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July 5, 2024
BIM, as we already know, is a powerful tool that has revolutionized the way architects, engineers, and construction professionals approach the design, construction, and management of buildings and infrastructure. The information-rich models that are created using BIM
As a project passes through different phases, the level of development in a BIM model also increases. Similarly, BIM dimensions can be added to the existing information contained in BIM to enhance the data associated with a model and provide a greater level of understanding of a construction project.
BIM dimensions are not to be confused with the spatial dimensions we are familiar with. In the context of BIM, dimensions refer to the type and details of digitized building information required in a BIM model for a construction project. BIM dimensions have now reached up to 10D, starting from 2D, though only until 7D has been clearly defined.
In this blog, we will explore the different BIM dimensions, their purpose, and how they are useful in the AEC.
3D BIM represents the three geographical dimensions (x, y, z) of a building structure. The geographical capabilities of 3D BIM help stakeholders visualize a building's structure in 3 dimensions even before the project is started. It enables all the stakeholders to collaborate effectively for modeling and solving typical structural problems.
When it comes to 3D BIM, it involves the creation of a 3D model and sharing the same information using a Common Data Environment (CDE). The benefits of 3D BIM include enhanced 3D visualization of the entire project, streamlined communication and sharing of design expectations, easy collaboration between multiple teams, and reduced instances of rework and revisions due to complete transparency from the beginning.
4D BIM is related to planning the construction site by adding a new element, i.e., time. Scheduling data helps in outlining how much time will be involved in the completion of the project and how the project will evolve over time. The information can provide elaboration about the time taken for installation or construction, the time needed to make the project operational, the sequence of installation of various components, along other scheduling information.
4D BIM can help in early conflict detection by seamlessly managing information related to site status and visualizing the impact of changes undertaken during the entire life cycle. The benefits of 4D BIM include improved site planning and scheduling optimization, seamless coordination among architects, contractors, and on-site teams, better preparedness in terms of next steps during every construction stage, enhanced information sharing related to timeline expectations, and enhanced safety and efficiency due to documentation of an entire plan with specific timelines.
Now, let's delve into what 5D is in terms of BIM. 5D BIM is useful in cases where budget analysis and cost estimation are required from the beginning of any project. It goes without saying that cost is one of the most important elements associated with a project. 5D BIM enables project promoters and owners to analyze the costs that will be incurred over time in the project activities.
With 5D BIM, one can easily extract the costs associated with a scenario and can also factor in changes along the way. The benefits of 5D BIM include real-time cost visualization with notification on changes in costs, automatic count for components/system/equipment associated with a project, simplified cost analysis and budgetary analysis with predicted and actual spends over time, and minimization of budgetary offshoot due to regular cost reporting and budgeting.
6D building information modeling helps to analyze the energy consumption of a building and come out with energy estimates at the initial design stages. Accounting for various life stages of a structure, 6D BIM construction ensures accurate prediction of energy consumption requirements. 6D BIM technology takes the industry a step beyond the conventional approach that just focuses on the upfront costs associated with a project.
This approach helps in getting an idea of the entire cost of an asset and how the money should be spent on achieving sustainability and cost-efficiency. 6D BIM is also known as integrated BIM as it involves detailed information that can help in supporting facility management and operations at a future date. The benefits of 6D BIM include reduced energy consumption in the long run, faster and more accurate decision-making related to component installation during the design process, detailed analysis and impact of a decision on economic and operational aspects over the entire lifecycle, and better operational management of the building or structure after handover.
7D BIM is all about operations and facility management by building managers and owners. The dimension is used to track important asset data such as its status, maintenance/operation manuals, warranty information, technical specifications, etc., to be used at a future stage. It is a unique approach where everything related to the facility management process is collated in a single place within the building information model.
Such a tactic helps in improving the quality of service delivery during the entire lifecycle of a project. BIM at this stage ensures that everything in a project stays in its best form till demolition. The benefits of 7D construction include optimized asset and facility management from the design stage to demolition, simplified and easy replacement of parts and repairs anytime during the entire life of a building, and a streamlined maintenance process for contractors and subcontractors.
BIM dimensions are various specifications for information in the building information model that will be useful for planning the project stages.
BIM dimensions have now reached up to 10D, starting from 2D, though only until 7D has been clearly defined. The most popular dimensions are from 3D to 7D.
BIM dimensions refer to the type and details of digitized building information required in a BIM model for a construction project, while BIM levels refer to the level of collaboration and information exchange between the different stakeholders involved in a project.
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