🖇️Download the script and the test file:

This is the new version of the script (27.10.2021) Dynamo 2.0.3 and Revit 2019

Topography_solid_v2.rar

🍀What's new:

• Added the ability to change the order of layer subtraction
• Inherit material from topography
• Put all layers into one family
• Fixed a few bugs
• The script now works even in Revit 2022

• Old version here:

History of Idea

⛰️ Topography is probably the only element of the Revit system that has MESH geometry. This doesn't always suit designers, so I was interested in the question of shaping a solid element using topography. So, after much experimentation with RevitAPI, I found perhaps the best way to turn a topography into a solid and load it into a project.

The task from the start was a little crazy because for similar tasks there are Civil3D, Rhino and a number of other programs that allow solving the problem in a much more flexible way. But I was madly curious if it would work in Revit because I already had all the functions to assemble this solution. All I had to do was to put everything together. However, the task turned out to be more complicated and interesting than I thought.

This script will be useful for:

• Designers working with topography up to 10,000 points have the task of cutting complex-shaped cavities out of topography; splitting topography into layers to calculate volume; Seeing topography shape in 3d without a section box.
• Developers who want to learn how Boolean operations work in RevitAPI; how to create new families through python; how algorithms for grouping, sorting and optimizing curve loops work.

How does it work?