Design services for modernising the ventilation system of the Tiergarten Spreebogen Tunnel

Summary

The tender concerns planning services for the complete modernisation of the ventilation system in the Tiergarten Spreebogen Tunnel. The work includes preparing a ventilation assessment under the applicable regulations, designing and dimensioning the system, replacing and redesigning all 74 jet fans, replacing and planning the electrical ventilation control systems, assessing whether the medium-voltage system can be reused or must be rebuilt, coordinating with Berlin Fire and Rescue regarding fire compartments, integrating the control system and ensuring full functionality, particularly at the automation level. The deadline for tenders is 7 September 2026. Precise exclusion, qualification and compliance requirements must be checked in the official tender documents.