A triumphant premiere

Project: Fish ladder on River Traun

Principal: Energie AG Oberösterreich, Linz

Contractor: GLS Bau und Montage G.M.B.H., Perg

MEVA systems: StarTec wall formwork, EcoAs wall formwork

Engineering and support: MEVA Schalungs-Systeme GmbH, Pfaffstätten, Austria



The focus of MEVA's first collaboration with Austrian company GLS was nature conservation and the construction of two fish passes on the River Traun

In line with the objectives of the European Water Framework Directive, new fish migration facilities are to be built by the end of 2018 at the Traun-Pucking and Marchtrenk hydropower plants operated by Energie AG Oberösterreich. The two major projects feature wall heights between 2.40 and 5.70 m.

Two projects planned this year on the River Traun, some 30 km south-west of Linz, pursue the aim defined in the European Water Framework Directive of once again making rivers passable for fish and other aquatic creatures. "Architecture isn't the main problem with these structures," says Gerhard Wagesreiter from MEVA in Pfaffstätten. "What is particularly interesting is the meandering form of the fish passes alongside the hydropower plants." The 240 to 270 cm wide StarTec units used for the wall formwork are being vertically extended to achieve the necessary heights of up to 5.70 m. Little rearrangement is necessary. "The concrete is placed in so-called slots created by the subsequent hand-setting of our EcoAs formwork," explains Wagesreiter. In some places, custom-built units are used to create the exact shape required. Stefanie Besenbäck, site manager for GLS Bau und Montage GmbH, was very satisfied with this first use of the MEVA systems: "The different unit sizes and straightforward handling save us time and offer flexibility in meeting the many diverse requirements." The works are scheduled for completion by the end of 2018.

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