Create Alignment From Objects Dialog Box

Use this dialog box to specify the attributes of an alignment, including the name, description, style, and starting chainage.

Name: Specifies the name of the alignment. Each alignment must have a unique name.

Type: Specifies the type of alignment you're creating: centerline, offset, corner radius, rail, or miscellaneous. You can use these alignment types to categorize your data based on alignment function. For example, select the centerline type for a road centerline, the rail type for a railway, or the miscellaneous type for other uses, such as an utility conduit.

Note: After an alignment is created, you can change its type on the Information tab of the Alignment Properties dialogue box.
Description: Specifies an optional description of the alignment.
Starting Chainage: Specifies the chainage value that is assigned to the beginning of the first element in the alignment.

Note: Use the Chainage Control tab in the Alignment Properties dialog box to change the starting chainage after you create an alignment.

General Tab

Site: Specifies a site for the alignment. Select a site from the list, or click to either create a site or select one from an object in the drawing. The alignment and the object you select in the drawing are associated with the same site.

Note: The default selection is <None>, which places the alignment in the top-level Alignments collection in Prospector. See About Alignment and Site Interaction for more information.

Alignment Style List: Displays the current style. Click the arrow to select another alignment style in the drawing.
Style Selection: Specifies the style options. Create a style, copy or edit the current style selection, or pick a style from drawing.
Style Detail: Opens the Style Detail dialog box. Preview the style and creation information.

Alignment Layer Display List: Displays the layer on which the alignment object will be created.
Object Layer: Opens the Object Layer dialog box, in which you can select or create a layer on which the alignment will be drawn.

Alignment Label Set List: Displays the default alignment label set. You can either accept the default label set, or use the list to select a different one from the drawing.
Label Set Selection: Edits or copies the current label set, or creates a label set. The Style Detail icon previews the current style.
Style Detail: Opens the Style Detail dialog box. Preview the label set and creation information.

Add Curves Between Straights

Specifies whether to automatically add curves between each straight.

Selected: Curves are placed at each straight-straight intersection. The radius of the curve is calculated as a percentage of the straight length and the deflection angle.
Cleared: Curves are not added automatically during creation.

Note: You can add curves using the Alignment Layout Tools.

Erase Existing Elements

Specifies whether the elements you selected when creating the alignment are erased. Select the check box to erase the elements.

Starting Design Speed: Specifies the design speed at the alignment starting chainage. If no other design speeds are applied to the alignment, then the Starting Design Speed is applied to the entire alignment.
Use Criteria-Based Design: Specifies whether design criteria is applied to the alignment. If this check box is cleared, then the Use Design Criteria File and Use Design Check Set options are not available.

Use Design Criteria File: Specifies whether to associate a design criteria file with the alignment. If this check box is cleared, then the design criteria file selector and Default Criteria table are not available.
Design Criteria File Selector: Specifies the design criteria file to associate with the alignment. The first design criteria file found in the following directory is used by default: C:\ProgramData\Autodesk\C3D <version>\eng\Data\Corridor Design Standards\<units>. Click to select a different design criteria file.
Default Criteria Table: Displays the standards formulas that are defined in the selected design criteria file. Click the Value column to change a criteria table.

Use Design Check Set Check Box: Specifies whether to associate a design check set with the alignment. If this check box is cleared, then the Design Check Set list is not available.
Design Check Set List: Displays the default design check set. You can either accept the default design check set, or use the list to select a different one from the drawing.
Design Check Set Selection: Edits or copies the current design check set, or creates a design check set.