ISO 14306-1:2024
(Main)Industrial automation systems and integration - JT file format specification for 3D visualization - Part 1: Overview and fundamental principles
Industrial automation systems and integration - JT file format specification for 3D visualization - Part 1: Overview and fundamental principles
This document provides an overview and defines the purpose and fundamental principles of the ISO 14306 series as well as the structure of the various parts within the series and an overview of the conformance for files created consistent with the standard. The ISO 14306 series defines a binary file format description that is a representation of product information with the definitions necessary to enable 3D visualization among different computer systems and environments associated with a complete product lifecycle.
Systèmes d'automatisation industrielle et intégration — Spécification de format de fichier JT pour visualisation 3D — Partie 1: Aperçu et principes fondamentaux
General Information
Relations
Overview
ISO 14306-1:2024 - part of the ISO 14306 series - defines the JT file format specification for 3D visualization. This Part 1 document provides an overview and the fundamental principles for the series, describing the purpose, structure and conformance model for a binary file format that represents product information to enable interoperable 3D visualization across different systems and throughout the product lifecycle. The JT file format commonly uses the .jt file extension and targets lightweight, compressed representations of CAD data while optionally carrying precise geometry and product/manufacturing information (PMI).
Key topics and technical requirements
- Binary file format description for product information intended for 3D visualization and reuse.
- File structure requirements:
- Mandatory segments: File header → Table of contents → Data segments (including Logical Scene Graph, Shape LOD, metadata).
- At least one and no more than ten Shape LOD segments.
- First segment after the header must be the table of contents; no more than one occurrence of each individual data segment.
- Geometry representations:
- Faceted geometry (triangles) with geometry compression for efficient storage and streaming.
- Optional precise geometry (boundary representation / b‑rep) defined in the relevant part of the series.
- Precise geometry guidance: use explicit definitions (e.g., NURBS), procedural definitions permitted, non‑manifold bodies not allowed.
- Visual attributes supported: lights, textures, materials, layers and filters, and PMI associated with parts and assemblies.
- Conformance model: conformance classes are defined in the respective parts of the series to support verification and testing of implementations.
- Streaming and performance: format design supports asynchronous streaming, occlusion culling and fixed‑frame display patterns for high‑performance viewers.
Applications
- Lightweight exchange of 3D models for visualization, review, collaboration and validation across the supply chain.
- Product Lifecycle Management (PLM) and CAD-to-viewer workflows where smaller, portable 3D assets are required.
- Manufacturing and service operations that consume PMI, assembly structure and configuration data without needing full CAD authorship files.
- Web and enterprise viewers requiring streaming, level-of-detail (LOD) handling and fast rendering.
Who should use this standard
- CAD and PLM vendors, visualization software developers, data exchange integrators, OEMs, suppliers, and manufacturing/maintenance teams seeking interoperable 3D visualization and standardized JT file handling.
Related standards
- ISO 14306 (other parts) - JT series parts for vocabulary, precise geometry formats and conformance classes.
- ISO 10303 (STEP) - complementary product data exchange standards.
- ISO/IEC 8824-1 - ASN.1 reference used for information object registration identifiers.
Standards Content (Sample)
International
Standard
ISO 14306-1
First edition
Industrial automation systems
2024-08
and integration — JT file format
specification for 3D visualization —
Part 1:
Overview and fundamental
principles
Systèmes d'automatisation industrielle et integration —
Spécification de format de fichier JT pour visualisation 3D. —
Partie 1: Aperçu et Principes Fondamentaux
Reference number
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
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Email: copyright@iso.org
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Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 1
3.1 Terms and definitions .1
3.2 Abbreviated terms .1
4 Overview of the ISO 14306 series . 2
4.1 Overview of the purpose of the ISO 14306 series .2
4.2 Overview of the scope of the ISO 14306 series .2
4.3 Fundamental principles of the ISO 14306 series .2
4.4 Structure of the ISO 14306 series .2
5 Conformance . 3
5.1 Conformance classes .3
5.2 General file structure .3
5.3 Precise geometry .3
Annex A (normative) Information object registration. 4
Bibliography . 5
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 184, Automation systems and integration,
Subcommittee SC 4, Industrial data.
A list of all parts in the ISO 14306 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
The ISO 14306 series describes a file format which is used in industry for the representation of computer-
interpretable 3D product data. The objective of the industrial user when using data contained in the format
described in the ISO 14306 format is 3D visualization to enable collaboration, validation and information
sharing throughout the extended enterprise.
The file format description is flexible in design focusing on compression for compact and efficient 3D data
representations. Computer Aided Design (CAD) models, represented as data according to the ISO 14306
format are significantly smaller than the size of the original authored CAD data. Software applications that
use this description focus on workflows requiring high-performance, both capturing and repurposing of
lightweight 3D data that includes content such as product assembly structure and
...
Frequently Asked Questions
ISO 14306-1:2024 is a standard published by the International Organization for Standardization (ISO). Its full title is "Industrial automation systems and integration - JT file format specification for 3D visualization - Part 1: Overview and fundamental principles". This standard covers: This document provides an overview and defines the purpose and fundamental principles of the ISO 14306 series as well as the structure of the various parts within the series and an overview of the conformance for files created consistent with the standard. The ISO 14306 series defines a binary file format description that is a representation of product information with the definitions necessary to enable 3D visualization among different computer systems and environments associated with a complete product lifecycle.
This document provides an overview and defines the purpose and fundamental principles of the ISO 14306 series as well as the structure of the various parts within the series and an overview of the conformance for files created consistent with the standard. The ISO 14306 series defines a binary file format description that is a representation of product information with the definitions necessary to enable 3D visualization among different computer systems and environments associated with a complete product lifecycle.
ISO 14306-1:2024 is classified under the following ICS (International Classification for Standards) categories: 25.040.01 - Industrial automation systems in general. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO 14306-1:2024 has the following relationships with other standards: It is inter standard links to ISO 14306:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase ISO 14306-1:2024 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of ISO standards.








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