software + TECH
Channel Sponsor: BQE Software | www.bqe.com
OpenRoads, MXROAD, and SUE used feature definitions to control the look of the models and objects, and their associated data, all of which were imported into MicroStation to facilitate the federated modeling process.
To relieve traffic congestion and unlock growth in the local Dunstable area, Highways England proposed the Northern Dunstable Bypass, linking the A5 trunk road to the M1 motorway via junction 11A, at the eastern end of the link road. This dual, 4.5-kilometer carriageway in- cludes three new junctions, a new roundabout, and seven new bridges. It is the first infrastructure project linking a new junction to an existing smart motorway where variable speed limits and hard shoulder running are used to manage traffic flow. Costain-Carillion Joint Venture (CCJV) was formed to design and construct the transportation system that will improve road safety and travel time by eliminating the need for long-distance travel on the A5 through Dunstable. While the project was not a United Kingdom (UK) “Early Adopter” BIM initiative, the team selected a collaborative BIM approach and digital processes to enhance decision making and realize construction savings. HDBAssociates (HDB) was commissioned to help implement the BIM procedures in parallel with the traditional 2D designs, which are already nearing completion. The team needed to incorporate the 2D models into the BIM process as well as integrate temporary works, project constraints, and traffic management as active elements within the 3D model. A key objective of the project was to create information models that supported sufficient attribute data to ensure 4D (construction sequenc- ing), 5D (cost information), and future 6D (asset information) mod- eling deliverables could be met. To accommodate these challenges among a team where many members had no previous BIM experience, CCJV relied on the flexibility and interoperability of Bentley Systems technology to deliver this groundbreaking infrastructure project for Highways England. Pushing the limits of BIM Costain-Carillion JV creates 3D information models to support 4D, 5D, and 6D deliverables. By Steve Cockerell
BIM advancements drive standards With the project well underway prior to implementing the use of BIM, CCJV faced the challenge of educating and engaging team members to ensure that the collaborative BIM approach was incorporating and building on 2D design work already accomplished, and producing models from 2D drawings without compromising the production of traditional deliverables. Following its four factors of a successful BIM project — people, col- laboration, process, and technology — CCJV used Bentley’s civil de- sign, modeling, and information management applications to introduce its BIM methodology and produce a fully federated 3D model of the scheme that could be maintained throughout the project life cycle. Teaming with Bentley enabled CCJV to take full advantage of key tech- nologies, including Bentley Class Editor, OpenRoads, and Subsurface Utility Engineering (SUE). This, combined with lessons learned from other projects, was helpful in developing an effective BIM approach embraced by all stakeholders. Furthermore, creating BIM processes and tools and working back- wards from the familiar traditional requirements helped bridge the gap between conventional design deliverables and new BIM initiatives. For example, producing 5D costing reports from the models in the same format as the traditional bills of quantities, output on spreadsheets, was a tool and format familiar to the entire project team. This tactical ap- proach to BIM built trust and accelerated full engagement in the 3D federated modeling process. Effective data management To establish BIM Level 2 compliance and adopt Highway England’s draft standardAdvice Note, CCJV needed to implement a collaboration tool to control the project models and documents. The JV team selected ProjectWise and configured the software to include the requirements of the Advice Note. ProjectWise provided a connected data environ- ment and significant improvement compared with earlier collaborative processes used during the design stage, establishing a single source of truth for all project information. Bentley’s data sharing and information management technology instilled clarity within the workflows needed to check, review, and issue documents and models.
20
csengineermag.com
april 2018
Made with FlippingBook Annual report