Drainage channel work

This tender concerns drainage channel works, specifically focusing on the excavation and installation of pipes for a sewage system. The scope of work includes excavating trenches according to DIN 18300 standards, with provisions for side-casting of excavated material and maintaining a protective strip adjacent to the excavation. A protective layer must be left in place as per DIN 18300, section 3.10.3, and removed only immediately before pipe installation. The contractor is responsible for ensuring the evenness and gradient of the trench base. Prior to commencing work, the contractor must consult the latest cable and pipe route plans provided by the site management to prevent damage to existing utilities. Any exposed cables or pipes must be secured appropriately. Following pipe laying and approval, the trenches are to be backfilled in layers of no more than 50 cm using suitable excavated material, ensuring proper compaction. The pipe trenches are intended for the installation of KG pipes, requiring a minimum earth cover of 0.80 m and a clear base width as per DIN EN 1610. This includes excavating sufficient width for connections, junctions, and manholes as per drawings, and removing any stone obstructions up to 60 cm in diameter. The soil classes for backfilling within the pipe trenches are specified as Layer 1: Backfill - Homogeneous Area A, and Layer 2: Loess soils - Homogeneous Area B, according to the provided soil report. Trench construction must adhere to accident prevention regulations and DIN 18303. After pipe installation, the pipe zone (bedding 0.10 m / cover 0.30 m) must be backfilled and compacted with fine sand according to DIN 18300. The compaction must achieve a minimum deformation modulus EV2 of 60 MN/m² for the specified soil class, verified by tests such as a Künzel probe or plate load test. The exact locations for these measurements will be determined by the project planner and the client. The required compaction degree is at least Dpr 97%. Potential additional costs for necessary...

This is a works contract in the construction and civil works and water and sanitation sectors, with a focus on Roads, Wastewater and Drainage. Located in Germany, Europe, this opportunity is open to firms and consortiums.

Published through TED - Tenders Electronic Daily (EU), a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for civil works in the construction and civil works sector. Works contracts of this nature generally require demonstrated experience in similar infrastructure projects, adequate equipment and technical personnel, and financial capacity including bank guarantees. This contract has already been awarded. The information is published for transparency and market intelligence purposes.