Add surfaces to part faces and pour object faces

Tekla Structures
Tekla Structures

Add surfaces to part faces and pour object faces

You can add surfaces to the faces of parts and pour objects in the model. You can add surfaces to any face geometry, for example curved faces. You can use surfaces for calculating surface areas, such as formwork areas, or for defining face-specific concrete covers for rebar sets.

Each surface is added to a single flat or curved face. Surfaces do not extend over fillet edges between flat and curved faces.

Surfaces are associated with the objects they are attached to. Surfaces cannot exist as standalone objects. A surface can be associated either with a cast-in-place part or a pour object, but not with both. Surfaces associated with parts or pours can be shown in reports as belonging to those objects.

If you modify the geometry of the associated part, the surface will adapt to the changes. If you copy, move, or delete the associated part, the surface will follow. If a part and one or more of its surfaces are selected and copied or moved, all the surfaces of the part will follow.

If a surface is added to a pour object, it will not automatically adapt to changes that only affect the pour object, such as inserting pour breaks. The surface will not be copied if the parts that form the pour object are copied.

You can also copy and move surfaces separately from the objects they are attached to, but only within the same object type, i.e. from a part to another part, or from a pour object to another pour object. The source object face and the target object face need to be similar enough and facing in the same direction. The point picked when the source surface was created must also land on the target face.


  • Surfaces do not recognize faces created by displaying objects with high accuracy, such as curved profile fillets.

  • Surfaces do not have handles, so their geometry cannot be modified separately from the associated object.

  • Surfaces are not shown in drawings.

Add a surface to a face

  1. On the Edit tab, click Surfaces > Add surface to face.
  2. Depending on whether you want to create the surface on a part or on a pour object, use a part view or a pour view.

    To switch between part and pour views, click Pour view on the Concrete tab.

  3. Select the part face or pour object face to which you want to add the surface.

    Tekla Structures adds the surface using the Surface properties in the property pane.

    If you modify the properties, Tekla Structures uses the new properties the next time you create an object of the same type.

Modify surface properties

  1. If the property pane is not open, double-click the surface to open the Surface properties.
  2. Change the properties as needed.

    For example, you can define the surface type and whether you want the surface to be cut by the holes in the part or pour object.

    If you want to use the surface for defining a specific concrete cover thickness for rebar sets at this part face or pour object face, set Type to Concrete cover and then enter the value in the Concrete cover box in the Rebar set section.

  3. Click Modify.
Was this helpful?