Roof of a swimming hall, Marseille, France

Before a new roof of this swimming hall could be constructed, the old roof had to be removed. Traditional in-situ demolishing would have incurred very high scaffolding costs and long roofraising times. The DYWIDAG alternative to this method was to disconnect the roof from its supporting columns and move it in seven-meter long sections. Once the butt end of the building had been cleared, the roof was demolished. That proved to be by far the quickest and most cost-effective solution.