The Wall Sweep is system family that uses a profile family to create a sweep along a wall surface.  Note that this applies to sweeps that are built-in to wall assemblies as well. However, you will not be able to see the origin of a built-in sweep by selecting it as demonstrated here.

Probably the most important thing you can take from the properties of the profile that is used for these sweeps is where the origin of the profile is.  If you select a wall sweep, you can see that the profile origin is shown just like the location line of a wall.  The two circle grips show the line that the profile lies on.

Why is this important?  Let’s look at what happens when this “origin line” crosses an opening in our host wall.

Origin Line not intersecting opening.

Origin Line intersecting opening

So let’s take a quick look at how this applies to our custom profiles.  Where do we actually define this origin?!??

As you can see here, the two reference planes that are selected have a property “Defines Origin.”  You can define origins as you wish in your profile families, but I would suggest just leaving them as they are and work around them.  A quick demonstration of how this custom profile behaves on a wall opening:

So there we have it.  I’ll leave it to you to do what you want with the information!  So thanks again for stopping by, I hope you have learned something new that you can use to impress your boss(es), and as always I hope to see you again for another Revit TotD!

-Carl Gibson

As usual, you can view this post in its original format at: http://revittotd.com/01/771