ISO 10303-214:2010(E)

4.1.18 item_property (PR1)

This unit of functionality specifies various properties for product data like parts, documents, activities and process plan data.

It contains two concepts for assigning properties to product data: the simple property concept and the independent property concept (see also figure G.27).

Table 2 expresses the correspondence between the simple property concept and the independent property concept.

Table 2 — Mapping table syntax (see clause 5.1 for explanation) used to express the correspondence between the two property concepts

Simple property concept
Independent property concept
simple_property_association
property_value_association <=
(item_property_association)
(process_property_association)
.value_type

property_value_association
property_value_association.describing_property_value ->
property_value_representation
property_value_representation.description ->
property ->
{property.id = '/NULL'}
general_property
general_property.property_type

.specified_value

property_value_association
property_value_association.describing_property_value ->
property_value_representation
property_value_representation.specified_value ->
property_value

.described_element

property_value_association <=
(item_property_association
item_property_association.described_element)
(process_property_association
process_property_association.described_element)

In addition, the independent property concept specifies various predefined properties, such as material, cost, recyclability,quality, or mass.

The information about recyclability is required to describe whether and how material or component parts may be reused. The costs, as planned or calculated for a part, as well as a quality measure property to keep track of the results of some processes, e.g., prototype building, may be specified. The mass is required to express the weight of a part. Shape related properties that are rotation and translation invariant such as the centre of mass and the moments of inertia may also be specified.

The general properties are required to define property data which are not covered by one of the predefined properties, and, due to their variety, cannot be specified all by explicit application objects.

EXAMPLE Noise development of an engine, maintenance intervals of parts, and heat or noise absorption of insulating parts between the engine and passenger compartment are examples for general properties.

Shape related properties that are rotation and translation invariant such as the centre of mass and the moments of inertia may also be specified.

The following application objects are used by the item_property UoF:



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