Snap object to topographic contour

[jcml]

Hi,

I used Revit some years ago and I'm back to it trying to remember everything. Google helps in most cases but there's something I haven't been able to find.
Is it possible to snap objects to topographic contours?

Cheers

[david_peterson]

There was a great AU class that did that via Dynamo. It "converts" your topo to a mass and adjusts the mass to the topo more or less.
You can then find the intersect and build off of that surface.
I believe this was the right class.
http://au.autodesk.com/au-online/classes-on-demand/class-catalog/2015/revit-for-architects/as10613#chapter=0