4.7.2.1 Space Boundaries 1st Level

Spaces may have boundaries defined by building elements such as walls, slabs, doors, and windows. Such information may be used to determine heat transmission through surrounding materials.

Figure 49 illustrates an instance diagram.

Space Boundaries 1st LevelIfcSpaceIfcRelSpaceBoundary1stLevelIfcElementIfcConnectionSurfaceGeometryIfcSurfaceOfLinearExtrusionIfcArbitraryOpenProfileDefIfcIndexedPolyCurveIfcCartesianPointList2DIfcLengthMeasureIfcArcIndexIfcLineIndexIfcBooleanIfcCurveBoundedPlaneIfcPlaneIfcAxis2Placement3DIfcCurveBoundedSurfaceIfcCylindricalSurfaceIfcAxis2Placement3DIfcOuterBoundaryCurveIfcCompositeCurveSegmentIfcBooleanIfcFaceBasedSurfaceModelIfcOpenShellIfcFaceIfcFaceOuterBoundIfcPhysicalOrVirtualEnumIfcInternalOrExternalEnumIfcRelSpaceBoundary1stLevel

Figure 49 — Space Boundaries 1st Level

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