Bundesanstalt F R Wasserbau Baw Tender

Tenders are invited for Construction of a large-scale concrete sediment transport model on the premises of the BAW, Hall V Construction of a large surface model (curvature model) in Hall V of the BAW site in Karlsruhe. A floor space of approx. 780 m? is available for this. The area model is to be set up in the area between the ?Blue Channel Model? and the ?Green Channel Model?. A map of the planned model with its location in Hall V can be found in Annex 11 of the tender documents. The planned area model has the following characteristics: ? Length: approx. 60 m, width: approx. 12.50 m. This results in an area of??approx. 750 m? ? The model consists of an inlet and outlet area, a sequence of 3 counter-rotating arcs, areas with foreland between the bends ? River width (from bank to bank): 3.20 m ? Arc angle: 90 ? each ? Foreland widths : 1.10 m to 7.25 m ? Bottom slope IS = 0.3 ? (constant) ? Connection of a side channel in the central arc on the right side of the model The model shell mainly contains modeling of the foreland with the help of sheet metal profiles (see tender documents, annex 9-13). For investigations, a large-scale surface model is to be created as a bed load transport model with a movable bed in test hall V of the BAW at the Karlsruhe location. The planned model (curvature model) should not depict a specific curvature, but rather represent a suitable abstraction that is based on hydraulic-morphodynamic parameters of various inland waterways and can therefore be transferred to as many different curvatures as possible. The model investigations create an interface between practice-oriented basic research and WSV advice and contribute significantly to the improvement of river engineering advice in river sections characterized by bends. The aim of the tender is the construction of a concrete hydraulic-morphological laboratory model in Hall V of the BAW at the Karlsruhe location