• CH2M

    Changi WRP Erweiterung Phase 2




One of the world’s largest and most advanced reclamation facilities, Changi Water Reclamation Plant (CWRP) is located at the eastern end of Singapore and is capable of treating 920 million liters per day (MLD) of used water. To help meet future demand for used water treatment, the Public Utilities Board Singapore initiated a SGD 400 million expansion project that will increase the plant’s capacity by 200 MLD and provide a new wet weather facility to handle peak flow management. CH2M was retained to provide multi-discipline engineering services from detailed facility design through construction supervision and commissioning. To deliver the advanced expansion plan within a small footprint, on time and within budget, CH2M needed to implement a collaborative BIM strategy.


CH2M used AECOsim Building Designer as a multi-platform design application for analysis, providing information-rich deliverables, along with other Bentley applications for modeling and project coordination. Working in a collaborative environment accelerated information mobility among the multi-discipline team allowing for seamless integration of project data and models regardless of file format. Using Bentley Navigator facilitated a more effective design review process while merging the model with the project schedule in ConstructSim provided the team clear visualization of sequencing to meet construction deadlines. 


Bentley’s BIM advancements provided a connected data environment, streamlining workflows among the project team to save time and reduce project costs. The seamless integration of AECOsim Building Designer and STAAD.Pro reduced time spent on structural analysis, increased the team’s efficiency, and eliminated design errors. The ability to use the BIM model for material takeoffs greatly reduced the time required for estimation of construction costs. Embracing a collaborative BIM strategy optimized information mobility and accelerated design sharing, increasing productivity, ensuring data integrity, and enhancing overall project performance and delivery.


ProjectWise provided the shared platform and a controlled environment to enhance collaboration, maintain design quality, and increase accountability, minimizing risk and avoiding project delays. The automated publishing of i-models using Navigator allowed the various engineering disciplines to complete design reviews earlier in the design process for more coordinated modeling, reducing rework. Using ConstructSim for work packaging processes and modeling facilitated understanding of the construction sequence, enhancing safety and optimizing development of construction milestones. Bentley’s BIM advancements accelerated information mobility and facilitated client engagement for better decision making throughout the design process, enabling the team to deliver a reliable, energy efficient water treatment facility.

Project Playbook: AECOsim Building Designer, ConstructSim, MicroStation, Bentley Navigator, ProjectWise, STAAD.Pro

  • Leveraging Bentley technology enabled CH2M to enhance design efficiencies among a multi-disciplined team, eliminating errors, saving time, and reducing project costs delivering the SGD 400 million water treatment expansion facility.
  • Integrating Bentley design and analysis applications, the team produced high quality models and visualizations that facilitated client engagement and understanding, and allowed ultimate end users to be involved in developing the design from an early stage.
  • The collaborative BIM model accelerated information sharing, improved design integrity, enhanced decision making, and facilitated accurate material takeoffs for increased productivity, effective use of resources, and delivery of a first-class design.
  • Upon completion, the CWRP expansion will improve Singapore’s water security by increasing the supply of safe, treated water.
  • “Bentley’s design applications have been an essential basis for us to deliver a first-class design, giving end users of the facility a key role in the design process.”

    Colin Newbery Design Manager and Principal Engineer CH2M