Roundness of objects displayed in Tekla Structures


Software version: Not version-specific

Last updated January 31, 2021 by Tekla Global Support tekla.structures.ghd@trimble.com

Environment: 
Not environment-specific

Roundness of objects displayed in Tekla Structures

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 Help.

Note: As a limitation of Tekla Structures until version 2017, each object can only support up to 99 points, so if your shapes are too complex or too round, they could exceed the maximum points and break the geometry. In Tekla Structures 2017i onwards, this limit is increased, see Modeling improvements > Increased polygon point limit. The new maximum number of polygon points is 1000 for parts and bolt groups, and 999 for profile cross sections.

Note: You lose performance the smoother your curves are, so find a value that will provide the best balance.

Chamfers on contour plates

XS_CHAMFER_ACCURACY_FACTOR

XS_CHAMFER_ACCURACY_FACTOR=16

XS_CHAMFER_ACCURACY_FACTOR=1

XS_CHAMFER_ACCURACY_FACTOR=16

XS_CHAMFER_ACCURACY_FACTOR=1

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

XS_CHORD_TOLERANCE_FOR_TUBE_SEGMENTS=20

XS_CHORD_TOLERANCE_FOR_TUBE_SEGMENTS=1

Polygon cross section profiles

Polygon cross sectiongeometrical form of a part sectioned perpendicular to its axis

profiles, such as hollow-core slabs, can be complex shapes and could easily reach the 99 point limit in Tekla Structures 2017 and earlier versions, so use caution. In Tekla Structures 2017i and newer versions, the point limit is 999.

XS_CS_CHAMFER_DIVIDE_ANGLE

XS_CS_CHAMFER_DIVIDE_ANGLE=30

XS_CS_CHAMFER_DIVIDE_ANGLE=5

XS_CS_CHAMFER_DIVIDE_ANGLE=1

XS_CS_CHAMFER_DIVIDE_ANGLE=30

XS_CS_CHAMFER_DIVIDE_ANGLE=5

BROKEN! XS_CS_CHAMFER_DIVIDE_ANGLE=1

Polybeams

XS_POLYBEAM_CHORD_TOLERANCE

XS_POLYBEAM_CHORD_TOLERANCE=24

XS_POLYBEAM_CHORD_TOLERANCE=1

XS_POLYBEAM_CHORD_TOLERANCE=24

XS_POLYBEAM_CHORD_TOLERANCE=1

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_ROUND_SEGMENTS (not documented).

XS_ROUND_SEGMENTS=8

XS_ROUND_SEGMENTS=24

XS_ROUND_SEGMENTS=8

XS_ROUND_SEGMENTS=24

Bolt holes

The only way to adjust the roundness of bolt holes is by using "View Properties > Display > Representationthe way that the information included in a model is represented visually

". For Holes, the options are "Fast", "Exact", and "Exact slotted holes".

Adjust the display settings> Display settings

Fast

Exact

Exact slotted holes

Fast

Exact

Exact slotted holes

Tags: 
round bar
too many points in displaypolygon
cannot show all chamfers

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