Think Revit Can’t do That? Think Again!
When developing and modelling your BIM there will be features and components that Revit’s Build, Circulation and Family template tools will not be suitable for. It is at this point that you will need to consider using Revit’s ability to model in situ in the Project environment, and it is then that you will need to understand and master Revit’s ability to “model anything anywhere”. This blog will look at the basic methods of establishing where you will model and how to generate the forms.
Justin Gillard, BIMgineer® and Sr. BIM Consultant
2. Face Based Modelling: Only flat Faces of the model can be Selected and used for Sweeps and Swept Blend or Extrusions and Blends . Revit will not allow you to Select a curved surface
3. Edge Modelling: Revit can Sweep and Sweep/Blend along Edges, Paths and openings present in the model
Having decided which of the above methods is relevant to the site and outcome required, you need to establish or create the Work Plane for modelling
To demonstrate the versatility and adaptability of the tools, let’s start with a Planar Form, Set a Face of that to Extrude from, then use Edges as a Path for a Sweep
Step 1) Have the 2D Plan View Level 0 and 3D View open simultaneously
Step 2) Set the active Work Plane in both the 2D and 3D View to be Level : Level 0 (see below). Note different Views can have different active Work Planes
Step 3) On the Architecture Tab click Component>Model-in-Place then Select the Category: Speciality Equipment and type a Name: “Freeform 01”
Step 4) The Form tools are now available. Choose the Form tool: Extrusion
Step 5) In the 2D Plan View for Level 0 use the Draw Rectangle tool create rectangle of equal lengths and height. Below is a 5m cube
Step 6) Now Set the Work Plane to the side Face of the cube to commence the next form. Note the Work Plane Grid can be Aligned to the cube’s Edges.
From the Form tools choose: Extrusion and the Draw Polygon tool. Note: You can Snap to the Work Plane Grid as seen below
Step 7) To explore versatility we will Set the next Work Plane to a Face on the Extruded Polygon.
The process of using Pick a plane and Selecting a new Face to model upon can be repeated and limited only by need or imagination. Let’s move on to Edge modelling
Step 8) Select the Sweep tool and Pick Path for the Sweep Profile to follow. Note the Profile plane can be Selected and Moved to a more visible or convenient location.
Step 9) With the Work Plane Grid Spacing set at 100mm and Aligned to the edges Draw the required profile using the Work Plane Grid to Snap to
A final tip on versatility is exploiting the ability to Select and relocate your Form using Pick New (Work Plane) (Work Plane). The other forms follow as they are Hosted to it.
Select the highlighted Extrusion below, Pick New (Work Plane) and relocate the Form to the top of the Extrusion
Model-in-Place Families create additional Instances for every copy made unlike Component or System Families. This will cause your file to increase, so use accordingly
More Tips From the Think Revit Can’t do That? Think Again!
Stairs and Rails – https://nittygritty.net/think-revit-cant-do-that-think-again/
Skinning the Mass – https://nittygritty.net/revit-blog-series-justin-gillard-think-revit-cant/
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