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Profile conversion logic in IFC object conversion

Last updated September 6, 2017 by Tekla User Assistance tekla.documentation@trimble.com

Software version: 
2017i

Profile conversion logic in IFC object conversion

Profile conversion logic in IFC object conversion

Tekla Structures uses a certain logic in converting profiles in IFCfile format commonly used in BIM that facilitates software interoperability

IFC is an open specification developed by the IAI (International Alliance for Interoperability).

Model can be exported into an IFC file.

object conversion.

Parametric profilepredefined profile whose cross section dimensions the user can change by using parametric variables

used in IFC model, I-, L-, U-, C-, T-, Z-, Rectangle- and Circular type profiles can be defined parametrically:

  1. If IFC file has been created with Tekla Structures, original profile name is used.
  2. If profile with same name is found from Tekla Structures Profile Catalog , it will be used.
  3. Otherwise, Tekla Structures checks parameter values to find a corresponding profile. If found, that will be used.
  4. Otherwise, a default parametric profile is used.

Arbitrary profile used in IFC model, profile shape is defined with polygon:

  1. If IFC file has been created with Tekla Structures, original profile name is used.
  2. If the shape is detected and found from Tekla Structures cataloguser interface for displaying or modifying information in categorized lists

    For example, profile catalog and shape catalog are catalogs.

    , that profile will be used. The shape detection supports the standard types of hot rolled profiles.
  3. Otherwise, a new profile is created based on the description of the arbitrary profile.

B-rep geometry used in IFC model, object is defined with surfaces and profile geometry information is not available:

  1. If corresponding item exists in Tekla Structures model, it is used.
  2. Otherwise, a new item will be created and used.

If Conversion as item is used for extrusion type of part, new item is always created.

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