Highly elaborate customised formwork can be manufactured much more efficiently by making use of new technologies. This was demonstrated very effectively in a pilot project during the construction of the headquarters of the Sächsische Aufbau-bank (SAB) in Leipzig. In cooperation with voxeljet AG, a supplier of 3D printing systems for industrial use, Doka realised a 3D-printed formwork shell for a fair-faced concrete staircase with unusual geometry.
A semi-spiral staircase with an inter-mediate landing. 40 % of the staircase leans against a wall and the rest is self-supporting. Moreover, the surface of the interior was to be executed in fair-faced concrete.
All the seven formwork sections were planned virtually. Based on this specification, voxeljet manufactured highly accurate high-quality formwork shell sections with a wall thickness of only 21 mm, including drilling and plug connectors for the combination with Doka standard formwork. The result: considerable time savings and a flawless concrete surface.