Forums >> Revit Building >> Technical Support >> sweep on spline in different planes

BouwbureauSklad

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Joined: Thu, Jun 16, 2011
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Hi there,

I'm trying to make a sweep in several directions. I'm using a spline as a sketch path but how can I bend this sweep (railing see image) in more than one reference plane. I guess it's a simple fact that I'm not seeing. Anyone has a suggestion ?

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teafoe5

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Draw reference lines representing the path that you want your sweep to follow, then sweep, pick path in 3D to make it easier, and finishe like a normal sweep

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revitape

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teafoe REALLY simplified that... you are going to want to draw a lot of reference planes as well and name them so you can choose them as the plane you want to be drawing on. this will make your life a lot easier since you are working in more than one plane. it is especially important to do this too if you want a nice smooth sweep because you will need to fillet your ref lines. otherwise you will see any joints.

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BouwbureauSklad

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Thanks for your answers. Well I managed sofar but I couldn't find a method to fillet the reference lines. So I can't get thes smooth rounded corners. There is no fillet command active when opening the in place model.

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TKennedy

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It can be difficult to adjust, but something I have done is use solid and void extrusions to create a shape with edges along the path I need. You can either leave them in the family and turn off the visibility (better if you're going to adjust it later, or just delete the extrusions when you are done.

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revitape

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Doesn't look too bad but I don't know why it wouldn't let you fillet the lines. You might have to draw a tiny straight line segment in the plane you are working in that joins with the previous line. As you can see in the picture I drew all the green circled lines in one plane and all the red ones in another. I originally did this in a project as an in place but also did this in a family and attached it for you to have a look. Hope that helps. 

Also, TK's suggestion isn't a bad one either. Sometimes it is easier to control extrusions (certainly less planning involved) and then picking their edges for the sweep. I have had issues with that though when you go to hide them or delete them, the sweep gets completely screwed up. This doesn't always happen though...

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BouwbureauSklad

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Hello again,

I guess I owe you an explanation how I went on. It was quite fuzzy but I finnaly made it. The problem whith this tube was that it had to bent in two different directions. Not only vertically but at the same time horizontally. That's why the second suggestion here didn't work for me. At the end the easiest way was to make a mass whith several faces. In picture klembord02 you can see a little blue face that had to be a temporary reference plane for making a bend in the tube in two directions. I made a reference line via the start-end-radius-arc command. Fillet arc wouldn't work. I changed the sweep then via pick path 3D edges. It's a pity that you can only use sketch path or pick path and not both of them in the same sweep. (But of course there lots of pity's in Revit imo.)

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itsmyalterego

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Joined: Thu, May 28, 2009
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This sounds like a job for adaptive components! 

Just whipped up an 8-point spline that adapts in all three dimensions.  just click-click-click on five points in whatever plane.  pic related.  spline passes through points, not around.   If you draw it in plan, without a host, you can drag the control points in X-Y-Z axies.

EDIT:  i can't delete the 5-point spline family.  I think the lower one is 8 points?  ...?  how frustrating.

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