Edit the grading model in the dialog box to represent the roundabout's crown alignments and cross-slopes. This allows the designer to evaluate the design for high points and low points in a three dimensional way.

Note: This tool requires that the roundabout was created with at least one approach leg.

Design Grading Dialog Box

Tools Section

Button	Option	Click to...
	Edit Vertical Profile	Edit the vertical profile of a selected alignment or corner region.
	Edit Cross-Slope Region	Edit the slopes of a selected cross-slope region.
	Generate Top Surface	Generate an OpenRoads Designer or Civil 3D® surface from the grading model's elevations. Note: This button is only available when TORUS is run within AutoCAD® Civil 3D®.
	Edit Daylighting	Edit the daylight settings for the roundabout.
	Civil 3D Grading Objects	Specify the settings of and generate/delete the Civil 3D® grading objects for the grading model. Note: This button is only available when TORUS is run within AutoCAD® Civil 3D®.
	Display Civil 3D Grading Objects	Display or hide the Civil 3D grading objects for the grading model. Note: This button is only available when TORUS is run within AutoCAD® Civil 3D®.

Grading Model Section

Displays a two dimensional plan view of the grading model.

Grading Design Checks Section

In this section, select the check box to specify the corresponding value.

Minimum Alignment Slope

Specify the minimum alignment slope value. The minimum grades along the corner alignment which are less than the absolute Minimum Alignment Slope value will be indicated in red.

Maximum Cross-slope

Specify the maximum cross-slope value. This is the maximum cross-slope in a cross-slope region. Cross-slopes exceeding the maximum value will be indicated in red.

Spot Elevation Interval

Specify the spot elevation interval value. This is the spacing interval between spot elevation labels on the alignments.

Cross-slope Settings Section

Draw all Cross-slopes

Select this option to draw all cross-slope values in the grading model. If this option is not selected, only the exceeded cross-slope values will draw.

Cross Slope Interval

Specify the cross-slope interval value. This is the spacing interval between cross-slope lines in the cross-slope regions.

Button	Option	Click to...
	Grading Settings	Specify the grading settings.
	Draw Contour Lines	Draw a contour representation of the grade elevations.
	Export Alignments as LandXML	Export the grading alignments as a LandXML format file. After clicking this button, specify a name for the LandXML file, and then click Save in the Export LandXML dialog box.