Have you ever wanted to rationalise your Topography as a Massing form, perhaps so you could use Divided Surface and panelization tools on the topo?
Here is one method:
Make a Site family with a vertical model line and height parameter (see sample file at end of post)
New Project – Make a Toposurface (or existing project with Topo)
New in-place Mass
Place the Site family on the Topo in one corner – it will detect the Topo and host itself to it, even though you are in the Massing environment
Copy a certain number of times in X direction. Basically, you are forming one part of a grid sampler…
Make a new Adaptive with the same number of points as step above. I made a 20 point adaptive.
Select all the points, make sure they are Adaptive, Spline through Points
You now have a 20pt Model Line spline… Load into Project
In Massing environment, place the 20pt component by clicking on the very top of the vertical Model Lines from the Site family (as you place it, the points will change to a smaller point size to show it is “living” on the top of that line)
Now, select the whole row of Site families and the 20pt component and copy it along the other planar axis (this is the other part of the sample grid mentioned in step 5)
As the elements are copied, the Site families will host themselves to the Topography, and the Spline will adjust accordingly
Now, select all of the spline families and Create Form!
You can adjust how close to the original site the Massing form is by using the height parameter of the Site model line family
Recent post by Jay Holland demonstrates the methodology they adopted to create the Revit model for a multilevel residential project. As it had lots of repeatable elements, its interesting to hear how Massing and Groups were used to limit the impact of changes and reduce rework.