The Building Information Model (BIM) is a set of information generated and maintained throughout the life cycle of a building. BIM is the process of generating and managing a building information model.
BIM covers geometry, spatial relationships, geographic information, quantities and properties of building components (for example manufacturers' details). BIM can be used to demonstrate the entire building life cycle including the processes of construction and facility operation. Quantities and shared properties of materials can easily be extracted. Scopes of work can be isolated and defined. Systems, assemblies, and sequences are able to be shown in a relative scale with the entire facility or group of facilities.
BIM is able to achieve such improvements by modeling representations of the actual parts and pieces being used to build a building. This is a substantial shift from the traditional computer aided drafting method of drawing with vector file based lines that combine to represent objects.
Read more about BIM:
-> Check Autodesk Green Research
Watch the video on youtube.
-> Check also BIM by Professor Charles M. Eastman at Georgia Institute of Technology