ISO 10303-55-2005 cor1-2005 PDF

Full title and description

ISO 10303-55:2005 — Industrial automation systems and integration — Product data representation and exchange — Part 55: Integrated generic resource: Procedural and hybrid representation. This entry also covers the Technical Corrigendum 1 published in 2005 (ISO 10303-55:2005/Cor 1:2005).

Abstract

Defines resource constructs for representing procedural (construction-history) and hybrid models in the STEP (ISO 10303) framework — i.e., models described by sequences of constructional operations, hierarchical construction sequences, embedding explicit elements into procedural sequences (hybrid models), dual (procedural + explicit current-result) representations, and association of design rationale and selectable/suppressible construction operations.

General information

• Status: Published; confirmed current by ISO during periodic review.
• Publication date: ISO 10303-55:2005 — February 2005; ISO 10303-55:2005/Cor 1:2005 (Technical Corrigendum 1) — May 2005 (published 2005-05 / shown as 2005-06-02 in some catalogues).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control / Product data representation and exchange).
• Edition / version: Edition 1 (2005); Technical Corrigendum 1 (Cor 1:2005).
• Number of pages: Main part — 48 pages; Corrigendum 1 — 1 page.

Scope

Specifies general mechanisms (resource constructs and schemas) for representing models defined by constructional operations (procedural models) and for combining procedural and explicit representations (hybrid models). It supports representation-item reuse from other ISO 10303 parts, hierarchical construction sequences, dual representations (procedural + current-result explicit model), selection/picking of explicit elements, suppression of construction steps for simplification, and procedural specialization for shape models. The corrigendum issues minor technical corrections to the published 2005 text.

Key topics and requirements

• Procedural model schema — definitions to represent sequences of constructional operations and their hierarchy.
• Procedural shape model schema — mechanisms for procedural representation of geometric/shape information.
• Hybrid representation support — embedding explicit geometry within procedural sequences and maintaining a "current result" explicit model associated with a procedural description.
• Interoperability with other ISO 10303 parts — use of representation_item entity types defined elsewhere in the STEP family.
• Metadata support — association of design rationale and identification of elements selected by interactive picking.
• Model simplification features — marking constructional operations as suppressible for simplified views or data exchange.
• Corrigendum details — small technical corrections to the original 2005 publication (1 page corrigendum).

Typical use and users

Used by CAD/CAE/CAM software developers, PLM and PDM integrators, system integrators, and organizations exchanging complex product and shape models where editability/design intent must be preserved across systems. It is typically applied in contexts that require representation of construction histories, parametric procedural definitions, hybrid procedural/explicit models, and STEP-based interchange solutions.

Related standards

Part of the ISO 10303 (STEP) family. Related parts and resources include other integrated generic resources and application protocols (for example various ISO 10303 parts addressing explicit geometry, shape representation, EXPRESS language references, and file encodings such as Part 21). The STEP Module and Resource Library (SMRL) and other ISO 10303 integrated resources are commonly referenced alongside Part 55.

Keywords

STEP, ISO 10303, procedural representation, hybrid model, construction history, procedural shape model, product data exchange, design intent, parametric model, corrigendum.

FAQ

Q: What is this standard?

A: ISO 10303-55:2005 is a part of the STEP family that defines resource constructs for procedural and hybrid product-model representations; ISO issued a one-page Technical Corrigendum (Cor 1:2005) to correct technical items in the original 2005 publication.

Q: What does it cover?

A: It covers schemas and mechanisms to represent models by sequences of constructional operations (procedural models), to combine procedural and explicit representations (hybrid), to associate a procedural model with an explicit "current result", and to attach design rationale and selection/suppression metadata.

Q: Who typically uses it?

A: CAD/CAM/CAE software vendors, PLM/PDM integrators, systems engineers, and organisations exchanging editable product models where preserving construction history or parametric intent is important.

Q: Is it current or superseded?

A: The Part 55 document and its Corrigendum 1 (2005) are published and remain the published edition; ISO’s catalogue indicates the standard has been subject to periodic review and the published version was confirmed through ISO’s review process (ISO listing shows confirmation activity as recent as 2025). For authoritative current lifecycle status always check ISO’s catalogue entry.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 10303 (STEP) series of standards for product data representation and exchange; Part 55 is an integrated generic resource focusing on procedural/hybrid representation and is referenced by other STEP parts and application protocols.

Q: What are the key keywords?

A: Procedural model, hybrid model, construction history, STEP, ISO 10303, procedural shape model, design intent, product data exchange, corrigendum.