| BIM-LOD Definitions: Level of development regarding the 3D model that has been produced. Not to be confused with the level of detail, level of development refers to how much information and how accurate geometrical and data information is within the model. LOD levels are further defined in the BIM Handbook NZ release 2 Nov 2016. Kirk Roberts has elaborated on these levels and sets its own standards on what these are. | ||
| BIM - BEP (BIM Execution Plan) | Refer PL-039c GEN-012-a | Building Information Modelling - Execution plan |
| BIM - LOD 100 | Refer PL-039c GEN-012-a | The model elements are a graphical representation and don’t necessarily represent the true shape or set out. For example, a simple Box may be modelled to represent a column or an entire office space within the project. Elements are still required to be tagged with identity data to allow documents to be produced at DL-100 also. LOD-100 is typically used for (but not limited to) models being developed at the Concept phase. |
| BIM - LOD 200 | Refer PL-039c GEN-012-a | The model elements move from being generic representations to Approximate representations. Approximate in terms of size, geometry location. An example of this would be a building model at the preliminary phase. Whilst the models’ elements themselves are accurate (beams columns panels etc.) they aren’t necessarily coordinated fully and can’t be considered positionally accurate. Specific fine detail elements aren’t typically modelled at this phase (connections/glazing elements etc.) but maybe included depending on the project complexity scale. LOD-200 is typically used for (but not limited to) models being developed at the preliminary phase. |
| BIM - LOD 300 | Refer PL-039c GEN-012-a | The model elements move from being approximate representations to specific representations. All critical elements of the design are modelled and can be scheduled to allow quantity take offs etc. Key areas where details are taken may include specific 3D components but aren’t necessarily populated throughout the model. All elements should be accurate and coordinated in terms of shape size and location. DL-300 is typically used for (but not limited to) models being developed at the developed design phase. |
| BIM - LOD 350 | Refer PL-039c GEN-012-a | Model elements are again specifically represented however we now move from a model that is somewhat complete (LOD-300) to a complete model. Connections and any specific elements are modelled and are populated throughout the model accurately in terms of size shape and set out. Accurate schedules can be taken from LOD-350 models and include identity data allowing accurate pricing and take-offs. Thorough coordination is imperative to achieving this level and the complete model required appropriate coordination with other disciplines to achieve LOD-350. LOD-350 is typically used for (but not limited to) models being developed at Detailed Design and Construction phase. |
| BIM - LOD 400 | Refer PL-039c GEN-012-a | Model elements are now providing a graphical representation allowing components to be fabricated. For example, precast panels will be 100% dimensionally accurate, all cast in components will be modelled and positionally accurate, all reinforcing is modelled and accurate in terms of shape, size position etc. LOD-400 involves a lot of time and thorough coordination. The technicians should confirm Kirk Roberts scope prior to developing a model to this level. LOD-400 is typically used for (but not limited to) models being developed at Construction and Fabrication phase. |
| BIM - LOD 500 | Refer PL-039c GEN-012-a | This level is a site verified representation record model of elements (within Kirk Roberts scope) that have been constructed on-site. An extensive amount of work is required in achieving this level and all technicians should reconfirm with the project lead if this level is within the Kirk Roberts fee agreement prior to completing any as-built documents. |