1250-20 Advanced Special Foundation Engineering Work Tender

• Country: Germany
• Summary: 1250-20 Advanced Special Foundation Engineering Work - Combined Structure
• DET Ref No: 140915464
• Deadline: 08 Jun 2026
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: 317721-2026
• Purchaser's Detail:
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• Description:
• 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...
• Documents:

 Tender Notice