LOD 200
Conceptual Design
Approximate size, shape, and location of mechanical equipment and systems. Used for early-stage coordination and spatial planning during schematic design phases.
LOD 300
Design Coordination
Accurate geometry, size, and location for all mechanical room components. Used for multi-trade clash detection and design coordination - the most common standard for commercial projects.
LOD 350
Construction Ready
Adds support structures, connections, and interface elements to the LOD 300 model. Required for coordinating mechanical systems with structure and other trades in tight ceiling spaces.
LOD 400
Fabrication Ready
Full fabrication-level detail - every pipe spool, fitting, hanger, and connection is modeled with exact dimensions and specifications. Used to generate shop drawings and drive off-site prefabrication.