Brace properties
Brace properties
General | |
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Name | The automatically generated name. |
User Name | Can be used to override the automatically generated name if required. |
Group | The name of the group to which the member belongs. |
Plane | Indicates the level or frame within which the member is placed. |
Characteristic | Brace |
Active | Clearing this option makes the brace inactive in the analysis. See: Inactive members |
Material type |
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Construction, Fabrication |
The available construction and fabrication options depend on the characteristic and material type selected, see Member characteristic, construction and fabrication properties |
Autodesign | |
Design section order (steel only) |
The design order file from which a section size will be selected. Note: Only displayed for Autodesign
For details of managing order files, see: Manage design section orders |
Rotation |
Rotation of the member about its local x axis. |
Alignment | |
Global offset end 1, end 2 |
Can be used to model a physical offset with respect to the global axes at one or both ends of the member, (exceptions apply). |
Major snap level, Minor snap level |
Defines the major and minor alignment of the member relative to the insertion point. |
Major offset, Minor offset |
Used to offset the member from the snap point in the major and minor axis. |
All spans | |
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Section | The section size |
Grade | The material grade |
Connection |
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Compression only, Tension only |
Specify if the brace is compression only, or tension only. Note: Tension only and Compression only members are non-linear elements and therefore require non-linear analysis. If linear analysis is performed they will be treated as linear elements
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Relaxation factor | Only displayed if the brace is tension only (default 0.0). Any value entered is not used unless you also check the ‘Use relaxation factors for tension only elements’ box in Analysis Options. Note: It is highly unlikely that you would ever need to set a specific release factor for an individual brace.
See 1st order non-linear settings in: Analysis Settings |
Releases | |
Fixity end 1, end 2 |
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Torsional load release end 1, end 2 |
Check one end only to define a torsional release. |
Vertical load release end 1, end 2 |
A vertical load release can be applied to the end of a V or A type brace pair so that they don’t prop other members against gravity loads, (you are prevented from releasing single braces, or other brace pairs in this way). |
Include force in eccentricity moment end 1, end 2 |
Eccentricity moments in steel and precast columns as a result of beam connection eccentricities do not also consider the brace connection eccentricities unless this property is checked for the appropriate end of the brace.
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Load reductions | |
KLL (Head Code ACI/AISC) |
Specify the KLL factor in accordance with Table 4-2 in ASCE7-05/ASCE7-10. |
Reduce imposed loads by (All other Head Codes) |
Although the percentage of imposed load reduction is not determined automatically, this property allows you to specify the percentage manually.
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Compression | |
Effectve length factor y-y, z-z |
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Tension | |
Net area | Specified as an effective net area or a percentage value. |
Size constraints (steel only) | |
Max depth, Min depth, Max width, Min width |
Size Constraints are only applicable when Autodesign is checked. They allow you to ensure that the sections that Tekla Structural Designer proposes match any particular size constraints you may have. |
Seismic | |
In a seismic force resisting system | If this is the case, select the check box, and then specify the SFRS direction and type. Note: Design of members in seismic force resisting systems is only supported for the ACI/AISC Head Code in the current release.
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Utilization ratio | |
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Apply (to autodesign) | On
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Apply (to check) | On
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Ratio limit | The utilization ratio against which the autodesign or check is performed (when applied above). |
UDA | |
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Name Finish Class Phase Note File |
A customizable list of the attributes that can be applied to individual members and panels. |