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Tekla Structural Designer 2026 SP1

Tekla Structural Designer
Modifié: 30 avr 2026
2026
Tekla Structural Designer

Tekla Structural Designer 2026 SP1

The latest Tekla Structural Designer service pack is available in Trimble Downloads.

Download Tekla Structural Designer

This release will update your Tekla Structural Designer installation to version number 26.1.0.75 and should be installed to ensure optimum function of the program. It includes a number of new features, enhancements and issue resolutions as detailed below.

If you are upgrading from a version earlier than the immediately prior release of 2026 first release (version 26.0.1.41 released March 2026), you can find details of enhancements and fixes for previous releases in Tekla User Assistance (TUA) via the link below:

Licensing and installation

Licensing

  • No new license is required for this version.

  • Client License Service Version - no update is required for this release.

  • License Server Version - this relates only to perpetual licenses and the Server (Sentinel RMS) license method. We strongly recommend version 7.0 of the license server which can be obtained from Trimble Downloads.

Installation

  • This service pack requires Tekla Structural Designer 2026 first release to be installed and will update your current 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 a previous release. If you wish to retain this option we therefore recommend using the File > Save As… option to save a copy of the file in the previous release and retain the original.

Integration

  • Tekla Structures - if you wish to integrate with Tekla Structures you should install both this release and Tekla Structures 2026. These can be obtained from Trimble Downloads.

  • Tekla Portal Frame and Connection Designer - if you install this release and use Tekla Portal Frame Designer and/or Tekla Connection Designer you should have installed Tekla Portal Frame Designer 26 and/or Tekla Connection Designer 26 available from Trimble Downloads.

  • Tekla Tedds - for integrated design using Tekla Tedds you should install Tekla Tedds 2026 AND ensure you have installed the latest updates for this. These can be obtained from Trimble Downloads.

  • Autodesk Revit© - the most recent Tekla Structural Designer Integrator for Autodesk Revit© 2026 was released in March 2026. For more information about this see the Tekla Structural Designer Integrator for Autodesk Revit 2026© SP1 Release Notes. The installation for this is available in Trimble Downloads. If you are now using Autodesk Revit© 2026, you can install this to perform BIM integration with Tekla Structural Designer.

Issues with associated bulletins

  • [TSD-18897] - Propped portal in TSD not modeled correctly

    This issue relates to the modelling of the releases at the top of prop columns in propped portal frames and can lead to unexpected force and moment distributions in these frames in Tekla Structural Designer.

    For more information please see Product Bulletin PBTSD-2601-1.

    • This issue is fixed in this release.

Enhancements and fixes

General & modeling

  • General performance and stability improvements

    This release includes several additional fixes, not explicitly detailed here, that enhance overall performance and stability. An example of this type of fix is given directly below:

    • [TSD-19441] - “The File Cannot be Read” error on opening portal frame model

      In the initial Tekla Structural Designer 2026 release, if a user modified portal frame supports using the Properties Window instead of the Bases page of the Portal Frame dialog the file could become corrupted. An error message stating "The File Cannot be Read" would then appear when attempting to reopen the file. This issue has been fixed.

  • [TSD-19054] - Results text threshold slider

    A slider has been introduced in the Results ribbon for filtering the values displayed for 1D member deflections, 1D member forces, and support reactions.

    By default (slider positioned fully to the left), all selected result values are displayed. As shown below, moving the slider to the right increases the threshold, filtering out values below it. When the slider is at the far right, only the extreme positive and negative values are displayed.

  • [TSD-18868] - Wind wall parapets

    A new wind panel type, Parapet Extension, has been introduced to simplify the modeling and decomposition of wind loads on wall parapets.

    What's Improved:

    • You can now place a rectangular or polygonal Parapet Extension directly above an existing wall panel. Since these are fixed at a 90-degree rotation, wind loads are always decomposed vertically down to the supporting members. This eliminates the need for parapet posts or other members at the sides of the extension.

    • The new panel type offers a solution for scenarios where the existing Parapet type is inadequate. While the Parapet type is effective for rectangular parapets, such as those decomposing load horizontally to parapet posts or extended columns, it becomes problematic in situations with sloped edges, or non-horizontal decomposition directions when the panel is not supported on all edges.

    How to Use:

    Parapet extensions can be defined using four methods:

    • Horizontal level

    • Two levels for a sloping parapet

    • Vertical end offsets at either end

    • Perpendicular offset to the wall top

    To create a parapet extension:

    1. On the Model ribbon, select Parapet Extension from the Wall Panel dropdown.

    2. In the Properties window, select the top level method appropriate to your situation.

    3. In the Properties window, define the levels or offsets.

    4. Pick the existing wall panel to add the extension to.

    5. The parapet extension is created as a new wall panel. If you run the Wind Wizard, it will be treated in the same way as the existing parapets.

    To find out more see the Create wall panel parapet extensions and Wall panel load decomposition topics in the Product Guide.

  • [TSD-19513] - Enhanced Loading dialog

    The Loading dialog has been enhanced to improve performance, particularly in models with numerous loadcases or combinations. This update substantially reduces the display time for the dialog.

    As part of this update, some command buttons have been repositioned within the table.

    • The Add button is now located at the bottom of the table.

    • The Copy and Delete buttons have been relocated to the right of each row in the table.

  • [TSD-19410] - Allow analysis element to be selected in show alter view for the attribute Releases

    In a Review View, the Show/Alter State > Releases command now includes 'Analysis Element' in its list of available variants. This enhancement enables users to graphically review and set releases for Analysis Elements.

  • [TSD-18401] - Add precast L and T shaped beams for the US regional code

    Previously, when modeling precast concrete beams to the US regional code, only rectangular sections were supported. The following additional section shapes are now available:

    • L-Section

    • Inverted L-Section

    • T-Section

    • Inverted T-Section

    While the new shapes cannot currently be designed, you can model them for BIM and Material Listing purposes.

Interoperability

  • Remoting API

    There are no enhancements to the Open API in this release. The latest Remoting API version is 26.0.1.

    For more information see the Tekla Structural Designer 2026 Open API Release Notes.

  • [TSD-19462] - Crash when exporting connections to IDEA StatiCa Checkbot

    After launching Checkbot from Tekla Structural Designer 2026 and clicking on the Connections button an error was encountered halting the process. This issue is now fixed in Tekla Structural Designer 2026 SP1.

    Note also that IDEA StatiCa have changed how Checkbot interprets Tekla Structural Designer global offsets and minor snap lines. The updated Checkbot guidance for connection noding is as follows:

    1. Selecting the option ‘Top of steel (incl. offsets)’ will ensure that all of the beams connecting at a joint will have the top of the top flange aligned. This will mean that when exported to IDEA StatiCa, each beam center line will connect to the node at an offset, ez, of half the beam depth.

    2. Selecting the option ‘Member center line (only)’ will ensure that all of the beams connecting at a joint will have no offset. This will mean that when exported to IDEA StatiCa, each beam center line will connect to the node at zero, ez, offset.

    3. Tekla Structural Designer only considers the major alignment of the member relative to the insertion point (Major snap line on Alignment page). Note that any user defined offsets specified and minor alignment of the member selected on the ‘Alignment’ page will not be respected.

    The consequence of the change is that for members (beams and braces), if global offsets have been set, or the minor snap line has been adjusted, these edits will not be reflected after exporting to IDEA StatiCa from Tekla Structural Designer 2026 SP1. You will therefore need to set the offsets accordingly in Checkbot itself.

  • [TSD-18661] - IFC Export Fails on UNC Share folder path

    IFC Export now supports UNC (Universal Naming Convention) shared folder locations (e.g., \\servername\share). The unexpected parameters error that previously occurred during IFC Export to these UNC paths has been corrected.

Design (General)

  • [TSD-12013] - Pile Cap Design - Ignore bending checks for single pile pile cap

    The bending check in the design of single pile pile caps is now skipped by default in cases where the column is resting within the perimeter of the supporting pile, in a direct bearing situation.

    The choice to perform the check or not (default) can be controlled from Design Settings.

    In all cases where the column is not in direct bearing - i.e., eccentric with the pile, a warning is now provided in the results output stating that design assumes that the pile cap is stabilized by other means.

Design (Eurocode)

  • [TSD-19353] - Imposed loadcase type for 2D Portal Frames

    When 2D Portal Frame design was first introduced in Tekla Structural Designer 2026, the default loadcases applied when a 2D Portal Frame was created were as follows:

    Loadcase Title Type Default
    Self weight Self weight not applicable
    Dead Dead 0.1 kN/m2
    Services Dead 0.15 kN/m2
    Imposed Imposed 0.6 kN/m2

    The Imposed loadcase, intended for roof access, was inappropriately classified as Imposed. As a result, when load combinations were automatically generated, it was incorrectly combined with Wind and Snow loadcases.

    To rectify this, the default loadcases have been updated in Tekla Structural Designer 2026 SP1. The roof access load is now correctly classified as Roof Imposed.

    Loadcase Title Type Default
    Self weight Self weight not applicable
    Dead Dead 0.1 kN/m2
    Services Dead 0.15 kN/m2
    Roof Imposed Roof Imposed 0.6 kN/m2

    By changing the load type to Roof Imposed, the roof access load is now excluded from combinations involving Wind and Snow loadcases.

Reports and Drawings

  • [TSD-19273] - Display pile name reference when piles are supporting Pilecaps or Foundation Mats

    The Label (default or user name) for piles can now be displayed in a 2D view by choosing the option Text in the scene content of Pile.

Note: The number in brackets before 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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