For members not familiar with BIM planning, it is the process of developing and documenting the various responsibilities of the stakeholders involved in a BIM project. As defined in the Penn State guide, the stages of BIM planning are: Identify BIM Goals and Uses Design the BIM Project Execution Process Develop Information Exchanges Define the Supporting Infrastructure for BIM Implementation Level of Detail vs. Level of Development The LoD concept was developed by VICO Software for construction cost estimation. Faced with the problem of determining how accurate, or how definitive, were the model elements to which they wished to assign costs, they developed the concept they called "Level of Detail". LOD 100 meant not very definitive (an area or volume rate is accurate enough) LOD 200 assume the number of items in the model is correct, but use an estimate for each, LOD 300 items are identified and actual cost can be used, LOD 400 is a m...