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  • Who we are
  • What we do
  • Projects
  • Career
  • Contact
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Operating internationally with Swiss roots, WALO is a family-owned business now being led by the fifth generation. For over 100 years, WALO has been committed to the combination of consistency and innovation.


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


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We have successfully implemented many challenging projects and are proud to let our references speak for our work.


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Good construction and thus satisfied customers require precise 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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With our locations in three countries, we are by your side 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.

walo-us-project-enlargement-of-the-tierfehd-reservoir-01
Contact

Walo Bertschinger AG
Giessenstrasse 5
8953 Dietikon 1

Location
Switzerland
Service
Building time
2010
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We appreciate your interest in the WALO Group and will be happy to answer your questions.

Walo Bertschinger AG

Headquarters
Giessenstrasse 5
Postfach, 8953 Dietikon 1

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