To free up space in a dense environment, officials decided to move overhead power lines underground. SPAC was tasked with planning the installation of four HVAC 225-kilovolt links, fiber optics, grounding, and supporting equipment within a new 2.8-kilometer tunnel up to 45 meters below the surface. In addition to determining how to install cables and equipment in a deep, confined area, they had to integrate their work with existing infrastructure and connections. To stay on schedule, they sought a BIM methodology.

They discovered that OpenBuildings could help them overcome the project challenges. In addition to modeling the cable system, the open nature of the application helped them incorporate designs made by stakeholders with third-party modeling software. With a federated model, they detected and resolved 53 clashes, defined the construction schedule, and reduced risks to workers. All contributors now have a clear vision of how to best carry out the project.