What Are BIM Dimensions? Learn About 2D, 3D, 4D, 5D, 6D, 7D, and 8D Models!

Building Information Modeling (BIM) dimensions can improve efficiency in building constructions, thus maximizing results. Know the benefits of different BIM forms, from 2D to 8D, and even 9D and 10D.

What is BIM?

Building Information Modeling (BIM) is the process of utilizing well-structured digital data or information to design, operate, and deliver building projects. Besides, BIM is a digital geometric model developing process that involves collaborative teamwork, thus improving outcomes.

BIM facilitates engineers to get accurate insights into potential project risks, thus eliminating or minimizing flaws and inaccuracies. By getting access to centralized, transparent, and real-time information on the project, stakeholders and builders can learn about its ins and outs, thus making better construction decisions.

What Are BIM Dimensions?

BIM dimensions refer to levels of data and information that builders or designers can enter into a 3D model via BIM software. It may include time data, 3D model data, expenses, and sustainability. There can be multiple kinds of BIM dimensions, ranging from 2D to 8D. Let’s discuss each along with their benefits.

– 2D BIM: Dimensional View

It constitutes the X and Y axes, which include further information on two parameters. The primitive CAD systems are good examples of 2D BIM models, wherein engineers could develop sections and plans on computers more accurately and quickly. Therefore, it eliminates the human inaccuracies and errors that manual drawing boards were prone to.

– 3D BIM: Dimensional Model

3D BIM is the most popular of all types, and it involves an efficient process of collecting graphical, geometrical, and non-graphical data and information to develop 3D models. As the name suggests, it enables builders to visualize the building in 3 dimensions through updated views throughout the project’s duration, from conception to implementation. Moreover, 3D BIM modeling services help reduce flaws and rework by improving 3D visualization through effective team collaboration.

– 4D BIM: Time Schedule

4D BIM helps to gather time information to create a richer information mix for the construction project. It includes activities like simulation, scheduling, construction phasing, time blocking, and sequencing. 4D BIM could include information regarding installation time, curation of materials, time until operational procedures, and more.

One can enter this information directly into the model, thus enabling project planners to create and develop proposals well in advance. Plus, 4D BIM modeling services involve construction sequencing through the use of timelines and Gantt charts.

– 5D BIM: Budget

5D BIM is primarily related to information about building expenses, cost estimation and analysis, expense management, and budgeting. For instance, it keeps track of the capital cost of buying different components and helps users gather accurate expense data from the building model. 5D BIM modeling services also aim to identify changes in this cost information over time, thus bringing higher accuracy to a project’s cost estimates.

– 6D BIM: Facilities Management

6D BIM, also known as the “Project life cycle information” or Facilities Management, emphasizes an asset’s sustainability and energy analysis. Information mix for a 6D BIM may include maintenance schedules, manufacturer data, the component’s configuration for expected lifespan, optimum performance, and so on. Builders can make better decisions on assets having better economic scopes and longer shelf life. Furthermore, 6D BIM information can allow facilities managers to pre-plan maintenance procedures well ahead of time.

– 7D BIM: Sustainability

It includes data concerning facility management and maintenance. 7D BIM looks after facility operations and their efficiency while focusing on effective maintenance through the construction lifespan. Using this business information modeling technique, developers can assess an asset’s or facility’s management, starting from the design phase to the demolition phase.

– 8D BIM: Occupational Safety and Health

Last but most important, 8D BIM deals with data on on-site accident prevention by collecting information on safety during building design and construction. It focuses on design optimization to deliver the best results during the pre-construction phase. Besides, 8D BIM views the building’s virtual construction site in the form of 3D digital models, thus reducing the risks of accidents.

Apart from that, there are 9D and 10D BIM systems, too, which gather data on lean construction and construction industrialization, respectively.


To conclude, BIM dimensions can act as great conversation starters with potential clients as they can demonstrate multiple BIM use cases. The above-mentioned BIM dimensions can offer engineers and designers a better understanding of construction projects and insights into project risks via smart model-based techniques. Try consulting professionals rendering 3D BIM modeling services or other forms of BIM to ensure improved outcomes.