Prestressing Work in Reconstruction of the Dresden Frauenkirche Cupola, Germany

The reconstruction of the destroyed Frauenkirche in Dresden started in 1993. To take up the circumferential tensile forces acting in the main cupola, the structural design engineers decided to incorporate 6 steel stressing anchors, which, once stressed, apply a low pretension to the sandstone. The cupola of the old church had developed severe cracks, which were to be avoided in the reconstruction. This special task required a specifically designed stressing equipment and a special stressing technology.