AutoCAD Drawings

13 Articles

Detailed instructions on importing AutoCAD Civil 3D drawings and digital terrain models for constructing HEC-RAS engineering models, and exporting AutoCAD drawings containing HEC-RAS model results.

Adding an AutoCAD Drawing

This video details how to add and georeference an AutoCAD drawing file for a HEC‑RAS model. There are two ways of...

Generate Contours command

The Generate Contours command creates equally spaced contour lines from loaded elevation grid data. The user can specify major and...

Generate Terrain command

Digital terrain surfaces can be used for the following tasks: Extracting cross section geometry Computing 2D flow areas Determining bank...

HEC‑RAS Profile Plot Options

The HEC‑RAS profile plots can be customized for specific requirements, as described below. Cross Section Landmarks The defined cross sections...

Merge DEMs command

The Merge DEMs command is used to merge together multiple elevation grids (sometimes called rasters, DEMs or Digital Elevation Models)...

Process LIDAR command

The Process LIDAR command provides numerous advanced LIDAR processing tools, including point cloud classification filtering, extraction of buildings and other...