Tekla Structures 2026 SP3

The latest Tekla Structures service pack and updated environment installers are available in Trimble Downloads.

We recommend that you install the latest Tekla Structures service pack version.

Tekla Structures 2026 SP3.1

Tekla Structures 2026 SP3.1 resolves an issue where inspecting or editing drawings could be slow, especially when moving the mouse pointer between views with a high number of objects (TTSD-77045). This issue was caused by the section view associativity dialog performance.

Users who need this fix should download Tekla Structures 2026 SP3.1.

Tekla Structures 2026 SP3.1 is a full installation package. Tekla Structures 2026 SP3.1 contains all the fixes from Tekla Structures 2026 SP3, along with the additional fix specified above.

Updates in Tekla Model Assistant (Preview)

Improved conversation memory

Tekla Model Assistant now remembers more of your recent chat history instead of a limited number of messages. The assistant keeps your current question and the most recent results ready to use, and it will only remove the oldest parts of the conversation if it needs to make more space.

TTSD-77068

Better handling of large requests

Tekla Model Assistant now breaks large, complex requests into a series of steps. This helps the assistant follows the given instructions accurately. You can see which parts are finished, and update the remaining tasks at any time to match your project needs.

TTSD-76269

Summary of the open model

Tekla Model Assistant can now provide an instant, comprehensive overview of the model. Instead of processing objects individually, the assistant uses a new internal tool to retrieve key project data. This allows the assistant to answer questions like What’s in the model, How heavy the model is, How many beams and columns are in the model, What are the used profiles and materials, and How big is the model without needing to process objects individually.

You can

view the number of parts, components, welds, reinforcement, and reference models, and other uncategorized objects.
Check the number of parts. Parts are grouped by name, such as BEAM, COLUMN, or PLATE.
retrieve the total amount of individual bolts and bolt groups.
identify the number of profiles and materials used in the project.
view the total weight of all parts.
View the bounding box from all parts: min/max in mm, sizes in mm and meters, and imperial size strings when relevant.

TTSD-76271

Object deletion in Tekla Model Assistant

You can now use Tekla Model Assistant to delete objects from your model or drawing. The assistant finds the matching objects, highlights them, and asks you to confirm the action before deleting them. If you decline the request, the objects are not deleted. For very large deletions, the assistant processes the objects in smaller groups and asks for your permission before it deletes the objects.

TTSD-76277

Identical property names

When a standard object property and a user-defined attribute (UDA) share the same name (such as Class), Tekla Model Assistant now shows both values instead of potentially missing one. You can also use UDA: or REPORT: prefixes to specify exactly which property you want. The assistant will then search only that category to find or modify the data.

TTSD-76091

Manage components and browse catalogs more efficiently

View component contents: You can now get a detailed breakdown of up to five selected components at a time. Tekla Model Assistant lists all component objects, including bolts, welds, reinforcement, and cuts with their properties.
Modify component properties: You can update component properties directly in the Tekla Model Assistant chat. For example, you can ask the assistant to change the plate thickness or step height.
Browse the profile catalog: You can search for and list available profiles in the environment. You can view the full list or use wildcards (for example: HEB*, IPE*, or CHS) to find specific profiles.
Browse the material catalog: You can search for and list materials available in the model. By using wildcards (for example: S355* or B500*), you can see all matching material grades and types.

TTSD-76067

Direct catalog access

Tekla Model Assistant now accesses your local catalogs directly to find profiles, materials, and components. The assistant recognizes the exact same items that are available in your active Tekla Structures session. This prevents issues where components were missing or incorrectly substituted. The catalog information updates automatically when you open or switch models.

TTSD-76278

Clash check in Tekla Model Assistant

You can now ask Tekla Model Assistant to run a clash check in your model or on a specific selection of objects. Based on your request, the assistant filters and selects the objects to run the clash check against.

The results are displayed in the Clash check manager dialog.

TTSD-76272

Find drawings by creation or modification date

You can now search for drawings by when they were created or modified. In addition to searching by Name or Mark, you can specify a custom date range or use everyday terms, such as today or last 7 days to find the drawings you need.

TTSD-76471

Improved update process

The assistant update process now ensures that required updates cannot be skipped. Previously, if you skipped a mandatory update and a newer optional update was released, you could skip updating and never install the required version.

Now, a minimum required version is tracked. If your installed version is below the minimum required version, you must update before using Tekla Model Assistant. If your assistant version is already on or above the minimum required version, you can still skip optional updates when the latest release is not mandatory.

TTSD-77190

New buttons for picking points and angles in Rotate and Mirror dialogs

The Pick... button has been added to the Copy - Mirror and Move - Mirror dialogs.

The Pick... and Pick angle... buttons have been added to Copy - Rotate and Move - Rotate dialogs.

It is now possible to redefine the points or angles directly from the dialog without having to restart the command.

TTSD-70149

Publish to Tekla Structural Designer (Preview): View and generate revisions

You can now view the names of previous revisions for cloud models published to Tekla Structural Designer. In the Publish to Tekla Structural Designer dialog, click the new button next to the Revision box to see the five latest revisions of the selected published model.

In revision names, you can use formats such as letters only, numbers only, or a single letter followed by numbers. Spaces, full stops, and dashes can be used as separators. If there is a pattern in the names of the two latest revisions, such as a prefix and a number or letter, Tekla Structures automatically suggests the next revision name.

TTSD-76847

Fixes

Defect number	Development area	Description
TSAC-10100	Concrete components	Corbels and recesses (82): Previously, the component sometimes created parts outside the main part when the main part was cut. This issue has been fixed.
TSAC-10163	Concrete components	Floor layout: Previously, in some situations, modifying a floor layout could cause Tekla Structures to stop working. This issue has been fixed.
TSAC-10175	Concrete components	Embedded anchors (008): Previously, in some situations, there was an error when trying to use the component from another component. This issue has been fixed.
TSAC-9940	Concrete components	Beam reinforcement (63): Top and bottom rebar groups are now moved horizontally before the stirrups bending start so that they cover somewhat more space. The vertical position stays unchanged.
TSAC-10026	Steel components	Z pan (S74): Previously, when the length of the front part of the step was zero, there was a gap between the actual step and the previous step. This issue has been fixed.
TSAC-10124	Steel components	Hollow brace wraparound gusset (59): Previously, it was not possible to set the bolt assembly type for the brace bolts on the brace side. This issue has been fixed.
TSAC-10127	Steel components	Stairs (S71): Previously, top landings were not created when the input points of the component were picked in an incorrect order.
TSAC-10132	Steel components	End plate (144): Previously, unwanted horizontal stiffeners were created when a seat plate was used. This issue has been fixed.
TSAC-10134	Steel components	Column site weld splice (137): Previously, bolts were not created when a chamfer was not created on the gusset plate. This issue has been fixed.
TSAC-10150	Steel components	Tapered column-beam stub (150): Previously, some unwanted material from the bottom flange was left in the model. This issue has been fixed.
TSAC-10151	Steel components	Cage ladder (S60): Previously, when you defined to cut stringers into segments with a certain maximum length and the stringers were created as polybeams, some segments were created with an incorrect length. This issue has been fixed.
TSAC-10159	Steel components	Stiffened base plate (1014): Previously, an incorrect numbering position and prefix was applied to fitting plates 2 and 3. This issue has been fixed.
TSAC-10162	Steel components	Tube seat (104): Previously, chamfers were not created on the seat plate when the main part was a U profile. This issue has been fixed.
TSAC-9749	Steel components	Corbel reinforcement (81): Sometimes, transverse stirrups were not created even though they were defined. This issue has been fixed.
TSAC-777	Import, export, interoperability	Layout manager: You can now define part and assembly numbering for layout points, layout lines, and layout arcs. This improves numbering consistency, and supports fabrication and coordination workflows, for example between different models and users.
TTSD-75464	Import, export, interoperability	IFC4 and TrimBIM export: The MAIN_PART property was not exported correctly in the IFC4 and TrimBIM exports. This issue has been fixed.
TTSD-76009	Import, export, interoperability	IFC4 and TrimBIM export: All nut type and number properties are now exported in the TrimBIM and IFC4 export.
TTSD-76186	Import, export, interoperability	IFC4 export: Property set filters for rebar sets now work for the IFC4 export.
TTSD-76281	Import, export, interoperability	IFC4 export: Exporting pours with selected objects duplicated some exported parts in the IFC4 export. This issue has been fixed.
TTSD-76289	Import, export, interoperability	IFC4 reference models: Previously, when you used map conversion and a base point simultaneously, IFC4 reference models were positioned incorrectly. This issue has been fixed.
TTSD-77012	Templates and reports	Template Editor: The CLASS_ATTR attribute can now be used for the content type ANTIMATERIAL in Template Editor.
TSAC-10063	Drawings	Drawing 2D Library: The detail path is now reset to the current model path if the stored path points to a different model folder. Previously, the detail path pointed by default to the previously opened model.
TSAC-9690	Drawings	Advanced grid labels: Now the customized grid labels are always placed according to the positioning settings defined in the Advanced grid label properties dialog. Previously, changing some settings in the dialog could change the label positions.
TSAC-9805	Drawings	Advanced grid labels: The correct Trimble User Assistance help page is now displayed when the Advanced grid label properties dialog is active and you press the F1 keyboard button. Previously, the old extension help page was displayed.
TTSD-73449	Drawings	Previously, running modeling macros for numbering or creating assembly and single-part drawings while a general arrangement drawing and a model view were open simultaneously could corrupt the general arrangement drawing. To prevent this, you must now close the drawing before running these macros.
TTSD-74102	Drawings	Integrated dimensions: Reinforcement dimensions now correctly create dimensions for rebars in all directions. Previously, dimensions were created only in one direction, for example, in the horizontal direction.
TTSD-74297	Drawings	View-based dimensioning: When creating automatic view-level dimensions for rebars using integrated dimensions as the dimensioning type, the created dimensions are now correctly aligned perpendicularly to the rebars.
TTSD-75894	Drawings	Earlier, in some rare cases, a cast unit drawing would not open if there were dimension sets containing combined dimensions with dimension tags. This issue has been fixed.
TTSD-76206	Drawings	Previously, in some situations, when you edited drawings, Tekla Structures stopped working when you switched between drawings. This issue has been fixed.
TTSD-76244	Drawings	The Select previous objects command now works more reliably in drawings. Earlier, the previously selected objects were selected in the drawing but the property pane remained empty. Now the properties are shown in the property pane.
TTSD-76382	Drawings	Drawing view filters are now copied from one drawing to another through drawing view properties.
TTSD-76455	Drawings	Previously, when you showed drawing views in the model through Document manager and modified a view in the model, the changes were not shown in the drawing. This issue has been fixed.
TTSD-76630	Drawings	Earlier, in some rare situations, Tekla Structures could close unexpectedly when you modified a drawing view label. This issue has been fixed.
TTSD-76700	Drawings	Previously, corrupted drawing snapshots sometimes caused the memory usage to be too high when opening drawings. Now the handling of corrupted drawing snapshots has been improved.
TTSD-76803	Drawings	Previously, when you used a PipeEnd1 pattern line in a drawing, an unexpected line appeared next to the pattern line. This issue has been fixed.
TTSD-76811	Drawings	Previously, when using area selection in drawings, the handles of the selected sketch objects were not shown. This issue has been fixed.
TTSD-76812, TTSD-76401	Drawings	Rebar dimension marks: Earlier, when creating rebar dimension marks for the selected rebars, the dimension tag also showed the content of a neighbor rebar. This issue has been fixed. The rebar dimension mark now only shows the tag content of the rebar that the dimension mark is created for.
TTSD-76851	Drawings	Snapping to part center lines in drawings now works correctly.
TTSD-77159	Drawings	Previously, copying a general arrangement drawing to a new sheet created level marks with incorrect values. This issue has been fixed.
TTSD-75979	Tekla Model Sharing	Tekla Model Sharing: Previously, in models that were shared in Tekla Model Sharing and where pour management was enabled, pour objects were sometimes incorrectly shown as modified after a read in or a join if the main part name was longer than 21 characters. This has been fixed.
TTSD-76610	Tekla Model Sharing	Tekla Model Sharing: Building hierarchy is now handled faster at read in.
TTSD-76326	Reinforcement	Rebar sets: An issue has been fixed that could cause incorrect grouping of rebar set bars situated exactly in line with a hole edge.
TTSD-73933	Modeling	Tekla Launcher: Fixed an issue where an error message could appear when creating and opening a new model with certain environment settings.
TTSD-75860	Modeling	Previously, if the Select component dialog was open when you closed Tekla Structures, Tekla Structures stopped unexpectedly instead of closing normally. This issue has now been fixed.
TTSD-75932	Modeling	In the Model view side pane, double-clicking a model view no longer causes an error message when the advanced option XS_MDIVIEWPARENT is set to `FALSE`. This issue has been fixed, and double-clicking a view now gives focus to the floating view window.
TTSD-75957	Modeling	Previously, rebar labels were shown in incorrect locations in model views where the view plane was not on the global xy-plane. This issue has been fixed.
TTSD-76211	Modeling	Building hierarchy: Site, building, and building storey name can now contain 61 characters.
TTSD-76291	Modeling	Previously, it was not possible to modify properties in hidden property groups found by using the search filter in the property pane. This has been fixed.
TTSD-76377	Modeling	Previously, opening the Snap settings dialog in a drawing could show the model snap settings, and vice versa. This has been fixed.
TTSD-76493	Modeling	Welds: Previously, when synchronizing the Above line and Below line values of welds, the synchronization buttons in the property pane did not work correctly. In addition, several attempts were required to synchronize weld values in the model and weld mark values in drawings to achieve the desired result after insertion. This issue has been fixed, and the synchronization buttons now work as expected.
TTSD-76903	Modeling	Tekla Launcher: The `IsTemplate` attribute is now correctly set to `FALSE` for regular models in the `TeklaStructuresModel.xml` file.
TTSD-77233	Modeling	Previously, when modifying rebar labels in a model view, they were not always updated. In some cases, you had to click Modify twice to update the rebar labels. This issue has been fixed.
SOLD-2921	Licensing	License Management Improvement: Closing Tekla Structures no longer triggers a "Failed to return license" error message if the license has already been released by another concurrent session of the same version.
TTSD-67795	Licensing	The Exit dialog has been updated to make the option to keep the license reserved easier to understand.
TTSD-76629	Tools and components	Earlier, in some rare cases, Tekla Structures might stop working unexpectedly when working with rebars in system components. This issue has been fixed.
TTSD-76665	Import, export, interoperability (steel)	STEP/IGES export: All bolt holes are now exported completely for flat and curved surfaces.
TSAC-10110	Import, export, interoperability (concrete)	BVBS export: The way of obtaining bending diameter for spiral reinforcement has been improved.
TSAC-10113	Import, export, interoperability (concrete)	BVBS export: Tekla Structures stopped responding when spiral rebars created in circular rebar groups had hooks. This issue has been fixed.