LOD 100—Conceptual

Elements are not geometric presentations. They may be symbols or other generic representations of information that can be derived from other model elements. Any information derived from LOD 100 elements must be considered approximate.

LOD 200—Approximate Geometry

Elements are graphic representations of generic placeholders for volume, quantity, location, or orientation information. Any information derived from LOD 200 elements must be considered approximate.

LOD 300—Precise Geometry

Elements are graphically represented as specific systems, objects or assemblies: quantity, shape, size, location, and orientation can be measured directly, without having to refer to non-modelled information such as notes or dimension callouts.

LOD 350—Precise Geometry with Connections

Elements are enhanced beyond LOD 300 by the addition of information regarding coordination interfaces with other building systems. For example, a LOD 350 masonry wall element would include jamb conditions, bond beams, grouted cells, dowel locations, and joints.

LOD 400—Fabrication/Ready Geometry

Elements are modelled at enough detail and accuracy for fabrication of the represented component.

LOD 500—Operational/As-built Models

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

LOD 600—Operate

Elements are 100% geometric presentations. Services and BIM model updated such as displacement or damage.