Alignments (and,
profiles) have a special kind of annotation that is applied either to the entire alignment at once or to a range of stations within the alignment. This annotation repeats at specified increments or when specific types of geometry are encountered. This type of annotation is very useful because it changes as the alignment changes, even if new geometry is added or the length of the alignment changes. In all, you can add seven types of alignment labels in this way. This section does not cover all seven types, but you will learn about the following three alignment label types:
- Major Station Labels
- Placed at the major station increment, which is larger than the minor station increment. They typically include a tick mark along with a numerical label calling out the station.
- Minor Station Labels
- Placed at the minor station increment, which is smaller than the major station increment. These typically consist of tick marks.
- Geometry Point Labels
- Placed at key geometric points along the alignment, such as the beginning of the alignment, ending of the alignment, places where there are curves, and so on.
