In the next few years, the Federal Waterways and Shipping Administration (WSV) intends to replace a number of weirs on their waterways. For the movable weirs, a change in the gate system is planned to water-filled rubber gates. The movable weirs on the rivers Neckar, Main and Lahn are already in the planning stage. Three weir spans, each up to 40 m in width, are to be built on the Main river and on the Neckar river. Two weir spans, each between 18 and 25 m, are to be built on the Lahn river. The gate heights vary between 3.50 m and 4.60 m.
For these projects, only water-filled rubber gate systems (combination of membrane and clamping system) may be used which meet the requirements in a prequalification process prior to execution. The construction company is responsible for the selection of a rubber gate system for the project from the listed prequalified rubber gate systems.
Against this background, suppliers of rubber gate systems are requested to participate promptly in a corresponding prequalification procedure for their respective rubber gate systems. (....)