3D BIM Levels of Development (LOD)

LOD 100

Conceptual

Gives the basic layout of a site.

Defines area, height, volume, location, and orientation of a building.

LOD 200

Builds on the conceptual model to include elements with approximate size, shape, and location as well. Non-geometric information can be attached to model elements of this LOD.

LOD 300

Accurate modeling and shop drawings in which model elements are defined with specific assemblies, precise quantity, size, shape, location and orientation. Non-geometric information can also be attached to the model elements of this LOD.

LOD 400

With a LOD 400 model, elements are represented as specific assemblies, with complete fabrication, assembly, and detailing information in addition to precise quantity, size, shape, location and orientation. Non-geometric information can also be attached to the model elements of this LOD.

LOD 500

Elements are modeled as constructed assemblies for maintenance and operations. Elements are also modeled in actual and accurate size, shape, location, quantity, and orientation. Non-geometric information is also attached to modeled elements.