole thing was done in one operation. For the rest of the day and on Sunday, the joints to the adjacent lanes were completed manually. By 4 a.m. on Monday, the roundabout was ready for morning commute.

To protect the environment.

In developing this groundbreaking machine, WALO turned to its usual engine partner, the John Deere engine distributor Hamilton, and inquired about a reliable and environmentally friendly drive. “We chose the John Deere PowerTech Plus 6068H,” says project engineer Heinrich Läuppi. “This motor acts as the main drive and simultaneously drives all hydraulic functions: the gearbox, the servo valve and the axial pump. We can use the machine in the lower range up to 1650 rpm and at the same time keep fuel consumption low,” Läuppi continued. Roundabouts have a reputation for being safe and efficient traffic management. However, they offer other advantages. As traffic flows more smoothly, there are fewer traffic jams, which in turn reduces fuel consumption and pollutant emissions. WALO complements this perfectly with its environmentally friendly ceiling manufacturing solution.

Exhaust gas level: Tier 3/Stage III A
Engine Models: PowerTech Plus 6068HF485
Displacement: 6.8 liters
Rated power: 149 kW at 2200 rpm
Cylinder: 6
Air system: air/air-charge air cooling Air/Air-charge air cooling
Distributor: Hamilton AG, 8302 Kloten, Switzerland

Nicolas Stirnemann