Revit Architecture: Modelling Irregular Walls


Quite often the walls that we need to model are not perfectly parallel. This can be these case in plan, section or both. In this tutorial we will see how to model walls that are irregular in plan. Many existing historic buildings have walls that are far from parallel in plan and this technique is ideal for modelling such walls.

In order to model our walls, we are going to use the “Model-In Place” tool to manually create the Extrusion for our wall….



The Model-In Place tool can be found under “Component” on the Build panel, under the Architecture tab. If we select this command, Revit will ask us to assign a category for our element. We need to choose the “Walls”…


Once we have selected the Category, Revit asks us to choose a name for our new model component. I will just choose “Wall 1”. We now have access to a range of modelling tools such as Extrusion, Blend, Revolve, Sweep, Swept Blend, etc. (In future tutorials,  I will go through step-by-step the use of each of these tools).


For now I am going to use the Extrusion tool to model my irregular wall. I choose “Extrusion” and draw the boundary of my wall in plan….


You can see that I’ve really over-emphasised the irregularity of the wall, for the sake of this demonstration. I can now go ahead and click the “Green Tick” to get Revit to create the Extrusion based on the profile we have just sketched. And here is my finished wall….


Now the interesting thing is that (because we chose “Walls” as the category for our In-Place Component) Revit treats this object (for the most part) as if it were a regular Revit wall. For example, we can place Doors and Windows into it- just as we would with a regular Revit wall….


It’s visibility is controlled (as you would expect) by the Overrides applied to the “Walls” category. So all of your usual Graphic Overrides (Halftone, Line Weight, Cut Pattern, etc) will work just fine with these objects.


You may have picked up that I said “in the most part” above, when comparing this method of wall creation with the walls created by the standard Revit wall tool. When you select this in-place element, you will “not” see the “Attach Top/Base” options that you would normally see for a system-family wall. So if you need to edit the profile of your wall in elevation (as well as plan) you are going to need to use a slightly more advanced modelling option.


If you’re new to Revit Architecture, you may be interested in my freeComplete Beginner’s Guide to Revit Architecture84 part video tutorial course

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