Engineering CAD & Design Tutorials
Learn how to use Civil 3D outputs, parse alignment listings, superelevate corridors, and format heavy coordinate files. Click on a tutorial below to view its interactive step-by-step walkthrough.
Tutorial Courses
How to Export and Clean Horizontal Alignments in Civil 3D
Learn standard workflows for exporting horizontal curves from Autodesk Civil 3D and formatting them into administrative tables.
Step 1: Locate the Alignment in Toolspace
Open your project drawing in AutoCAD Civil 3D. In the **Toolspace** window, select the **Prospector** tab. Expand the **Alignments** folder and select the active centerline alignment (e.g., Mainline_CL).
└── [Prospector]
└── Alignments
└── Centerline Alignments
└── Mainline_CL (Right-click to export/report)
Step 2: Generate the Alignment Curve Report
Navigate to the **Toolspace** > **Toolbox** tab. Expand **Reports Manager** and then **Alignment**. Double-click **Incremental Station Report** or **Curve Curve_Relation Report**. Select the alignment, choose a station interval (typically 20m), and export the file as a CSV or text listing.
Tip: Ensure coordinates (Easting, Northing) and stations (Chainages) are checked in the reports configuration window to prevent missing data.
Step 3: Clean Tan/Curve Duplicate Listings
Open the exported report. Raw files will contain hundreds of redundant tangent coordinates. Using Infradigital's **Horizontal Alignment Formatter**, drag-and-drop the CSV. The cleaner will automatically:
- Strip out duplicate tangent interval lines.
- Isolate critical curve control points (PC, PI, PT).
- Check minimum radius compliance against the AASHTO Green Book.