3D modelling and a robust process for managing the model information correctly underpinned the team’s approach. The federated model of the entire new build brought together over 400 individual models from all disciplines, allowing Atkins to demonstrate the value of having a virtual model to highlight opportunities for change and facilitate quick and easy comment and sign off. It also meant improvements to the design through value engineering could be more effectively communicated to the client.


Atkins used the 3D model to explain that raising part of the basement level in the pumping station would greatly reduce the size of the cofferdam and decrease the amount of concrete required. Raising the slab also meant that the internal flooring could be optimised, improving access to equipment and enhancing safety.


The granularity of Atkins’ model ensured it could be aligned to the construction programme, to facilitate the use of 4D timelining to provide a visual aid for monitoring progress and planning construction activities to avoid clashes in the schedule. Costs and embedded carbon were also added to give the team a complete picture of the work in progress.


A BIM station was set up in the common area of the site offices where site personnel could navigate around the model to their designated work areas to check for safety concerns and access routes, or to simply orientate themselves within the structure and ongoing construction areas. Client operatives visited the station to view a facility that would not be handed over to them for at least another 12 to 18 months. This often led to feedback from them, further aiding the design process. The model was also utilised by the Safety, Health and Environment (SHE) department as an aid for inductions, tool box talks and risk assessments.


The value of Atkins’ BIM strategy will continue to be demonstrated following the completion of the work. The model is flexible enough to incorporate asset management data, which will provide the basis for improved operability and maintainability of the asset following handover.


Benefits


Facilitates clear communication with clients and encourages collaboration within the design and construction team


Allowed changes to the design to be approved within the schedule, resulting in cost and safety benefits


Reduced the amount of time spent reviewing and approving improvements to the design


Allowed Atkins to demonstrate the wider impact of changes to the design and how it would affect future operations, starting with the end in mind


Value engineering improvements were more easily identified and communicated


The design model was used an an aid for inductions, toolbox talks and risk assessments


The value of Atkins’ BIM strategy will continue to be demonstrated following the completion of the work. The model is flexible enough to incorporate asset management data, which will provide the basis for improved operability and maintainability of the asset following handover.


To find out more about Atkins and our capabilities contact:


Paul J. Heath CAD manager


Tel +44 (0)1925 238221 Email paul.heath@atkinsglobal.com www.atkinsglobal.com/uk


BIM Collaborating for success | 19


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