Documentation or specification for .step and .stp files

step stp
user2479356 picture user2479356 · Nov 6, 2014 · Viewed 9.6k times · Source

I am looking for some kind of specification, documentation, explanation, etc. for .stp/.step files. It's more about what information each line contains instead of a general information.

I can't seem to figure out what each value means all by myself. Does anyone know some good readings about STEP files?

I already searched google but all I got were information about the general structure instead of each particular value.

Answer

rochb picture rochb · Nov 7, 2014

The structure of STEP-File, i.e. the grammar and the logic behind how the file is organized is described in the standard ISO 10303-21.

ISO 10303 or STEP is divided into Application Protocols (AP). Each AP defines a schema written in EXPRESS. The schemas are available on the Internet: the CAX-IF provides some, STEPtools has some good HTML documentations.

The reference of the AP schemas is hosted on stepmod.

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