IfcPreDefinedDimensionSymbol

Definition from IAI: The pre defined dimension symbol is a pre defined symbol for the purpose to identify a dimension symbol by name. Allowable names are:

- 'arc length',
- 'conical taper',
- 'counterbore',
- 'countersink',
- 'depth',
- 'diameter',
- 'plus minus',
- 'slope',
- 'spherical diameter',
- 'spherical radius',
- 'square'

> NOTE: The IfcPreDefinedDimensionSymbol is an entity that had been adopted from ISO 10303, Industrial automation systems and integration—Product data representation and exchange, Part 202: Application protocol: Associative draughting.

> NOTE Corresponding STEP name: pre_defined_dimension_symbol. Please refer to ISO/IS 10303-202:1994 page 201 for the final definition of the formal standard.

> HISTORY New entity in Release IFC2x 2nd Edition.

Illustration from ISO 10303-202, page 203:

EXPRESS specification:

ENTITY IfcPreDefinedDimensionSymbol
SUBTYPE OF ( | IfcPreDefinedSymbol);
WHERE
WR31 | : | SELF\IfcPreDefinedItem.Name IN ['arc length','conical taper','counterbore', 'countersink','depth','diameter','plus minus','radius', 'slope','spherical diameter','spherical radius','square'];
END_ENTITY;

Inheritance graph

ENTITY IfcPreDefinedDimensionSymbol;
ENTITY IfcPreDefinedItem;
Name | : | IfcLabel;
ENTITY IfcPreDefinedSymbol;
ENTITY IfcPreDefinedDimensionSymbol;
END_ENTITY;