This is the first in a series of posts where we'll be showcasing each of the winners of every category from the BIM4SME Awards 2017.
We are starting with the winners of the Best use of BIM for Construction Sequencing, a joint venture between John Sisk & Sons and Lagan Construction Group, for their work on the A19 / A1058 Coast Road Junction Improvement project for Highways England.
A19 / A1058 Coast Road Junction Improvement Project, UK
Highways England appointed the contracting joint venture Sisk Lagan JV to construct the A19 / A1058 Coast Road junction improvement at North Tyneside. The junction, used by thousands of people every day, is on the main route to and from the Tyne Tunnel and will mean that drivers travelling along the A19 will no longer have to queue at the roundabout to go straight on. The project started in August 2016 and is due to be completed in March 2019.
The proposed works include:
• Realigning the A19 under the existing A19 roundabout;
• Constructing slip roads to allow the A19 / A1058 Coast Road junction to provide access to the junction to and from the lowered A19;
• Constructing 3 No. new single span structures to allow the A1058 Coast Road and A19 roundabout to cross over the realigned A19;
• Widening of the Middle Engine Lane railway bridge to accommodate the A19 north-facing slip roads and
• The installation of new infrastructure and street furniture associated with the scheme works and retaining and enhancing facilities for cyclists, horse riders and pedestrians.
Critical to the success of the project; the existing A19 and A1058 must continue to operate 24/7 in an efficient and safe manner. To enable a continuous safe environment, traffic management is currently in place on both the A19 and A1058 (lanes have been narrowed with 30mph speed limits) and there will be a 30mph limit on the A1058 for the duration of the work. There will be some overnight carriageway closures.
Due to the complexity and scale of the project and working within a busy and live environment, the construction methodology posed significant challenges to ensure the project could be delivered on time, on budget, safely and efficiently, while maintain high levels of network availability and ultimately improving road user satisfaction.
The Project Team sought an innovative solution that would enable them to meet the project requirements while delivering a high-quality product in a safe environment for all involved.
The Project Team collaborated to innovate and utilise BIM focusing specifically on the benefits offered by 4D BIM to aide with Planning Coordination, Buildability and Temporary Works planning to significantly reduce the risk on the scheme and optimise the proposed solution.
The Project Team have fully embraced the BIM ethos of Collaboration and are working with the Design Team to develop accurate 3D models that reflect the proposed construction sequence.
The Project Team worked together to review and assess the potential construction sequences in a virtual reality prior to starting on site. 4D BIM makes it possible for the Project Team to visualise how the construction sequencing would work at any point in time by simulating a visual animation. 4D BIM is enabling the planners to visually communicate and plan activities in the context of time and space, taking account of resources, procurement, spatial constraints and other concerns. This makes possible the adoption of alternative approaches to site layout, scheduling, logistics etc. during the construction phase. This ‘optioneering’ process allowed the contractor to genuinely assess all risks and opportunities and give valuable feedback regarding constructability, estimated construction cost and sequencing.
The Project Team are now leveraging many benefits of utilising BIM to assist the construction sequence;
One of the significant benefits of 4D BIM is that it provides an accurate visualisation of the construction works, which has enabled the Project Team to full interrogate the risks and opportunities associated with all potential construction sequences. Using 4D BIM, the scope of works has been better understood and therefore a better solution was optimised.
• Detecting planning clashes
Planners have been able to detect time conflicts and clashes in the construction phase during the planning process. This has significantly reduced site conflicts and reduced risk to the programme and resulted in cost and time savings on site because of effective planning.
• More accurate and detailed construction sequence
The use of 4D BIM enabled the team to develop a more accurate and detailed work plan then they would have achieved with the traditional methods. It provided actual spatial information and gave precise quantities for material needed at required times. This helped to reduce the need for excess material orders.
The Project Team have developed a procurement schedule, linked to the project programme that shows milestone dates for all site logistics; when orders need to be in place; when resources will be required on site; approval periods; and lead-in times for materials and plant. It is a live document, used to track progress weekly and identify potential problems for resolution.
• Risk reduction in a program
Using 4D BIM, the project team significantly minimised project risk. Visualising forecasted based on actual, on-site progress proved to be an essential management tool and allowed the project team to foresee any possible delays and to take advance action to keep the project on track.
In addition to detection of conflicts, the visualisation of construction work enabled the planners to incorporate the safety concerns in the planning phase. All works were assessed to ensure spatial and safety issues were identified prior to construction to confirm the buildability of each activity in a safe environment for all site operatives.
4D BIM was used to generate simulations of forecasted Traffic Management proposals to enable the Client to visualise the implications to the live network.
• Assist in reducing overall project duration
4D BIM enabled the Project Team to propose an innovative solution in confidence that has reduced the programme by 31 weeks.
• Better communication
One of the most significant benefits afforded by the use of BIM, has been the benefits of better communication. The use of visualisations and animations has allowed the Project Team to fully engage all stakeholders;
Facilitating communication between the Client and local community in understanding the project and proposed temporary works and traffic management plans. The Project Team have been involved in several community consultations and 4D BIM visualisations are used for regular updates via the Highways England Newsletters.
The Project Team also created an animation of the proposed scheme which was made available through social media and has enabled the public to understand the project in an accessible format.
Identifying potential bottlenecks and as a method to improve collaboration among different project teams.
The use of visual aids outputted from the BIM model has been shared across the project team, and extended to work place briefings to operatives and supply chain partners. This will allow us to share information efficiently but more importantly it will generate useful feedback allowing continuous improvement before works commence.
The benefits of BIM have allowed SLJV the confidence to propose an innovation solution to a large scale complex project. This innovative approach will enable the Project Team to deliver 31 weeks ahead of schedule, which will give the Client quicker access to an essential asset.
“The triple-decker roundabout is an excellent example of the innovative solutions that civil engineers develop to improve and create infrastructure, in the north east and around the globe.”
Sarah Kellerman, (previous) ICE Regional Chairman
The A19 / A1058 Coast Road Junction Project is one of the first Infrastructure projects in the UK to utilise 4D BIM to support so many activities successfully.
While the full success will be realised on completion of the project, there is evidence of many positive impacts of using 4D BIM which are not possible to achieve through traditional planning methods. The most significant benefits, to date, have been for better visualisation of construction work, better communication and increased planning efficiency. Implementing 4D BIM has allowed the planners to detect problems prior to construction which has reduced the amount of rework and clashes. This has enabled a more reliable and detailed work plan to assist the project completion within the proposed time and budget.
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