• Anil Verma Associates, Inc.

    Regional Connector Transit Corridor

    Los Angeles, California, United States

Project Summary

Project

To address some of the worst traffic congestion in the world, Los Angeles County Metropolitan Transportation Authority implemented the USD 1.7 billion Regional Connector Transit Corridor (RCTC) project. Designed by Anil Verma Associates (AVA), the new light rail system in downtown Los Angeles, California will add 17,700 daily riders by tying together existing rail lines and adding three new underground metro stations. AVA faced major challenges with the large, complex project, as the design had to be integrated into a high-density corridor filled with large buildings and extensive existing infrastructure. The design-build team did not use the same software to deliver their work. As a result, a common technology platform was imperative.

Solution

AVA chose Bentley’s geotechnical analysis applications for its multidiscipline solutions, which helped determine where existing utilities could be moved and how the design could work around the dense network of building foundations, including the sprawling foundation of the over-80-year-old Los Angeles Times building. The analysis sent real time settlement data, tied into the city’s GPS system for data, such as gINT borehole reports, from the excavations to the project office to enable swift data-driven decision-making. Using BIM applications, the design team created detailed 3D models of each station, including complex mazes of equipment rooms necessary for operations and various “appendages” leading to the surface, such as entrances and air vents. The organization established a connected data environment to coordinate hundreds of contributors and save an estimated USD 5 million to USD 6 million, compared to using older methods.

Outcome

AVA redesigned the initial proposals for each station and reduced their footprints by 20% each, lowering construction and excavation costs by USD 3 million to USD 15 million per station. The design team utilized detailed 2D and 3D geotechnical analysis to keep excavation walls stable and avoid soil movements. AVA’s traffic analysis during the environmental phase of design lessened traffic disruption during construction in a highly congested area. The design team created detailed 3D models of each station, including 3D-printed models, which inspired more cost-effective designs and improved communication with contractors and stakeholders. Linking Bentley’s geotechnical information management through the city’s GPS offered more-informed decision-making through improved data and information management. Project construction is on schedule to be completed in April 2022.

Software

AVA carried out geotechnical analysis with PLAXIS, and gINT was used to manage bore hole logs. OpenBuildings Designer helped optimize station footprints during the bid and early design phases. MicroStation modeled caverns excavated for the stations, standardizing third-party data generated by contributors. Navigator identified clashes during design and construction. SYNCHRO helped the design team optimize construction schedules and minimize vehicular traffic disruption. During the entire process, ProjectWise provided an open, connected data environment to coordinate over 400 contractors, consultants, and stakeholders.

Project Playbook: gINT, MicroStation, OpenBuildings, PLAXIS, ProjectWise

Outcome/Facts
  • To help address some of the worst traffic congestion in the world, Anil Verma Associates designed the new light rail system in downtown Los Angeles, California.
  • The design team utilized detailed geotechnical analysis using PLAXIS and gINT to keep excavation walls stable and avoid soil movements.
  • OpenBuildings’ 3D visualizations of proposed station designs helped reduce station footprints by 20%, saving construction time and USD 3 million to USD 15 million per station.
Quote:
  • “This regional connector project is uniquely complex with multiple technical and public interfaces. Tracking and resolving issues is a Herculean task. Bentley’s ProjectWise coordinated millions of documents, totaling close to three terabytes of data to give more than 400 users the necessary, real-time controlled information for confident judgement and accurate action.”

    Anil Verma President Anil Verma Associates, Inc.