Urgent Toposurface-into-ACAD Solid question

[Gadget Man]

I am really sorry! I trully am! I tried to find this topic using Search before posting here and I can't.

I urgently need some good soul to either point me in the right direction (where to find the info) or explain to me once again how to convert (export) a Toposurface into AutoCAD SOLID, so than I could re-import it to Revit and use Void to take away all the CUT part, leaving me with the nice battered slope all around my pad.

I am sure that I have seen it described somewhere a few months ago... :( , but I can't find it anymore!

Thank you for your help in advance!

[beegee]

Create the topo and export the 3D view to dwg.

Open a massing family template and import the dwg file.

Load the massing family into the project and create walls or roofs by face.

[Gadget Man]

Wow! That was quick - as usuall! Much appreciated! Thank you! :)