Tekla Structural Designer 2026 Open API Release Notes

Tekla Structural Designer Open API 2026

In Tekla Structural Designer 2026, the following capabilities have been added:

• The type of the property MinorAxisElasticSectionModulus of IColdRolledSectionBase has been changed to double?.
   
• The obsolete IModel.CreateMemberAttributeSetAsync method overload has been removed.
   
• The interface IFlatBar has been removed (use IBar instead).
   
• Crane value has been added to LoadcaseType enumeration.
   
• The IPortalFrame.AutoDesign property has been made obsolete and will be removed in version 27.0.0.

The updated package can now be downloaded from nuget.org.