Editing Alignments Numerically

At times, you may want to adjust your design by telling Civil 3D the exact dimension of a portion of the alignment. This can be done in one of two different ways. The first is Alignment Grid View, which opens a tab in Panorama. This tab shows the geometry of the alignment in table form and enables you to edit some of the values to adjust the design.

To edit alignments numerically using Alignment Grid View, follow these steps:

1. Open the drawing named Numerical Editing.dwg located in the Chapter 05 class data folder.

2. Click the Jordan Court alignment, and then click Geometry Editor on the ribbon.

3. Click Alignment Grid View to open the Alignment Entities tab and display the tabular version of the alignment geometry, as shown in Figure 5.13.

   Figure 5.13  The Alignment Entities tab of Panorama showing the tabular data of the alignment.

4. Change the Radius value for items 2 and 3 to 150 (45). Notice that the alignment updates automatically in the drawing. Keep this drawing open for the next exercise.

   Tips :The item number is found in the No. column.

Another method for editing the alignment design numerically is referred to as Component-Level Editing. With this approach, you open the numerical data for a piece of the alignment (such as a line, curve, or spiral) in a separate window. This is done by clicking the Sub-entity Editor button on the Alignment Layout Tools toolbar and then using the Pick Sub-entity tool to choose the part of the alignment you want to edit.

To edit alignments numerically using Component-Level Editing, follow these steps (you should still have Numerical Editing.dwg open from the previous exercise):

1. Close Panorama. Click Sub-entity Editor on the Alignment Layout Tools toolbar to display the Alignment Layout Parameters dialog box. (This dialog box is blank when it first appears.)

2. Click Pick Sub-entity (see Figure 5.14), and then click the curve at the 90-degree bend on Jordan Court. This will populate the Alignment Layout Parameters dialog box with data, as shown in Figure 5.14.

   Figure 5.14  The Sub-entity Editor Tool, Pick Sub-entity Tool, and Alignment Layout Parameters dialog box.

3. Change the Radius value to 50 (15).
4. Close the Alignment Layout Parameters dialog box and the Alignment Layout Tools toolbar.

Editing Alignments

• Editing Alignments with Grips
• Editing Alignments Using the Alignment Layout Tools
• Editing Alignments Numerically

Download Exercise File :

• Editing Alignments - Metric     --- ( 2.44 MB )
• Editing Alignments - Imperial  --- ( 2.18 MB )