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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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Tierfehd Reservoir, Switzerland

WALO worked on expanding the pumped storage hydro power station at Glarus by providing a second equalizing reservoir to the north of the current one. Find out how this was achieved while meeting special requirements.

Case Study Description

The pumped storage hydro power station at Glarus had to be expanded. One element of the project involved enlarging the capacity of the equalizing reservoir in the valley.

To achieve this, WALO worked on providing a second equalizing reservoir to the north of the current one. A channel linking them allows water to move between the two so their levels correspond.

The existing terrain forms the east side of the reservoir while a dam was built on the west side of the new reservoir. The crest of the dam is 813 meters above sea level while the base of the reservoir is 11 meters lower. The new reservoir is located within a groundwater protection zone which means the work had to meet a number of special requirements.

Once the proﬁle of the new had been prepared by the excavation contractor, it was covered with a layer of filter ballast. A binding layer was then applied followed by a sealing layer and a coating of mastic which protects the reservoir lining against the elements and UV radiation. An asphalted road on the crest of the dam was also built to allow access for operators and maintenance staff during the service life of the facility.