Instructional Demo    CES322650
Feature Lines: Best Practices and Intuitive Site-Design Workflows
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Site grading is a complicated task, and users are presented with a number of different options. Corridors are stable but require deep knowledge of the toolset; Grading Objects are easy to use but unstable. Feature Lines are a great option for site grading because they are simple enough to be used effectively by newer users and are very stable. However, poorly drawn Feature Lines leave designers with choppy surface contours, flat spots, and an urge to draw contours manually. In this class, we'll review the fundamentals of Feature Lines and their interactions with surfaces. Students will be directed in workflows using the right Feature Line editing tool in the right situation. Students will then be shown how to best use the "Relative to Surface" feature (new in version 2018) and other examples of best practices for Feature Lines to optimize their designs. Finally, we'll cover a workflow for creating dynamic, variable-depth datum surfaces for parking-lot grading.

Key Learnings

  • Learn how to edit Feature Lines, and discover how they contribute to Surface TIN Line and TIN Point definition
  • Learn how to solve the problem of static Feature Line elevations by using the “Relative to Surface” command
  • Learn how to differentiate design data using multiple sites and prioritize design data with the Feature Line "Style Hierarchy"
  • Learn how to create intuitive models with regions of simple vertical behavior that automate the slopes of complicated horizontal data



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