![type grid type grid](https://cdn.idevie.com/wp-content/uploads/2013/08/typeandgrids_12.png)
For some subtypes of IfcRoot the insertion of the Name attribute may be required. Optional name for use by the participating software systems or users. IFC4 CHANGE The attribute has been changed to be OPTIONAL. NOTE only the last modification in stored - either as addition, deletion or modification. Inherited definitions from supertypes Entity inheritance Attribute inheritance #Īssignment of a globally unique identifier within the entire software world.Īssignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object, Predefined types to define the particular type of the grid. It may be given in the case of a triangular grid. List of grid axes defining the third row of grid lines. List of grid axes defining the second row of grid lines. List of grid axes defining the first row of grid lines. Resolved by splitting one grid axis in a way, such as NOTE Left side: ambiguous intersections A1 andĪ2, a grid containing such grid axes is not a validĭesign grid Right side: the conflict can be Two grid axes which intersect twice (see Figure 189). Grid axes should be defined such as there are no.Of axes (UAxes, VAxes, WAxes) shall not be parallel. Grid axes, which are referenced in different lists.IFC4 CHANGE The attribute PredefinedType hasīeen added at the end of the attribute list. Those elements to which project objects will be placed NOTE The grid axes, defined within the design grid, are Instantiation of IfcGridAxis's has to agree to the NOTE The PredefinedType denotes the type of Layout as shown in Figure 161, or a triangular layout as shown in Figure 162. The following figures shows some examples.Ī grid may support a rectangular layout as shown in Figure 160, a radial Two, or (in case of a triangular grid) three lists of gridĪxes. The inherited attributes Name and DescriptionĬan be used to define a descriptive name of the grid and to Which are 2D curves (for example, line, circle, arc, The 3D coordinate system is used to place the grid axes, Object placement of other products or grids. Used in plan, section or in any position relative to the The position of the grid ( ObjectPlacement) is definedīy a 3D coordinate system (and thereby the design grid can be Used as an aid in locating structural and design elements.
![type grid type grid](https://i.stack.imgur.com/3QNpY.jpg)
IfcGrid ia a planar design grid defined in 3D space Semantic definitions at the entity Entity definition