How to Create a Freeform Roof in Revit

Step-by-Step Guide

1. 1

   Step 1: Extract Plan – export a 2D DWG floor plan from your Revit model for reference in Rhino.

   You can export a 2D DWG, but be careful when importing 3D DWG data into Rhino
   3.0 (no problem in Rhino
   4.0) without using the
   3.0 bonus tools.
   
   Check the units in Rhino under Tools-Options then either Import or Insert the DWG plan as a reference.Tip:
   You can use horse’s dimensioning tools to verify the scale of the DWG insert.
2. 2

   Step 2: Create Form - we will generate a ‘draped’ form using Rhinoceros.

   This is done simply by drawing a shape curve and a straight curve, then using the Extrude CurveAlong Curve tool to generate a surface between the curves.
   
   The surface can then be transformed into a solid using the Extrude Surface tool.
   
   You can import just the surface into Revit, but the flat surface will be difficult to visualize on-screen. ,, You may have to adjust its XYZ location before finishing the mass which can be accomplished in plan or elevation. , Pick the top or bottom face of the mass element. ,
3. 3

   Step 3: Create Model file – Select the surface or the extrusion

4. 4

   Step 4: use File-Export Selected Objects and select the SAT file extension.

5. 5

   Step 5: Generate Revit Roof – In Revit

6. 6

   Step 6: create a new mass and import the SAT file from the previous step.

7. 7

   Step 7: Once located properly

8. 8

   Step 8: use the Roof By angle tool to generate a roof using any roof type.

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   Step 9: Finally

10. 10

    Step 10: select the chain of interior roof as the target.

Detailed Guide

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