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  • Who we are
  • What we do
  • Projects
  • Career
  • Contact
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Who we are

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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What we do

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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Projects

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


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Career

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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Zarnowiec Power Plant, Poland

WALO successfully rehabilitated the surface of the largest pump storage scheme in Poland, ensuring electric supply in peak times and stabilization of voltage. A complex composite lining system was created by their Zurich laboratory to resist harsh conditions.

Case Study Description

"The powerplant of Zarnowiec is the largest pump storage scheme in Poland and is responsible for ensuring the electric supply in peak times and the stabilization of the voltage in the polish electrical power system. The permanent load changes during operation and the extreme differences in temperature have imposed a severe stress to the reservoir lining.

 

WALO was commissioned to completely rehabilitate the surface of the lining on the steep sided slopes which have an inclination ranging from 1:2.75 up to 1:2. After removing the surface of the upper sealing layer and refitting the damaged zones, WALO fitted a new Dense Asphaltic Layer (DAC) followed with an application of new mastic coating. A mixing plant was installed close to the site for the production of the bituminous mixes. WALO managed all the logistics associated with the mixing plant.

 

 WALO constructed the cells as part of a composite lining system of some 17,800m2 using DAC formulated in the company’s Zurich laboratory to a design mix unique to the project. The lining system comprised a 300mm mineral attenuation layer; 200mm sub-base material layer; 60mm asphaltic binder layer, 80mm dense asphaltic concrete layer and a mastic seal coat to the base, side slopes and bund areas. The works involved the placing of asphalt by paver and winch on a 40m slope. Once the lining was completed, a 300mm thick layer of leachate drainage stone was applied to the whole area."

Contact

Walo Bertschinger AG
Giessenstrasse 5
8953 Dietikon 1

Location
Poland
Service
Building time
2006
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We appreciate your interest in the WALO Group and will be happy to answer any questions you may have.

Walo Bertschinger AG

Headquarters
Giessenstrasse 5
Postfach, 8953 Dietikon 1

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