Flood protection Zlam River - widening Pötschen River

Description of project

As part of the flood safety project „Pötschen River” of the Torrent and Avalanche Protection of Upper Austria several new constructions had to be executed in Bad Goisern, for which we did the structural calculations. Three frame bridges (openings facing downwards) had to be built with ranges between 4.10 m and 2.60 m as well as widths between 9.00 m and 4.00 m for house and company driveways. Due to the confined space along the access roads the river runs through a ferroconcrete trough over 30 m, 2.20 m deep and 2.50 m wide.

A new filter construction was situated at the transition from woods to settlement area including an appropriate containment volume. The flood barrage shows a crown length of 31 m and a height of 7.50 m above foundation.

We were commissioned with the structural analysis for the following parts:

• Filter construction with deep-seated foundation resp. new planning of surface foundation during execution due to new insights regarding the subsoil
• Trough
• Bridges I and III (driveways to houses)
• Bridge II (driveway to company building)

Description of tasks

• In-situ bridge inspection according to current regulations including measurements
• Draft of bridge inspection plans, damage plans and inspection report
• Structural recalculations

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