To Change Alignment Chainage Control Properties

1. Click Alignment tabModify panelAlignment Properties drop-downAlignment Properties Find.
   Note: The tab most recently opened in the Alignment Properties dialog box is displayed by default.
2. In the Alignment Properties dialog box, click the Chainage Control tab.
3. Under Reference Point, click . The Alignment Properties dialog box closes.
   Important: Changing the reference point location or the reference chainage value removes all chainage equations and design speeds and can adversely affect objects and data already created from the alignment. Click OK to continue or Cancel to abort this operation. Use Chainage Equations to change chainages after you create Profiles and Cross Sections.
4. In the drawing, pick a point where you want to establish the XY coordinates for the Reference Point. The Alignment Properties dialog box is displayed again.
5. In the Reference Point box, under Chainage, enter a starting chainage value.
6. In the Chainage Equations box, click . The Alignment Properties dialog box closes.
7. In the drawing, pick the point for the first chainage equation. The Alignment Properties dialog box is displayed again.
8. Repeat Steps 6 and 7 to add more chainage equations.
9. By default Chainage Ahead and Raw Chainage Back have the same value. Click the Chainage Ahead cell and enter a new value.
10. Click the Increase/Decrease cell to determine whether the chainage values from the Chainage Equation increases or decreases from the Chainage Ahead value.