ABSTRACT
Collaboration is only successful when the scope of each participant’s contribution is clearly defined. Before building information Modelling (BIM), level of detail was the main gauge of responsibility for developing more specific design intentions in the project drawings and associated data. For BIM Level 2, the Level of Definition (LOD) extends level of detail to include the quality of information that is either embedded in or linked to different categories of elements in the federated model. The Toolkit assists in both the understanding of these definitions and classification structures and their application on projects across some 9000 building elements. The Toolkit currently provides over 400 examples of LoD and LoI representations for Architecture, Infrastructure, Landscape Architecture, Civil, Structural and MEP elements across all appropriate work stages. LOD can have a real bearing on the ability to resolve coordination issues in BIM and it must be taken into account when checking for clashes or clearances.
