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4.1.3.1.2 Grid Attributes

This template for attributes, like similar ones, originates from legacy requirements tied to mvdXML and an earlier era when MVD defined exchange information requirements. Such templates no longer add value to the specification, nor do they convey information beyond what is already defined in the schema. Additionally, some templates reference deprecated entities, potentially causing unnecessary confusion. As part of a broader effort to clean up documentation, this and other non-essential templates will be removed in the next release.

Grids may be used to provide a layout reference for building elements.

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.

%3 <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGrid.htm'>IfcGrid</a> 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:?] UAxes 8. UAxes [1:?] VAxes 9. VAxes [1:?] WAxes 10. WAxes [1:?] 11. PredefinedType [0:1] <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridTypeEnum.htm'>IfcGridTypeEnum</a> IfcGridTypeEnum <a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGrid.htm'>IfcGrid</a>:PredefinedType1-><a href='/IFC/RELEASE/IFC4x3/HTML/lexical/IfcGridTypeEnum.htm'>IfcGridTypeEnum</a>:IfcGridTypeEnum0 IfcGridAxis_0 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/IfcGrid.htm'>IfcGrid</a>:UAxes1->IfcGridAxis_0:IfcGridAxis0 IfcGridAxis_1 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/IfcGrid.htm'>IfcGrid</a>:VAxes1->IfcGridAxis_1:IfcGridAxis0 IfcGridAxis_2 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/IfcGrid.htm'>IfcGrid</a>:WAxes1->IfcGridAxis_2:IfcGridAxis0 IfcLabel_0 IfcLabel IfcGridAxis_0:AxisTag1->IfcLabel_0:IfcLabel0 IfcIndexedPolyCurve_0 IfcIndexedPolyCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [1:1] 2. Segments [1:?] 3. SelfIntersect [0:1] IfcGridAxis_0:AxisCurve1->IfcIndexedPolyCurve_0:IfcIndexedPolyCurve0 IfcCircle_0 IfcCircle      LayerAssignment [0:1]      StyledByItem [0:1] 1. Position [1:1] 2. Radius [1:1] IfcGridAxis_0:AxisCurve1->IfcCircle_0:IfcCircle0 IfcBoolean_0 IfcBoolean IfcGridAxis_0:SameSense1->IfcBoolean_0:IfcBoolean0 IfcLabel_1 IfcLabel IfcGridAxis_1:AxisTag1->IfcLabel_1:IfcLabel0 IfcIndexedPolyCurve_1 IfcIndexedPolyCurve      LayerAssignment [0:1]      StyledByItem [0:1] 1. Points [1:1] 2. Segments [1:?] 3. SelfIntersect [0:1] IfcGridAxis_1:AxisCurve1->IfcIndexedPolyCurve_1:IfcIndexedPolyCurve0 IfcCircle_1 IfcCircle      LayerAssignment [0:1]      StyledByItem [0:1] 1. Position [1:1] 2. Radius [1:1] IfcGridAxis_1:AxisCurve1->IfcCircle_1:IfcCircle0 IfcBoolean_1 IfcBoolean IfcGridAxis_1:SameSense1->IfcBoolean_1:IfcBoolean0
Figure 4.1.3.1.2.A

General Usage

ApplicableEntity
IfcGrid
Table 4.1.3.1.2.B

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