1250-20 Advanced Special Foundation Engineering Tender - 140915464

Procurement Summary

Country: Germany

Summary: 1250-20 Advanced Special Foundation Engineering Work - Combined Structure

Deadline: 08 Jun 2026

Posting Date: 08 May 2026

Other Information

Notice Type: Tender

TOT Ref.No.: 140915464

Document Ref. No.: 317721-2026

Competition: ICB

Financier: Self Financed

Purchaser Ownership: Public

Tender Value: Refer Document

CPV Classification

45221000 - Construction work for bridges and tunnels, shafts and subways
45262310 - Reinforced-concrete work
45247110 - Canal construction

Purchaser's Detail

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Tender Details

1250-20 Advanced special foundation engineering work - combined structure Construction of a watertight excavation pit as well as shaft structures No. 14, No. 15 and a pipe route on the sewage treatment plant site; associated special foundation engineering and expansion work. 1. Special civil engineering and shoring • Sheet pile wall shoring for combined construction pits, shaft No. 5 and pipe route; Low-vibration installation due to neighboring systems and nature conservation. •Back anchoring and strapping (particularly in the area of ​​the old secondary clarifier No. 5). •HDI body (jet jet process) for sealing sheet pile ends, existing shaft connections and inlets/outlets; HDI base sealing for shaft No. 15. 2. Construction pit construction and sealing •Underwater concrete soles as base sealing within the sheet pile wall shoring (Combined structure, shaft no. 5, pipe route). •Gravel layer on the underwater concrete floors; Pump sumps in the underwater concrete floors for day and residual water retention. •Underwater excavation from groundwater level to foundation levels. 3. Founding and Buoyancy safeguards •Micropiles for buoyancy control for shafts No. 5, No. 14 and No. 15. •Excavation to anchor level; Production of drivable base layers and separate ramps for anchor drilling rigs. 4. Earthworks, demolition and excavation •Topsoil removal, Pre-excavation and construction of construction roads for sheet pile wall installation. •Demolition of old foundations (e.g. secondary clarifier No. 5), trickling filter remains, out-of-service pipelines, cable routes and shaft structures; Exposure and disposal. •Between...
Document Type: Contract Notice Reference Number: 68-0561-26 Contract Type: works Authority Type: la Doc Title: 1250-20 Vorgezogene Spezialtiefbauarbeiten - Kombibauwerk Dispatch Date: 2026-05-06 Publish Date: 2026-05-08 Submission Date: 2026-06-08

Documents

 Tender Notice