Essay on Level of Detail vs. Level of Development in Construction

654 Words Nov 18th, 2015 3 Pages
Level of Development and Level of Detail came into play with the advancement of computers and BIM technology. As the AEC industry began move towards using computer renditions for design and analysis, it became necessary to define the certainty with which drawings could be trusted. The detailing of elements changes throughout the duration of a project, so it is important for the team to be able to recognize what level of detail is provided and how trustworthy it is. For this reason, different levels of development were created to allow for a standardized system of analyzing drawings and details.
Level of Development vs. Level of Detail
The level of Development (LOD) enables construction teams to specify and distinguish the content and
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Level of Development is used by the team to determine how precise and trustworthy a drawing/rendering is while Level of Detail is used to see how much information is provided in a drawing.

LOD requirements
LOD 100- LOD 100 is the equivalent of conceptual design. The model element may be graphically represented with a symbol, but it does not satisfy requirements for LOD 200. Information such as cost per square foot, Tonnage of HVAC, ect. Can be derived.
LOD 200- For LOD 200, the Model Element is graphically represented within the Model as a generic system, object, or assembly with approximate quantities, size, shape, location, and orientation.
LOD 300- The Model Element in LOD 300 is graphically represented within the Model as a specific system, object or assembly in terms of quantity, size, shape, location, and orientation. Non-graphic information may also be attached to the Model Element.
LOD 350: For LOD 350, The Model Element is graphically represented within the Model as a specific system, object, or assembly in terms of quantity, size, shape, orientation, and interfaces with other building systems. Non-graphic information may also be attached to the Model Element.
LOD 400: For LOD 400, the Model Element is graphically represented within the Model as a specific system, object or assembly in terms of size, shape, location, quantity, and orientation with detailing, fabrication, assembly, and installation information. Non-graphic information may

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