In the beginning, the ring beam was designed to be reinforced by a fiberglass-reinforced polymer (FRP). Due to the curved shape of the building, some curved parts were required for which no license was available yet. As an alternative, conventional steel reinforcement was used. These steel rods as well as some steel trusses were properly demagnetized by the Building Biology Consultants IBN Bernd Kinze and Jürgen Teuchert. As a result, the distortion of the Earth’s magnetic field could be reduced by more than 90%. The demagnetization procedure on site took about 10 hours, including the magnetic field measurements before and after.
The demagnetization equipment, which weighs more than 80 kg (176 lb), must generate very high magnetic fields and therefore must be operated at several meters distance to humans and animals. In the video, this equipment is placed in the tub that is held by the crane and moved by remote control.