Renovation of the glass roof of the Bavarian Parliament

At the end of 2021, Waagner Biro steel and glass won the tender to renovate the glass roof over the plenary hall of the Bavarian Parliament in Munich. The construction work will be carried out during ongoing operations. A special false ceiling was therefore installed inside for the duration of the renovation work. To protect the MPs and the Maximilianeum plenary hall and its suspended glass ceiling. A weather protection roof was erected over the galleted roof to be renovated.

After completion of this preparatory work, the dismantling of the existing glass roof including the secondary steel structure began in June. Since July, the primary steel structure remaining on the building has been newly fire-protected and then the new glass roof will be erected. The completion of the renovated glass roof is planned for the end of 2022.

Since all construction work is being carried out during the ongoing operation of the Landtag and in coordination with the other construction lots taking place at the same time, the logistics and coordination with all project participants pose a particular challenge in this project.

The performance tests (PMU) for air tightness, driving rain tightness as well as wind loads, which are usual for a glass roof of such complexity, were successfully completed in May 2022 at the PfB Prüfzentrum für Bauelemente in Stephanskirchen (Germany). In a further series of tests, the residual load-bearing capacity of the panes was also verified using test specimens.

Young engineers from Waagner Biro steel and glass were also involved in all the tests – this is how the steel and glass specialist effectively combines project work and the training of young employees.

Technische Details

The total thickness of the new triple insulating glass package is 69 mm, with a control pane size of 1.4 x 4.8 m. Waagner Biro steel and glass has designed a special sealing system for the Maximilianeum.