The official Siemens reference specification for the JT Version 10.0 file format, including file structure, geometry, metadata, compression, encoding, and implementation details.
The JT File Format Reference Version 10.0 Rev-C documents the binary structure and technical conventions of the Siemens JT file format used for lightweight 3D product and engineering data. It covers file headers, table-of-contents and data segments, scene graph structures, shape and precise geometry, wireframe data, metadata, product manufacturing information, compression and encoding algorithms, common data conventions, and implementation annexes.
The reference includes detailed field descriptions, data collection diagrams, object type identifiers, hashing and coding algorithms, polygon mesh topology coding, XT B-Rep data, JT ULP data, procedural geometry evaluation, and PMI properties. It is intended for software developers and engineering teams implementing JT readers, writers, translators, validation tools, or interoperability workflows.
Application Scope: JT file format implementation, 3D CAD interoperability, product lifecycle management, engineering data exchange, visualization software, geometry translation, and PMI processing.
