You can create construction arcs by picking three points in the 3D space in the model.
- On the Edit tab, click .
- On the contextual toolbar that appears, click a button to specify which set of points you want to pick:

Tekla Structures creates the arc using the points you picked and using the current properties. Tekla Structures also indicates the center point of the arc with an X in the model.

- To end the command, press Esc.
- To modify the construction arc properties, double-click the arc in the model.
The arc properties are shown in the property pane.
- Select a color for the arc.
- Select a line type for the arc.
- Click Modify to apply the changes.
Tekla Structures uses the new properties the next time you create an object of this type.