The Level of Development (LOD) framework is a system used in Building Information Modeling (BIM) to define the amount of detail and accuracy of information contained inside a BIM model at different stages of a project. The LOD framework provides a common language and understanding among project stakeholders concerning the degree of information and model reliability. You can find different LOD specifications available, but the most commonly used framework is the LOD Specification developed by the American Institute of Architects (AIA), the Construction Specifications Institute (CSI), and the National Institute of creating Sciences (NIBS). The AIA LOD Specification defines six degrees of development: LOD 100: Conceptual Design As of this level, the BIM model represents basic massing, volumes, and conceptual design intent. It is used to convey the entire design concept without specific details or accurate dimensions. LOD 200: Schematic Design In this stage, the BIM model provides more detailed information, including approximate sizes, shapes, and locations of building elements. It serves as a tool for design development and additional analysis. LOD 300: Design Development At LOD 300, the BIM model becomes more refined and detailed. It offers specific sizes, shapes, and orientations of creating elements. It incorporates information about systems, assemblies, and connections to aid design development and coordination. Building Information Modelling BedWorth : Construction Documentation At this level, the BIM model includes accurate and detailed information required for construction documentation and coordination. It incorporates specific products, quantities, and assemblies necessary for construction. LOD 400: Construction Stage LOD 400 represents the BIM model with as-built information through the construction phase. It offers actual product and material details, precise dimensions, and specific installation methods. It serves as a reference for construction teams. LOD 500: As-Built Stage At this final level, the BIM model reflects the actual conditions of the built project. It offers accurate and verified as-built information, such as installed equipment, systems, and components. It's important to remember that the LOD definitions can vary greatly slightly with regards to the project or organization. The LOD framework helps project stakeholders align their expectations concerning the level of information and detail in a BIM model at different stages of a project. This facilitates effective collaboration, decision-making, and coordination through the entire project lifecycle.
Building Information Modelling BedWorth
