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Tekla Structural Designer 2017 Service Pack 5

Last updated November 20, 2017 by Tekla Structural Designer Development Team tekla-product-development-tsd-team-ug@trimble.com

Tekla Structural Designer 2017 Service Pack 5

This release will upgrade your Tekla Structural Designer installation to version number and should be installed to ensure optimum function of the program.   It includes a number of enhancements and issue resolutions as detailed below. 

Please note that Tekla Structural Designer 2017i is also now available.  This incorporates a number of new features, enhancements and issue resolutions which it was not possible to include in this Service Pack.  Hence we recommend you consider updating to the 2017i version as soon as is practicable.  See the 2017i Release Notes for more information on this.

If you are upgrading from a version earlier than the most recent Tekla Structural Designer 2017 SP4 (version you can find details of enhancements and fixes included in all previous releases in Tekla User Assistance (TUA) and Tekla Downloads.  You will find all the main releases listed in the Knowledge base area of TUA under Release notes while those for Service Packs can be found under Updates.  Links to release notes together with the version number can also be found in Tekla Downloads (login required).

Licensing & Installation

  • Licensing - no new license is required for this version.
  • Installation - this service pack requires Tekla Structural Designer 2017 to be installed and will upgrade this to version
  • Previous Versions and file compatibility - Files from all previous versions can be opened in Tekla Structural Designer 2017 Service Pack 5 however note that once saved they cannot then be opened in an older version.  If you wish to retain this option we therefore recommend using the File > Save As… option to save a new version of the file and retain the original.
  • 32bit (x86) and 64bit (x64) Versions - Service packs are available for both 32bit (x86) and 64bit (x64) versions of Tekla Structural Designer. Before downloading, check which version you have currently installed via the Information button at the top right of the Tekla Structural Designer window, then download the appropriate service pack.

Issues with Associated Bulletins

  • Concrete Wall Design -  Head Codes BS (all countries ) and Eurocode (all countries) - this issue relates to Imposed Load Reductions and would only occur where these were enabled for one or  more Imposed type load cases.  The concrete wall properties setting for floors to be counted as supported, although active during program operation, was not preserved by saving.  Hence, when a file was closed and reopened, any edited settings would be reset to their original values.  If missed by the engineer, this could produce an unconservative result.  For more information please see Product Bulletin PBTSD-1709-1 (53747).
    • Important note: This is issue is fixed in version 2017i but NOT in this Service Pack.
  • Concrete Wall Design - All Head Codes - Restrained Floors - the concrete wall properties setting for the wall to be considered as restrained at a floor level, although active during program operation, was not preserved by saving.  Hence, when a file was closed and reopened, any edited settings would be reset to their original values.  If missed by the engineer, this could produce an unconservative result.  For more information please see Product Bulletin PBTSD-1709-2 (53748).
    • Important note: This is issue is fixed in version 2017i but NOT in this Service Pack.

Enhancements & Fixes

General & Modelling

  • Review View - Show\Alter State:
    • Fixed\ Pinned Attribute - the end condition of beams in levels set to be identical could be set as different using this command.  Fixed\ Pinned edits made to beams in any such level are now replicated in all other linked identical levels (53708).
    • Auto\Check Design - Concrete Walls were not displayed when the “Show” filter was set to either On or Off.  This occurred regardless of the Autodesign On/Off setting of the walls  (53704)
  • BIM Integration:
    • Structural BIM Import:
      • CXL files containing an excessive number of columns with different top and bottom levels  could fail to import due to the number of construction levels being created by the import.  Construction level creation is adjusted to allow import of such files (14152).
      • Update Existing model  - Importing Revit CXL file - a program error could occur in rare circumstances where model edits in Revit changed the verticality of an existing column being updated in the Tekla Structural Designer model.  The import processes are improved to cater for this circumstance (14249).
      • CXL files produced from Revit from models containing Westok cellular beams in which the Upper and/ or Lower Sections were not correctly defined would cause a program error on import.  This circumstance is now handled - a warning is issued and the beams in question are imported as analysis elements.  To fully address the issue the operator should correct the error in Revit (by adding the required information to the relevant families) and re-export the CXL file (53712).
      • Piles and Pile Caps - for round-tripping of models with isolated pile cap foundations exported to Revit; when the pile diameter (only) was changed in Revit and the model exported and imported into Tekla Structural Designer to update the original model, the orientation of the piles was incorrectly altered (53719).
      • Updating models containing slabs with a CXL file which contained no slabs (exported from Revit), with “Include” for Slabs / Deck checked off in the Integration filter, resulted in existing slabs being deleted (53924).
    • Cellbeam Import - the Westok > Beam Location setting (Floor or Roof) was not preserved when re-importing a Cellbeam file into Tekla Structural Designer to update an existing model (14253).
    • Cellbeam Export - a load error was produced in the Cellbeam program for exported beams that were sloped due to the beam length being set to the projected horizontal length rather than the full length (14254).
  • Gable Posts - an exception could occur when editing models containing gable posts with their Fabrication set to Unknown (14250).
  • Steel Beams - Composite - rarely, composite beam properties were not correctly updated with those of the supported composite slab, resulting in program errors when attempting to edit the properties of such beams.  Where this occurred it could be fixed by editing any of the composite slab Decking properties - then resetting to the original value - which corrected the beam properties.  This workaround is no longer required. (14045).
  • Timber Beams - Glulam - a program error would occur when the fabrication of curved timber beams with incoming members was changed from Glulam to Timber (53697).
  • Construction Levels - a program error would occur when attempting to open the Construction Levels dialog in a model which contained objects but in which no construction levels existed.  This circumstance cannot be produced in normal program operation and may possibly only occur in rare circumstances when importing a model via Structural BIM Import, however the construction levels dialog can now be opened should it occur (53695).
  • Materials - Sections - when adding a new section (of any material), a program error would occur when typing in a property value with the rows sorted by Value (53755).

Analysis & Results

  • Concrete Walls - Mid-Pier - the wall self-weight loads were not updated to reflect changes to Mid-Pier Wall extensions.  This could be worked around by toggling the “Use mid-pier” of the wall.  The workaround is no longer required (53212).



  • Concrete Design:
    • Both Gravity and Static design options could fail to complete for models containing temperature loads applied to concrete beams  (14283).
    • Beams - ACI and IS Design codes - loading results calculated for the end of longitudinal regions were stored with the corresponding position of the start of the region.  Although this did not cause any visible design errors - since it is always the largest value in the region that is required for design - it could render results confusing.  Note that this only affected seismic design (53711).
  • Slab Design - Punching checks - The "Select reinforcement starting from" property changed automatically from "Minima" to "Current" once reinforcement was found to be required for a check after a design.  The “Minima” setting is now retained in this circumstance which is consistent with other design routines in the program (53731).
  • Portal Frames - a program error would occur when checking a portal frame column when Group Design for Steel columns was enabled (Design > Options > Design Groups > Steel Columns checked on).  The workaround - no longer required - was to uncheck this option  (14264).
  • Review Data - Pile Design Summary - access to results was incorrectly greyed out when result type was set to "Static & RSA" (52526).

Head Code BS

  • Steel Design - Interactive buckling check for closed members - the Cl equation  incorrectly omitted a factor of 0.5.  This affected only the displayed equation not the results (53615).

Head Code EC

  • Steel Design - Columns:
    • In some circumstances for columns with a number of intermediate lateral restraints for LTB checks, inappropriate minor axis strut checks were reported for lengths not fully within the major axis LTB strut length (51701).
    • For column stacks with multiple intermediate lateral restraints, the axial load and real moment considered in the combined buckling check for some flange LTB lengths could be incorrectly set to zero.  This would generally be apparent from a “Not Required” status for the length in question (53843, 53900).
    • For the columns of portal frames with a number of intermediate lateral restraints to both flanges, some spurious LTB length checks could be performed (53692).
    • The LTB check design details incorrectly reported Clause instead of as the reference for the reported value of ?LT .  The issue did not affect the calculated value itself (53832).

Head Code US

  • Steel Design - Section Order Lists - a program error could result when editing the Section Order list of a member after the model’s units were changed from Metric to US or vice-versa (53834).

Reports & Drawings

  • Planar Drawings - Slab/Mat Detailing - this drawing would fail to generate for levels that contained one or more steel or timber deck slab panels (14268).
  • Reports - View Configurations - View items with applied view configurations  of saved Results View deflection diagrams did not correctly display the deflected shape (14053, 14241).


The number in brackets after an item denotes an internal reference number.  This can be quoted to your local Support Department should further information on an item be required.

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