LOD 100
The model consists of generic representations or symbols showing the existence of a system, but lacks specific physical attributes.
LOD 200
Elements are modeled as generalized systems or assemblies with approximate quantities, size, shape, and location.
LOD 300
Elements are modeled as specific systems where quantity, size, and location are accurate for coordination and shop drawings.
LOD 350
​Includes the parts necessary for coordination with other building systems, such as supports, hangers, and clearances.
LOD 400
Elements are modeled with enough detail and accuracy for fabrication, including specific bolt holes, welds, and shop-level data.
LOD 500
The model represents the project as it exists in the real world, verified after construction for facilities management and maintenance.