The Evolution of LOD

Initially introduced by the American Institute of Architects (AIA) in 2008, LOD has become an industry standard for detailing levels in BIM models. GENx recognizes the historical significance of LOD and its impact on effective communication among architects, engineers, and other professionals. Standardized specifications and detailed information enhance clarity, ensuring efficient deployment of resources at all design and construction levels.

BIM Level of Development 

(LOD) 100, 200, 300, 350, 400, 500

GENx Design & Technology offers a comprehensive overview of LOD 100, 200, 300, 350, 400, and 500, providing clarity and precision in BIM processes. GENx acknowledges the evolution of LOD with the addition of LOD 350. In today’s context, achieving a minimum of LOD 350 for 80 to 90 percent of model elements is essential. We specialize in LOD 400 MEP BIM Modeling and Coordination services.

Levels of Development

• LOD 100: Pre-design stage with 2D symbols and masses.
• LOD 200: Partial definition of elements, including quantity, size, shape, and location.
• LOD 300: Exact dimensions and precise relative positions for enhanced precision.
• LOD 350: Detailed information about an element’s relation and connection with other components.
• LOD 400: Creating detailed models tailored for fabrication and assembly needs. Model Elements represent specific systems or assemblies, incorporating essential details like size, shape, location, quantity, and orientation. This level includes features such as notching, holes, angles/clips, and allows for the integration of non-graphic information into Model Elements.
• LOD 500: Real-life representation of elements in a building.

Unlocking the Potential of BIM Models

GENx explores the Approved Use Guide by the U.S. General Services Administration, providing insights into what BIM models should be capable of at different development stages. This includes 3D model-based coordination, 4D scheduling, cost estimation, program compliance, sustainable materials, and analysis/simulation.

We address challenges related to the LOD lexicon, emphasizing the importance of standardization in 3D BIM models to minimize errors. LOD acts as a key to accurate execution, aligning design and execution teams for project success.

For more information on BIM and our services, contact our experts at GENx Design & Technology. Let us bring clarity and efficiency to your projects.