Roundness of objects displayed in Tekla Structures
Not version-specific
Tekla Structures
Environment
Not environment-specific
This is a quick guide to controlling the roundness of objects in Tekla Structures. Most scenarios are more complex and involve a combination of several variables. For a more in-depth understanding of how each of these variables works, see Tekla Structures product guides.
Max number of polygon points
The maximum number of polygon points is 1000 for parts and bolt groups, and 999 for profile cross sections for Tekla Structures 2017i and newer versions. For older versions the limit was 99 points, so it was more common that too complex or too round shapes could exceed the maximum points and break the geometry.
Note: You lose performance the smoother your curves are, so find a value that will provide the best balance between accuracy and performance.
Chamfers on contour plates
| XS_CHAMFER_ACCURACY_FACTOR=16 | XS_CHAMFER_ACCURACY_FACTOR=1 |
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Round sections
If the diameter of your round section is smaller than the value set in XS_CHORD_TOLERANCE_SMALL_TUBE_SIZE_LIMIT, then XS_CHORD_TOLERANCE_FOR_SMALL_TUBE_SEGMENTS will be used instead.
XS_CHORD_TOLERANCE_FOR_TUBE_SEGMENTS
| XS_CHORD_TOLERANCE_FOR_ TUBE_SEGMENTS=20 | XS_CHORD_TOLERANCE_FOR_ TUBE_SEGMENTS=1 |
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Polygon cross section profiles
| XS_CS_CHAMFER_ DIVIDE_ANGLE=30 | XS_CS_CHAMFER_ DIVIDE_ANGLE=5 | XS_CS_CHAMFER_ DIVIDE_ANGLE=1 |
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The images above are from Tekla Structures 2017 version, where geometry was more easily broken, because of the 99 cross-section points limitation. In newer versions this seldomly happens, because the limit has been increased to 999 cross-section points.
Polybeams
| XS_POLYBEAM_CHORD_ TOLERANCE=24 | XS_POLYBEAM_CHORD_ TOLERANCE=1 |
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Variable profiles from sketch editor
Variable profiles can be created with fixed segments or with radiused curves. If your profile is created with fixed segments, there is no way to adjust the roundness. If created with radiused curves, then the following can be applied.
| XS_CS_CHAMFER_DIVIDE_ANGLE=45 | XS_CS_CHAMFER_DIVIDE_ANGLE=15 |
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Bolt holes
The only way to adjust the roundness of bolt holes is by using "View Properties > Display > Representation". For Holes, the options are "Fast", "Exact", and "Exact slotted holes".
Adjust the display settings > Display settings
| Fast | Exact | Exact slotted holes |
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Reinforcing bars
Reinforcing bars have 16 segments and the accuracy of their cross-section cannot be adjusted. The "View Properties > Display > Representation" settings "Fast" and "Exact" affects only the reinforcing bar meshes, but for example single rebars and rebar groups are always shown as solid objects.
| FAST | EXACT |
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