Create a Circular Arc by 3 Radial Vertices

Create a 3 dimensional circular arc segment using 3 vertices on the arc.

Home / Tools / Create / Line or Alignment or Polygon / Circular Arc / 3 Radial Vertices

• Solve module
• Profile module (Alignments)

The following controls are available.

Control	Description
Name	Type a name for the generated object or click to increment to the next available name.
Start	Input the start vertex.
Radial	Input a vertex that sits on the arc in three dimensions.
End	Input the end vertex.
3D circular arc	Do one of the following: Select the checkbox to create the arc in 3 dimensions. Clear the checkbox to exclude the vertices heights from the arc calculations.
Create Circle	Do one of the following: Clear the checkbox to create a 3 dimensional circular arc between the Start and End vertex. Select the checkbox to create a 3 dimensional circle that passes through the Start, Radial and End vertices.

• The circular arc is created automatically with the current Create Circle configurations once 3 valid vertices are input.
• 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'.

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