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4.1.7.4.1 Product Grid Placement

Product occurrences may be positioned relative to a grid, where the axes of such grid may be modified such that product occurrences are re-positioned relative to grid axes.

The following diagram shows the generic classes and relationships used when applying this concept. In addition, concepts may have particular importance to common or standardised industry practices and scenarios. For these specific usage scenarios, the table below shows a recommended list of general usage patterns that users may adopt.

G <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProduct.htm'>IfcProduct</a> IfcProduct 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridPlacement.htm'>IfcGridPlacement</a> IfcGridPlacement 1. PlacementRelTo [0:1]      PlacesObject [0:?]      ReferencedByPlacements [0:?] 2. PlacementLocation [1:1] 3. PlacementRefDirection [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcProduct.htm'>IfcProduct</a>:ObjectPlacement1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridPlacement.htm'>IfcGridPlacement</a>:IfcGridPlacement0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVirtualGridIntersection.htm'>IfcVirtualGridIntersection</a> IfcVirtualGridIntersection 1. IntersectingAxes [2:2] 2. OffsetDistances [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridPlacement.htm'>IfcGridPlacement</a>:PlacementLocation1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVirtualGridIntersection.htm'>IfcVirtualGridIntersection</a>:IfcVirtualGridIntersection0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDirection.htm'>IfcDirection</a> IfcDirection      LayerAssignment [0:1]      StyledByItem [0:1] 1. DirectionRatios [2:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridPlacement.htm'>IfcGridPlacement</a>:PlacementRefDirection1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcDirection.htm'>IfcDirection</a>:IfcDirection0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObjectPlacement.htm'>IfcObjectPlacement</a> IfcObjectPlacement 1. PlacementRelTo [0:1]      PlacesObject [0:?]      ReferencedByPlacements [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridPlacement.htm'>IfcGridPlacement</a>:PlacementRelTo1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObjectPlacement.htm'>IfcObjectPlacement</a>:IfcObjectPlacement0 IfcLengthMeasure_0 IfcLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVirtualGridIntersection.htm'>IfcVirtualGridIntersection</a>:OffsetDistances1->IfcLengthMeasure_0:IfcLengthMeasure0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridAxis.htm'>IfcGridAxis</a> IfcGridAxis 1. AxisTag [0:1] 2. AxisCurve [1:1] 3. SameSense [1:1]      PartOfW [0:1]      PartOfV [0:1]      PartOfU [0:1]      HasIntersections [0:?] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVirtualGridIntersection.htm'>IfcVirtualGridIntersection</a>:IntersectingAxes1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridAxis.htm'>IfcGridAxis</a>:IfcGridAxis0 IfcGrid_0 IfcGrid 1. GlobalId [1:1] 2. OwnerHistory [0:1] 3. Name [0:1] 4. Description [0:1]      HasAssignments [0:?]      Nests [0:1]      IsNestedBy [0:?]      HasContext [0:1]      IsDecomposedBy [0:?]      Decomposes [0:1]      HasAssociations [0:?] 5. ObjectType [0:1]      IsDeclaredBy [0:1]      Declares [0:?]      IsTypedBy [0:1]      IsDefinedBy [0:?] 6. ObjectPlacement [0:1] 7. Representation [0:1]      ReferencedBy [0:?]      PositionedRelativeTo [0:?]      ReferencedInStructures [0:?]      ContainedInStructure [0:1]      Positions [0:?] 8. UAxes [1:?] 9. VAxes [1:?] 10. WAxes [1:?] 11. PredefinedType [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcObjectPlacement.htm'>IfcObjectPlacement</a>:PlacesObject1->IfcGrid_0:ObjectPlacement0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLabel.htm'>IfcLabel</a> IfcLabel <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridAxis.htm'>IfcGridAxis</a>:AxisTag1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLabel.htm'>IfcLabel</a>:IfcLabel0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLine.htm'>IfcLine</a> IfcLine      LayerAssignment [0:1]      StyledByItem [0:1] 1. Pnt [1:1] 2. Dir [1:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridAxis.htm'>IfcGridAxis</a>:AxisCurve1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLine.htm'>IfcLine</a>:IfcLine0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a> IfcBoolean <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridAxis.htm'>IfcGridAxis</a>:SameSense1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcBoolean.htm'>IfcBoolean</a>:IfcBoolean0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPoint.htm'>IfcCartesianPoint</a> IfcCartesianPoint      LayerAssignment [0:1]      StyledByItem [0:1] 1. Coordinates [1:3] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLine.htm'>IfcLine</a>:Pnt1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPoint.htm'>IfcCartesianPoint</a>:IfcCartesianPoint0 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVector.htm'>IfcVector</a> IfcVector      LayerAssignment [0:1]      StyledByItem [0:1] 1. Orientation [1:1] 2. Magnitude [1:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcLine.htm'>IfcLine</a>:Dir1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcVector.htm'>IfcVector</a>:IfcVector0 IfcLengthMeasure_1 IfcLengthMeasure <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcCartesianPoint.htm'>IfcCartesianPoint</a>:Coordinates1->IfcLengthMeasure_1:IfcLengthMeasure0
Figure 4.1.7.4.1.A

General Usage

ApplicableEntity
IfcElement
Table 4.1.7.4.1.B

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