Underground constructions can be of temporary or permanent nature. Which function the steel structure needs to fulfil, depends on your project. Our sheet pile, and strutting systems can retain soil and water temporarily in building pits and cofferdams.

Sheet piles and combined walls are exceptionally suitable for permanent application in for example underground car parks and basements. Here, the steel products are incorporated into the structural design of the construction. The fact that steel sheet piles can be driven tight against the boundaries of the site, and that the wall itself has minimum thickness, means that the surface area available for use is maximised.

We offer steel products for the following underground construction projects:

Building pits

Building pits are temporary waterproof constructions in which an excavation is executed for the realisation of an underground building structure. When enough space is available, a pit can be dug under a natural slope.

However, usually, this extra space is not available as roads, railways, or other buildings are situated along the edges of the excavation. In this case, sheet piles can be applied as an earth-retaining structure.

The function of this construction is not only to retain ground, but it also to keep the building site waterproof.

In combination with the delivery of sheet piles, we provide complete solutions to ensure the stability of the building pit. Our stock tubes and beams are ideally suited to be used as struts and walings.

Underground car parks

Underground car parks are a solution to limited parking space in highly urbanised areas. However, underground construction has numerous design and construction challenges that normal structures above ground level do not have.

That is why building underground is so costly and only considered when all other options are exhausted. ArcelorMittal is changing the economics of conventional underground construction by utilising steel sheet piling as the permanent foundation wall.

This innovative use of sheet piles eliminates the need to construct a permanent wall within a shored excavation, thereby greatly reducing the construction schedule. The reduced schedule equates to significant project savings and a greater return on investment.

Check out our brochures to learn more!


  • Cellular cofferdams brochure

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  • Underground car park brochure

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  • Underground car park- guide book Netherlands

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  • Underground car parks-Technical & Cost Analysis

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