In projects requiring ’BIM’ we are often asked to define the ‘LOD’ of objects within Building Information Models. In the Client’s Requirements as well as in the BIM Execution Plan, we need to fill long spreadsheets where objects are classified in different classification systems and a ‘LOD’ is required at each stage.

But are we sure that the ‘LOD’ concept is clear to everybody? Is it always associated to objects? Are we managing it the best way? And most of all, how can we verify and validate it?

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