Construction BIM models are created by contractors or subcontractors to support the construction process. They are typically derived from the design or engineering models provided by the architects or engineers, but they may also include additional details, such as fabrication, installation, coordination, and sequencing information. Construction BIM models are used for tasks such as clash detection, quantity take-off, scheduling, site logistics, and safety analysis. Construction BIM models are usually more detailed and accurate than design or engineering models, as they reflect the actual conditions and specifications of the project.

Design BIM models are created by architects or engineers to support the design or engineering process. They are typically based on the client’s requirements, codes, standards, and best practices. They may also include analysis, simulation, and optimization information. Design BIM models are used for tasks such as conceptual design, schematic design, design development, documentation, and coordination. Design BIM models are usually more conceptual and abstract than construction models, as they represent the intended design or engineering solutions for the project.