The Walting Wind Park: Tendons for Renewable Energy
Recently, the new Walting Wind Park was built in Eichstaett near Ingolstadt, Germany. The residents in this area can take shares in this special Citizen Wind Project.
The project consists of 3 wind towers with hub heights of 139m and total heights of 199m. The towers are equipped with General Electric Type G 04 wind turbines and have rotor diameters of 120m. The nominal capacity of the 3 towers is 2.78MW per tower per year.
The wind towers are hybrid towers consisting of concrete and steel. The lower portions of the towers are concrete half shells to a height of approx. 80m. After erecting the concrete elements, the segments were post-tensioned using external Wire EX Tendons that ensure the stability of the towers when subject to dynamic loads.
60 Type EX-69 Wire EX Tendons in lengths of 76m and with a total weight of approx. 96t were installed inside the 3 towers. The installation of the tendons was carried out by tailor-made DSI uncoiling devices from the top down using a crane.
The new wind park will generate approximately 16 million kilowatt hours of electricity per year, which roughly equals savings of 1.6 million liters of fuel oil.