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Case Study published: Reinforcement of Pyramiden, Sweden

The neighborhood ”Pyramiden” in central Stockholm was sinking – to rescue the houses Wassara’s technology turned out to be the best.


Old buildings in central Stockholm often have a foundation made of thick wooden piles. As the water table lowers, the wooden piles get in contact with air and begin to decay, resulting in a reduced loadbearing capability.

The contractor choose to test Wassara’s DTH-hammer since they knew that it would improve the working environment and reduce the risk of descend of the ground level in an area connected to limestone walls.

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The case study as PDF