From LinkedIn:
This revit video sheds light on how to generate Helix Ramp with topography by Dynamo for Revit.
Dynamo for Revit expands building information modeling with the data and logic environment of a graphical algorithm editor. It is very flexible and associated with a powerful Revit database. It creates a new approach for BIM.
The objective of dynamo is to simplify AEC workflows in Revit and facilitate the users to avail the database of Revit outside of the restraints of the interface.