Arc by Tangent, Radius and Arc Distance

(This functionality is available with the Computations module)

Creates a new arc by specifying a radial start point, an incoming tangent bearing, radius and arc distance.

To run this option, select the Create/Arc command and the appropriate Method command from the Computations task to display the relevant dialog box.

The arc to be created will be given the attributes currently defined via the Attributes/Line command, and the associated new tangent point created will be given the attributes currently defined via the Attributes/Point command. You should use these commands to set the required attributes before creating any arcs.

Create Arc by Tangent, Radius and Arc Distance

Item	Used to
Point ID	Key in the point identifier to be assigned to the new tangent point.
Radial Point	Select the point that will be the starting tangent point of the new arc.
Ref. Line:	Specify the incoming tangent bearing by two points.
Radius	Key in or Specify the radius for the new arc. Note that a negative arc distance will create an arc heading to the left of the Ref. Line direction.
Ard Distance	Key in or Specify the arc distance for the new arc.
OK	Create the new arc.
Next	Update the point identifier field to the next available unused point identifier greater than the point identifier currently shown.
Last	Update the point identifier field to one greater than the highest point identifier in the data base.