2.1.1 - Create the Alignment
Step Description:
Open the ALGNRD##.DWG if it is not already opened.
If the drawing has not yet been created use the FDOT Create/Edit Application to create the ALGNRD##.DWG file.

If geometry is not already provided construct the alignment geometry graphically. An alignment can be created from a polyline or it can be constructed with the Alignment Layout Tools.

Creating an alignment from a polyline:
  • Ribbon Home tab > Create Design panel > Alignment drop-down > Create Alignment from Objects.

Create Alignment from Objects command

  • Select the polyline in the drawing.
  • In the Create Alignment from Objects dialog box, input an [alignment name], type, and specify the [starting station] for the alignment.
Create Alignment from Objects dialog
  • Specify any other parameters under the General tab and then click on the Design Criteria tab.
  • Set the Design Speed, toggle On the Use Criteria-based design and Use Design Criteria File.
  • Specify the Design Criteria File.

Design Criteria Dialog Image


Design Criteria File Location Image

NOTE: By default this file will be located here: C:\FDOT2012.C3D\Data\Corridor Design Standarads\FDOTGreenBook_2007 for C3D2012.xml

Create from Alignment Layout Tools:
  • Ribbon Home tab > Create Design panel > Alignment drop-down > Alignment Creation Tools

Alignment Creation Tools command

  • Access the Alignment Layout tools toolbar by defining the General and Design Criteria in the Create Alignment - Layout dialog and select OK.

Create Alignment Layout dialog

NOTE: Be sure to use the FDOT Greenbook Design Criteria file in the Design Criteria tab. By default this file will be located here: C:\FDOT2012.C3D\Data\Corridor Design Standarads\FDOTGreenBook_2007 for C3D2012.xml


Alignment Layout Tools Toolbar

  • Utilize the various tools to construct the alignment.
AutoCAD Civil 3D 2012 User's Guide reference:
User's Guide - Alignments - Creating Alignments

For more information watch the video below:
  • Alignment Layout (WMV)