A task that is expected to take several more decades is the restoration of the flying buttresses of Cologne Cathedral.

The restoration is necessary because the sandstone shows significant signs of weathering in some areas, and there is an urgent need for action, especially in structurally sensitive zones. As part of this restoration work, and to secure the nave and transept areas, a monitoring system with automatic data acquisition and evaluation is planned.

During the restoration of the flying buttresses, a Parafil cable will be installed as a bracing element. This cable will run across the nave and be securely anchored to the structure at both ends.

Construction Project: Cologne Cathedral
Start of Construction: 2025
Client: Cologne Cathedral Workshop (Kölner Dombauhütte)
Special Features: Monitoring of a temporary tension cable and distances in the flying buttress arch
GLÖTZL Measuring Technology: Anchor force sensors, MCC measuring system, laser distance sensor, SDC data management