The subject of the current examination is the determination of the current prestressing forces within the twelve steel bars as a part of the trussed roof frame construction of the Saarlouis fire station.
The examination was triggered by the failure of one of the stays (at the respective trussed roof frame an unusual deformation had been detected). This led to the question regarding the distribution of the tension forces within the remaining group of eleven components.
On the basis of a non-destructive, dynamic measurement the actual prestressing level in the stays was determined. Thus, a relevant basis for the assessment and evaluation of the current situation and the further procedure was created.
Under the arch concerned an emergency support was erected immediately after damage detection and detailed expert investigations, which are still in progress, were introduced. The fire brigade remained ready for operation without any interruption.