Topping-out ceremony for the Green Depot in Mannheim

December 2025

Another milestone has been reached: the shell and roof structure of the Green Depot in Mannheim have been completed. After construction began in the summer, the topping-out ceremony was celebrated at the beginning of December. Where a year ago, before the ground-breaking ceremony, there was still an excavation pit on the three-hectare site, today the individual buildings of the new ensemble on the Spinelli site are clearly visible: in addition to the four-storey administration building and the three workshops, garages, parking areas and washing halls are being built on behalf of GBG Sonderimmobilien GmbH.

The reason why the new depot is described as green became clear at the topping-out ceremony: not only is it already clear where the green roofs and the resulting accessible meadows will be located, but the hybrid timber construction was also particularly evident in the completed shell and roof structure. The administration building, for example, consists of wood-concrete composite ceiling elements, timber-framed exterior walls with pre-assembled window elements, and supports and beams made of construction beech.

Many thanks to everyone involved in the project!