Main drainage renovation (KG 410)

Summary

The tender concerns the main drainage renovation of the Museum of Hamburg History building (Holstenwall 24, Hamburg) as part of KG 410, including the renovation of the on-site drainage system. The contract covers renovating the existing drainage network and gravity main lines and associated manholes and connections, as well as supplying materials and providing documentation for sealing and quality compliance. The works are divided into two construction phases: Phase 1 inside by 28 February 2027 and Phase 2 outside by 29 February 2028; start of individual works can begin from 15 November 2026. The works require coordination with other building services and construction trades, and submission of necessary documents and compliance proofs.