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J. Kollegger, M. Schönweger:
"A method for producing a tower construction from reinforced concrete";
Patent: USA, No. US9657494; submitted: 2015-04-27, granted: 2017-05-23.

The invention relates to a method for producing a tower construction (1) from reinforced concrete. A tower has at least one cavity (35) that extends in the longitudinal direction within the tower. Double-wall elements (2) are arranged along a periphery of the tower, each comprising an external plate (3) as well as an internal plate (4) in vertical or inclined position, forming vertical external joints (5) as well as vertical internal joints (6) between the external plates (3) and the internal plates (4). A reinforcement (9) is installed in the area of the vertical external joints (5) in-between the external plates (3) as well as the vertical internal joints (6) in-between the internal plates (4). The vertical external joints (5) and the vertical internal joints (6) in-between the double-wall elements (2) are closed and the double-wall elements (2) are filled with concrete (23).