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 UsageTable 4.1.7.4.1.B