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Schweiz
USA
UK

Who we are
What we do
Projects
Products
Career
Contact

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Who we are

Anchored in Switzerland and internationally active, WALO is managed as a family business in the 4th and 5th generation. For over 100 years, WALO has focused on the combination of consistency and innovation.

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What we do

WALO is active as an innovative total solutions company in all markets of the construction industry. The family-owned company has established itself as a reliable partner in the construction industry and infrastructure projects in Switzerland and worldwide with its decades of experience and the permanent development of sustainable as well as economical solutions.

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Projects

We have successfully implemented many challenging projects. Therefore, we proudly let our references speak for our work.

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Products

Whether residential, industrial, healthcare, outdoor or for sports and leisure facilities - seamless floor coverings have to meet a wide variety of requirements on a permanent basis.

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Career

Good buildings and thus satisfied customers require precise construction work. All our employees, from unskilled workers to engineers, play a key role in ensuring that we achieve this goal time and time again.

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Locations

With our locations in three countries, we are successfully active for you worldwide.

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Rifa Reservoir, Austria

WALO's innovative approach to increasing reservoir storage volume while maintaining normal power plant operation is highlighted in our latest case study. Learn how we achieved this massive capacity enlargement program in a sustainable and cost-effective way.

Case Study Description

As part of a capacity enlargement program for a whole chain of power plants, the storage volume of the Rifa reservoir needed to be increased from 670,000 m3 to 1,100,000m3.

In order to increase the storage volume of the reservoir so dramatically, the existing earth darn needed to be lifted by five meters and the asphalt slopes had to be extended by twelve meters. All WALO’s work had to be undertaken during the normal operation of the power plant, which was achieved by reducing the water level in the reservoir and then working on the slopes above it.

To ensure that the connection between the existing liner and the new extension lining was impermeable and durable, the existing dense asphalt course was milled along its upper edge to form a strong key between the linings. The drainage gravel, the Asphaltic Binder Layer (ABL) and the Dense Asphaltic Concrete (DAC) were installed by paver and the joint between them and the existing asphaltic lining was formed in a conventional manner, ensuring a homogeneous lining system. Further stages of the modernization included the construction of additional inlet/outlet structures and a further, second extension was created by building a wave-breaker around the crest.