You can create construction arcs by picking three points in the 3D space in the model.

1. On the Edit tab, click Construction object > Arc.
2. On the contextual toolbar that appears, click a button to specify which set of points you want to pick:

   • Click , and then pick three points: the center point, start point, and end point of the arc.

     You can also define the angle or the length of the arc.

     

   • Click , and then pick the start point, end point, and a point along the arc.

     

   • Click , and then pick a point to define a tangent, and two points along the arc.

     

   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.

   

3. To end the command, press Esc.
4. To modify the construction arc properties, double-click the arc in the model.

   The arc properties are shown in the property pane.

   1. Select a color for the arc.
   2. Select a line type for the arc.
   3. Click Modify.