The LOD doesn’t seem to be outlined deliberately by design phases. Looking for LOD 100, 200, 300, 350, 400, 500 Modeling Services for your Design and Construction project. In essence, the Level of Detail can be thought of as input to the element, while the Level of Development is a reliable output. Level of Development is the degree to which the components’ specification, geometry, and attached information have been thought through – the degree to which project team members may depend on the information when using the model. Level of Detail is actually what proportion detail is enclosed within the model element. This specification uses the concept of Level of Development. LOD is usually interpreted as a Level of Detail instead of Level of Development. Now there are six levels of development with an addition of LOD 350 (details below) and it is seen that 80 to 90 percent of the elements in a model should at a minimum reach LOD 350. The company made all the parameters and details associated with a digital model accessible for everyone at various stages of the design process.
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The first instance of LOD usage can be traced to a construction analysis software company, Vico Software, which made use of the LOD-like system to associate digital models with the cost of a project. But the concept of LOD was present much before that. LOD was first introduced by the American Institute of Architects (AIA) in 2008 when it defined five different levels of development to define the detailing levels in a BIM model. By using LOD specifications, architects, engineers, and other professionals can clearly communicate with each other without confusion for faster execution.
Serving as an industry standard, LOD defines the development stages of different systems in BIM. Level of development (LOD) is a set of specifications that gives professionals in the AEC industry the power to document, articulate and specify the content of BIM effectively and clearly. Structural Precast Modeling and DetailingĮverything to Know About Level of Development (LOD) in BIM.