Tekla Structural Designer 2017i Service Pack 5

Last updated May 1, 2018 by Tekla Structural Designer Development Team tekla-product-development-tsd-team-ug@trimble.com

Tekla Structural Designer 2017i 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 significant new features together with several enhancements and issue resolutions as detailed below. 

If you are upgrading from a version earlier than Tekla Structural Designer 2017i SP4 (version you can find details of enhancements and fixes included in all previous releases in Tekla User Assistance (TUA) and Tekla Downloads via the links below:

Licensing & Installation

  • Licensing - no new license is required for this version.
  • Installation - this service pack requires Tekla Structural Designer 2017i to be installed and will upgrade this to version
    • Previous Versions and file compatibility - Files from all previous versions can be opened in this release 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

  • Steel Design - Braces - BS Head Code - for braces subject to tension using double-angle sections, the tension capacity check used the gross area Ag of the brace, rather than the net area Ae , potentially producing an unconservative design result.  This issue relates only to  Tekla Structural Designer 2017i (version released in Sept 2017) and subsequent releases.  For more information please see Product Bulletin PBTSD-1803-1 (54881).
    • The issue is fixed in this version.

Fixes & Enhancements

General & Modelling

  • Performance and Stability - a number of fixes and enhancements are made to improve general program stability and performance.
  • Grid Lines - user-defined grid line User names and original unique numbers were not retained when a grid line was moved to another Architectural grid system by editing its “Grid” property (14692).
  • Sections - Plated Sections - a number of improvements are made to the definition of plated sections:
    • Previously it was not possible to select a plate of less than 150mm in breadth for the top or bottom flange of a plated I-section beam (14702).
  • The manner of definition for Plated Beam and Column sections reverts to that prior to 2017i - the overall section depth can now again be manually entered as any value rather than being selected from a drop-down list of fixed plate sizes in the database (54404).
  • Sloping Members - Size - the correct physical length, rather the the projected horizontal length, is now shown in the Properties > Size page for inclined members of all types (14756).
  • BIM Integration - Cellbeam Export:
    • In some circumstances for curved beams supported purlin reaction loads were not exported to Cellbeam (14698).
  • For the circumstance of loads applied by other means (such as a connected column) a warning is added on export that (in addition to directly applied loads) only reactions from supported transverse beams are considered (14651).
  • In some circumstances an incorrect error “The top tee is cut from an unsupported section” could occur (14849).
  • Concrete Walls - Meshed Walls - this issue relates only to version 2017 ( in March 2017), in which it was introduced, and subsequent releases.  Where beams connected to a wall between levels the beam analysis elements were not correctly connected to and supported by the wall mesh elements.  A workaround was to create a construction level at the wall and beam intersection point - this is no longer required (14772).
  • Edit - Rationalize - the command did not correctly differentiate between grid and construction lines, thus (unused) grid lines would still be removed when only the Construction Lines option was checked on and the command run (14618).


  • Snow Wizard - US Head Code - for snow drift loads, the upper and lower roof lengths were incorrectly transposed in the calculations for the windward and leeward drift heights (14742).
  • Seismic Wizard Loading - ELF - for a specific and relatively rare circumstance - where columns or parapet posts were stacked on a column at a node to which braces also connected - the static seismic forces could be applied opposite to the correct direction.  Where this occurred it would be apparent from a review of the Seismic forces and could be worked around by using a vertical beam instead of a column or parapet post.  The workaround is no longer required (14793).
  • Load Decomposition - Area and Patch Loads - in some circumstances, for loads applied to roof panels in inclined planes, area and varying patch loads would fail to decompose correctly.  Where this occurred a warning that applied loads and reactions did not balance would be issued in the Process Window , and errors would be shown for the affected load case(s) in the Project Workspace >  Loading check window (14824, 14861).
  • Load Combinations - Generator - Eurocode - for both the Singapore and Malaysia Eurocode NA's, the values of the accompanying wind load factors ?0 and ?1 are corrected from 0.6 and 0.5 respectively to 0.5 and 0.2 .  The associated Help topic table for psi factors is also updated accordindly (14768).



  • Slab Design - Punching checks - in some circumstances, for checks applied to column drop locations, the column drop was not correctly identified and the appropriate punching check setting activated.  This could be worked around as follows; shorten column via the "Top level" property and then extend it back to the original level.  The workaround is no longer required (14900).
  • Steel Design - Beams - Web Openings  - Eurocode and BS Head Codes - Steel and Composite - for multiple openings, a Beyond Scope design status could occur for some openings when all openings were not defined in order of their distance from the start of the beam.  This could be worked around by clicking the “Sort” button on the Web openings page of beam properties.  Openings are now automatically sorted during the design process so the error no longer occurs and the work around is no longer required (14449).

Head Code BS

  • Steel Design - Gable Posts - a design error could occur for the combined buckling check producing a NaN error in design details (54818).

Head Code EC

  • Composite Beam Design:
    • Deflection - the Post Composite deflection values reported as the “Design Value”, in the design summary table, and the “Deflection with partial shear connection” in the check details are now consistent (14759).
    • Web Openings - for beams with web openings with stiffeners, an incorrect overall design status could be displayed in the Review view when opening stiffener checks were failing.  Correct results and status were displayed in design details (14788).

Head Code US

  • Steel Design -  Beams - for plated and rolled section beam design the correct critical combination results were not always displayed for the combined forces check when the design details summary table entry for this check was expanded (54911).
  • Steel Seismic Design :
    • Beams and Columns - for beams and columns forming part of an SFRS, the brace and beam capacity values used in the beam or column design were incorrectly multiplied by the redundancy factor ? (set in the SFRS page of the Seismic wizard) producing an over conservative result (14750, 14777).
    • Braces - Seismic Strength - for braces forming part of an SCBF, clause F2.5b(3) of AISC 341  was incorrectly always applied resulting in all HSS sizes failing the check.  The check is now correctly omitted (as per the Help Documentation) when the brace effective area Ae = the gross area Ag (which is always the case for HSS’s) or the User percentage = 100% (i.e. no reduction is made in the section) (14755).

Reports & Drawings

  • Reports - Member Design - member user names (set via the Properties Window > Name > User name option) are now used for individual member design tables in the Member design reports (14625).
  • Drawing Management - Foundation Reactions - when creating a foundations reaction drawing for selected load combinations, it was not possible to exclude results for the constituent load cases of the combinations (54624).


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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