Forums >> Revit Building >> Technical Support >> Generic Model - Wall Based - Model wont align to different Wall Thicknesses

pamoroso

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Joined: Mon, Oct 1, 2007
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WWHub

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Joined: Tue, May 16, 2006
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Wall hosted families are hard to do for new users because they don't understand the associations in revit.  In most cases, you would be better off to create a face based family but in this case, it appears you may also use a wall void. 

So to get around these problems, I use a hosting reference plane.  In essence, I create a face based family within the wall host.  I start out by creating this plane far away from the wall.  I don't want anything associating with the wall except for my wall cut or void.  This plane might be 2' away from the wall initially. 

I add a parameter to move this plane in relation to the plane of the wall I want to control it from.  This might be a type based parameter or instance.... for example the setback of a masonry door frame from the exterior face of a wall.

Now, build your components around this plane.  Test it in the model by adjustig this setback parameter.  For a face based object, the parameter would go to the face of the wall and be 0 when done. 

NOTE:  It is hard to add a reference plane after building the components.  Much easier to start with the plane in place.

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pamoroso

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Joined: Mon, Oct 1, 2007
65 Posts

I figured out a solution. I created a reference plane 2' off the wall. I copied my generic model 4' off the wall. I grouped my generic model, and then aligned and locked to that reference plane. So now that is locked with my reference plane. I created a 'Setback From Wall' parameter, from that reference plane to the face of the wall. Works like a charm with varying wall thicknesses!  

Now my question for the future is... okay I get the idea now that when using wall based families... to start off with a new reference plan off the wall. What do you do for plan extrusion modeling? For example in this family I created... there were a lot of plan extrusions I created that would not be associated with the reference plan. How do I make that reference that vertical plane? Same goes to the sweeps I create off that reference plane?

Thanks again!  

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WWHub

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Joined: Tue, May 16, 2006
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Using a group here is a wrong use of groups.  This could cause slow downs in your project.  You are much better off to learn how to make the components without grouping them.

You can have as many reference planes in a model as you need, including horizontal ones.  NOTE: You should always identify these plans .... give them a name.

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