4.1.3 Project Context

A project representation context indicates the coordinate system orientation, direction of true north, precision, and other values that apply to all geometry within a project or project library.

A main geometric representation context is created for 3D model, and 2D representations, both can be further refined using geometric representation sub contexts.

Figure 5 illustrates an instance diagram.

Project ContextIfcContextIfcGeometricRepresentationContextIfcLabelIfcLabelIfcDimensionCountIfcAxis2Placement3DIfcDirectionIfcGeometricRepresentationSubContext

Figure 5 — Project Context

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