Definition of the “BIM Information Model”
The Project Information Model (PIM) and Asset Information Model (AIM) as the combination of Graphical Data, Non-Graphical Data & Documents related to a building or construction project, all stored and managed in a Common Data Environment (CDE). The Project Information Model (PIM) starts off as the “design intent” model, then progresses to the construction information model. It provides the historical development of all the project information through the project stages during the capital delivery phase, produced between designers, contractors and their suppliers. It is very important to keep all this information for future reference, in case there is a problem or issue later. The Asset Information Model (AIM) is based on the final, verified, “as-built” information, and is used to operate and maintain the building going forward also defines the Level of Model Definition (LoMD), as being a combination of Level of graphical Detail (LOD), and Level of non-graphical data or Information (LOI), required at different stages of the project.
So, when you read the above definition, clearly the “Information Model” is much more than just the 3D graphical BIM, Revit or IFC model – it represents all the project information.
What type of “information” do we need to know about a building, “at the end of the day”? Typically, the following lists of information are required: (see a more detailed list at the end of this article)
Lists of Information Required
- Rooms/Spaces (ideally geo or spatially located)
- Zones/Departments (collections of rooms/spaces/volumes)
- Systems or Assemblies (groups of components)
- Components or Equipment (and which system/assembly/zone/space they belong to)
- Products/Materials (and which system/assembly/zone/space they belong to)
- Maintenance Tasks, Spare Parts, and Tools/Resources required to maintain and operate the building
- Contact details of Companies/People involved in the project (designers, contractors, suppliers, etc)
- Documents related to the project, building, systems, products & materials