Patent ID: 7048249

Claim:
A circular formwork comprising at least one formwork element ( 1 ), which has a formwork shell ( 4 ) with an adjustable curvature and which has a reinforcement and at least one support ( 5 ) supporting the formwork shell ( 4 ), the at least one support having a U-shaped, V-shaped, or trapezoidal cross section open towards the supported formwork shell ( 4 ) and fastening flanges ( 6 ) located on ends thereof facing the formwork shell ( 4 ) for connecting to a back side of the formwork shell ( 4 ), and a girder ( 7 ) engaged to the reinforcement and the at least one support ( 5 ) at a distance to the formwork shell ( 4 ), wherein an effective length of the girder ( 7 ) is adjustable for changing the curvature of the formwork shell ( 4 ), and intermediate pieces ( 9 ) located between the fastening flanges ( 6 ) of the support ( 5 ) and the formwork shell ( 4 ) and the fastening flanges ( 6 ) of the support ( 5 ) are fixed to the intermediate pieces so as to be pivotable or tiltable about a longitudinal direction of the intermediate pieces.