ALI Civil 3D Alignment Tutorials
Alignment Definition
Horizontal alignments are typically used to represent road centerlines and other linear objects (e.g. edges of pavement, sidewalks, or rights-of-way).
Alignments can include lines, curves, and spirals, which can be joined by constraints. When you edit an alignment, for example, by dragging a grip, the components of the alignment can maintain tangency to one another. You can create alignments from existing polylines, or by using AutoCAD® Civil 3D® alignment layout tools. You can edit an alignment either by grip editing or by using edit commands.
Alignments are “stationed” to represent distance along an alignment. Stations are typically represented using a series of numbers separated by a “+” sign, and in the U.S. represent 100′ increments. For example, station 1+00 is equal to a distance of 100′ from the start of an alignment (sometimes called the base point, or reference point).
Alignment Tutorials
- ALI101 Alignment Playground
This drawing was initially released by Autodesk for Civil 3D 2004. It contains several examples of alignment types (free, floating, etc.). - ALI100 Edit Alignment Labels & Label Sets
One of the most difficult tasks to master in learning Civil 3D is that of setting up alignment labels, and alignment label sets. This video steps through the process of determining where labels are coming from, and how to modify them.
Related Tutorials
- PIP101 Create Alignment Data Shortcuts
To share alignment information between drawings, it’s necessary to create “data shortcuts.” This tutorial walks through the process of creating alignment and profile data shortcuts.
Alignment Links
Civil 3D Tutorials
AutoCAD® Civil 3D® Tutorials
Videos & Podcasts require QuickTime®.
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