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Forums >> Revit Building >> Technical Support >> Elliptical Roof
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Joined: Wed, Sep 1, 2004
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Any ideas on how to create a regular ellipse roof? Doesn't seem like you could use the solids rotation, and I don't understand what others have referred to as 'roof by section'.
Thanks for the thoughts. -OSir
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Joined: Mon, Jan 12, 2004
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An elliptical roof isn't easy, unless its flat, or the whole roof is on a constant slope? I assume its raised in the centre and evenly curved around? One method would be to segment the roof, ie straight lines not curves. Or create an in-place family. Remembering you cannot have an elliptical path with a curved profile for sweeps and revolves. You can however have a circular path with circular profiles?? Go figure... So you could try creating a serious of curves trying to match the ellipse to get the path...
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Yes, the intention is to have the roof rise to a single point, so the slope will actually vary as you go around the walls. I didn't know you can't sweep around an elipse... that makes it even tougher. it sounds like a segmented roof may be the best way (same way it would actually get built). Thanks for the clues.
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Joined: Mon, Jan 12, 2004
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Correction, you can sweep around an ellipse providing all lines in the profile are straight...
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Ended up creating an In-Place Roof family using Blend, defined the top of the fascia ellipse, then a very very small ellipse for the point. Then added the Fascia by extruding an ellipse. Finally, moved the roof form down to where the rafters would sit on the topplate, and added a smaller concentric elliptical void so thatthe ceiling would be high enough.
One unresolved problem I had was that another adjoining roof would not automatically merge , or clip to the eliptical roof.
Also, I found out you can't offset eliptical lines.
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