Create a Circular Arc by Start, End and Radius

Create a circular arc segment using the start and end vertices and a radius.

Home / Tools / Create / Line or Alignment or Polygon / Circular Arc / Start, End and Radius

Solve module

The following controls are available.

Control	Description
Name	Type a name for the generated object or click to increment to the next available name.
Radius	Input the radius.
Start	Input the start vertex.
End	Input the end vertex.
3D circular arc	Do one of the following: Select the checkbox to compute the circular arc in 3 dimensions. Clear the checkbox to exclude the vertices heights from the arc calculations.
Clockwise	Do one of the following to specify the direction of the arc: Select the checkbox to create the arc in a clockwise direction. Clear the checkbox to create the arc in an anticlockwise direction.
Create Circle	Do one of the following: Select the checkbox to create a circle. Clear the checkbox to create an arc between the start and end vertex.
Alternate Solution	Select or clear the checkbox to select the required solution.

• The circular arc is constrained to a constant grade.
• Use to create lines, alignments and polygons.
• If 3D is cleared:
  • Distances input are interpreted as 2 dimensional distances.
  • Heights are not used to compute the arc components.
  • Lines will display as a circular arcs in the Plan view.
  • Vertices heights are used to display the curve in 3D view.
• When creating an alignment:
  • You can create 2D circular arcs only.
  • This tool is available providing the horizontal design standard in the create options is configured to 'None'.
• When computing in 3D this method is only suitable for smaller changes in height.
• Click OK when the required solution is displayed in the model view.

• Create a Line
• Create a Polygon
• Create an Alignment
• Create Tool
• Naming Options
• Controls
• Create Options