Edits the grading alignments and corner regions.

Note: To make changes to the leg lengths of the grading model or to replace any of the crown alignments, the grading model must be deleted and then recreated. The only opportunity to make these changes is in the first step of designing the grading (see Grading Model Configuration).

Edit Vertical Profile Dialog Box

Note: The Rebuild Civil 3D Grading Objects button and the surface profile display only when TORUS is run within AutoCAD Civil 3D.

Vertical Profile Section

Button	Option	Click to...
	Edit VPI	Enter the Edit VPI editing mode.
	Add VPI	Enter the Add VPI editing mode.
	Move VPI	Enter the Move VPI editing mode.
	Dynamically Update Grading Model	Enable and disable updating of the grading model in the drawing as changes are made.
	Rebuild Civil3D Grading Objects	Update the Civil 3D grading objects to the current grading model changes. Note: This button is only available when TORUS is run within AutoCAD Civil 3D and only if the Civil 3D Grading Objects have been generated (see Civil 3D Grading Objects).
	Add VPI on Grade Lines Only	Restrict the adding of VPI points to being on grade lines only, while in Add VPI editing mode.
	Edit Alignment Start Station	Specify a different starting station for the alignment, while in Edit VPI mode.
	Lock Alignment	Disallow editing of the alignment, while in Edit VPI mode.
	Draw Vertical Profile	Enable and disable drawing of the vertical profile at all VPIs.
	Draw VPI Grades	Display or hide the VPI grade values.
	Zoom In	Zoom in to the profile, increasing the view in the Y scale while maintaining the same X scale. Note: Use the vertical scroll bar to the right to keep the profile in view.
	Zoom Out	Zoom out of the profile, decreasing the view in the Y scale while maintaining the same X scale. Note: Use the vertical scroll bar to the right to keep the profile in view.
	Previous VPI	Select the previous VPI to the left, while in Edit VPI mode.
	Next VPI	Select the next VPI to the right, while in Edit VPI mode.
	Delete VPI	Delete the selected VPI.

VPI Settings Section

Station

Displays the VPI's current station value.

Elevation

Displays the VPI's current elevation value.

X Coordinate

Displays the current x coordinate value. This is the x portion of the x,y coordinates of the VPI measured from the drawing's origin (i.e. 0,0).

Y Coordinate

Displays the current y coordinate value. This is the y portion of the x,y coordinates of the VPI measured from the drawing's origin (i.e. 0,0).

Left Grade

Displays the current left grade value.

Right Grade

Displays the current right grade value.

Vertical Curve Settings Section

Displays the settings for the vertical curve at a VPI. The vertical curve can be set via the following options:

• None - No vertical curve will be applied at the VPI.
• K Value - This value and the Left Grade and Right Grade values from the VPI Settings section are used to calculate a curve length for the symmetrical parabolic curve.
• Curve Length - This is the length for the symmetrical parabolic curve. It is used to calculate the corresponding K Value.

Note: If the vertical curve cannot be generated for a VPI, a graphic is displayed at the VPI. To correct the error, try reducing the Curve Length value of the VPI and/or adjacent VPIs.

Horizontal Position Section

The mouse pointer’s horizontal position is tracked along the alignment or region relative to the plan view of the roundabout design as the mouse pointer is moved along the alignment or region in the profile area and represented in the Horizontal Position section of the dialog box as the blue point.

To Add a VPI:

To add a VPI (vertical point of intersection) to the alignment or region, click Add VPI, move the pointer to the desired station and elevation in the profile area along the editable portion of the profile, and then click to add the new VPI. TORUS will calculate the left grade and right grade percentages for the new VPI to suit.

Alternatively, to add a VPI onto the grade line only, ensure that Add VPI on Grade Lines Only is turned on, click Add VPI, move the pointer to the desired station in the profile area along an editable portion of the profile, and then click to add the new VPI.

To Edit a VPI:

To edit a VPI on the alignment or region, click Edit VPI, select the VPI to edit either by selecting the VPI or by using the Previous VPI or Next VPI buttons, and then change its settings in the VPI Settings section of the dialog box as desired.

To Move a VPI:

To manually move a VPI on the alignment or region, click Move VPI, and then click and drag the desired VPI to the new location. The Station and Elevation values of the VPI’s new position will update, and TORUS will automatically recalculate the Left Grade and Right Grade values.