Starting situation

During the soccer world championship 2006 an advertising banner approximately of the size 27m·44m was attached to the gasholder Gaisburg in Stuttgart. The banner was supported by vertical and horizontal tensioning ropes which were attached at the stanchions of the gasholder. To avoid fluttering the ropes were prestressed.

What we did

The additional stresses of the gasholder due to the advertising banner were superimposed with the stresses of the uncovered shell. To ensure a consistent design concept we calculated the stresses of the uncovered shell according to the evaluation procedure typically used at the time of the gasholders erection. For the period of advertising reduced wind loads were assumed and it was to be ensured that the banner had to be removed before reaching this wind load. Comparing the stresses of the uncovered shell for the full wind loads with the stresses of the covered gasholder for the reduced wind loads we could certify the innocuousness of the advertising task.