Quante e quali sono le dimensioni del BIM?

November 20, 2022
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We know What is BIM? and what are its advantages, but how are the different information managed within it? Let's see what are the BIM dimensions and how they are used within a project.

What are BIM dimensions

When talking about dimensions, in an architectural project one thinks about the graphic representation of the work, that is, 2D and 3D, dimensions relative to the geometry of the work.

However, we know that within a BIM project there is not only geometric information, but also information relating to each phase of the project's life, from its conception to its dismantling.

This leads to the existence of new dimensions, the BIM dimensions, containers of additional information on every aspect of the project, essential for the correct construction and management of the work.

What are the 7 dimensions of BIM

BIM dimensions are governed by the UNI 11337 standards, which recognize seven dimensions, from 3D to 7D.

BIM 3D: Three-dimensional modeling

Thanks to the 3D dimension of BIM you get a three-dimensional model of the work, completely similar to the real building and containing all the information relating to its geometry.

Having a 3D model of the work allows you to visualize the project even before its actual realization and offers the possibility of intervening in advance with any changes.   

BIM 4D: Timings

The BIM 4D it is related to the planning and managing project timelines. Having all the information on the timing is essential for:

  • Improve communication between team members;
  • Anticipate potential problems;
  • Reduce errors.

In this way, work is optimised and effectively manages every phase of the project.

BIM 5D: Costs and quantities

With the BIM 5D it is possible to do a detailed analysis of costs and quantity takeoff, the quantification of the specific costs of each process included in the project, for example:

  • Materials;
  • Amount;
  • Labor.

This size allows you to:

  • Monitor and control costs even in case of changes;
  • Manage project work more effectively;
  • Automate cost calculation.

BIM 6D: Management

The 6D it is related to the Facility Management of the project, or the management of the work in every phase of its life.

Provides information regarding items such as:

  • Plants;
  • Component status;
  • Technical specifications;
  • Guarantees;
  • Maintenance manuals, etc.

This allows for a complete and efficient management of the work, with a particular focus on error reduction, cost reduction and more sustainable choices for the project. 

BIM 7D: Sustainability

Speaking of sustainability, the BIM 7D It focuses on the information relating to the sustainability of the work, in the field:

  • Environmental;
  • Economic;
  • Social.

It allows you to create estimates of the energy consumption of the work, in order to reduce them and make the project sustainable.

Three new dimensions: 8D, 9D and 10D

In addition to those just mentioned, today we are talking about new dimensions, ranging from 8D to 10D, which are not yet standardized.

BIM 8D: Safety

The BIM 8D adds all the information relating to the seven dimensions project safety.

Contains information relating to the construction site management, For prevent risky situations and ensure the safety of all those involved in the construction of the work.

BIM 9D: Lean Construction

Through the BIM 9D it is possible digitize processes, making work easier and more streamlined. It allows you to:

  • Optimize or eliminate non-value-adding activities;
  • Automate processes;
  • Working in a perspective Client-driven BIM.

This is to save time and costs and work more effectively at every stage of the project.

BIM 10D: Industrialization of the AEC Sector

The BIM 10D It encompasses the common goal of the remaining nine dimensions, namely industrialize and make the construction sector more productive, optimizing every phase of the work's life.

This is possible through the new technologies, which allow you to centralize data and obtain a complete vision of the project, integrating data relating to the financial, commercial, environmental, safety, risk analysis sectors, etc.