Alsina executes a mining tunnel with its formwork

Outstanding Projects · Transportation

Alsina executes a mining tunnel with its formwork

The project: UTE Benta Berri railway (Spain)

The Benta Berri station will be a railway station located in the old neighborhood of San Sebastián. It will provide service to the lines of the operator Euskotren Trena and the opening is scheduled in 2022.

It is a section of the and about 100 linear meters of line. The type of jobsite required a conventional mine tunnel car, but Alsina took on the challenge of implement the mining tunnel with standard rental equipment, a much cheaper solution but much more complex when it comes to finding a solution with the perfect mix between standard equipment and some special parts.

Alsina: safe and profitable solutions for the construction of residential facilities

In addition to some special custom-designed pieces, Alsina has used its One Side Wall, Multiform, Alisply Circular and AR-80 Shoring Systems for the shoring and formwork of the different sections of the project.

Circular Alisply Vaults system allows the perfect adaptation to the geometry of the vault with a 2.5 m radius. This system of circular walls adapted to form vaults is resistant, versatile and compatible with the MultiForm family, which allows equipment’s high profitability at the job site. Alisply system has a phenolic surface, so it offers multiple advantages over metallic surfaces, such as lower weight, higher quality of concrete, increased performance and greater resistance to inclement weather.

On the other hand, Alsina AR-80 shoring system is a very versatile and easy to assemble reliable support system for slab formwork implementation, consisting of vertical support elements and a system of multidirectional connections that allows providing support for both independent towers and fixed scaffolding, depending on application requirements, and annex auxiliary elements such as access stairs or safety platforms to it. This is a really strong multidirectional system, with a bearing capacity of 17.984 lbf per support, which allows shoring any structural element in civil engineering projects.

Finally, Alsina’s Multiform system, consisting of double UPN metal beams, wooden beams, strips and turnbuckles is one of Alsina’s most versatile systems, allowing “ad hoc” design of the necessary recoverable formwork to adapt to any geometry whether they are straight, curved or one sided walls, lintels or bridge

Location:  Basque Country (Spain)
Completion date: 2020