Use this advanced option to define the chord tolerance for round tubes larger than the limit set by the advanced option XS_CHORD_TOLERANCE_SMALL_TUBE_SIZE_LIMIT. Enter the value in millimeters. The default value is 1.0.
Re-open the model to activate the new value.
Chord tolerance is the maximum difference between a straight segment used to display a tubular section in model views and the actual tubular section:
Do not change the chord tolerance settings during a project. Changing them automatically recreates the tubular sections in the model when you restart Tekla Structures , resulting in slightly different solid objects, which may affect numberingprocess of assigning position numbers to parts, cast units, assemblies, or reinforcement
In Tekla Structures, the position numbers assigned in the numbering are shown in marks and templates, for example.