Client:
Public Utilities Board of Singapore
Construction period:
2019 – 2025
City/Country:
Singapore
Contract value:
SGD 188,6 million
Link Sewers for DTSS Phase 2 Project
Singapore
Underground wastewater infrastructure
The Link Sewers for the Deep Tunnel Sewerage System (DTSS) forms part of Singapore’s used water management infrastructure. It is a cost-efficient and sustainable solution tailored to meet Singapore’s long-term needs for used water collection, treatment, reclamation and discharge. The DTSS comprises a 206-kilometre-long underground network that conveys used water entirely gravity-based. Phase 2 consists of 40 kilometres of deep tunnels and 47 kilometres of link sewers joining the network to the “Tuas Water Reclamation Plant”.
Three link sewer contracts with a total length of 14,6 kilometres were completed by ZÜBLIN, representing approximately 31 % of the overall DTSS link sewer scheme. The work required 99 temporary shafts with depths of up to 50,8 metres, 91 permanent manholes and the construction of sewer pipelines.
As a result, Singapore’s long-term water infrastructure has been enhanced as this project contributes to sustainable responsible water management for 100 years.
Scope of Work
- Pipe jacking works for DTSS sewer pipeline installation
- Construction of 99 temporary shafts
- Construction of 91 permanent manholes and flow diversion chambers
- Vortex drop structure
- Underground sewer infrastructure works
