topic Re: Smooth wall transitions in Modeling

Smooth wall transitions

Anonymous — Wed, 28 Jan 2009 01:09:28 GMT

I am trying to create smooth wall transitions on a S curved wall (in plan).
When I make the the walls they don't intersect cleanly. What am I doing wrong?

Re: Smooth wall transitions

Anonymous — Wed, 28 Jan 2009 02:51:30 GMT

I assume that when you say "intersect" you mean the point of inflection
of the "S" curve. The two arcs must be perfectly tangent or you get
a break line in 3D. Even if the arcs are tangent there will be a joint
line in 2D which you can eliminate by disabling the appropriate wall ends.
Peter Devlin

Re: Smooth wall transitions

Anonymous — Wed, 28 Jan 2009 03:36:24 GMT

I need to add that in AC 12 the wall reference line must be continuous,
meaning on one arc the reference line is on the convex side and on the
other the reference line must be on the concave side.
Also, you might need the attached .PDF which shows how to construct
perfect tangents.
Peter Devlin

Re: Smooth wall transitions

Rod Jurich — Thu, 29 Jan 2009 01:36:13 GMT

Peter wrote:
/.. the attached .PDF which shows how to construct
perfect tangents.

Again great service, many thanks Peter

Re: Smooth wall transitions

KeesW — Thu, 05 Feb 2009 10:31:08 GMT

Peter
Those diagrams take me back to when I used to teach manual drafting and geometry! Haven't seen them for ages! Of course, when we did them manually, joints weren't always perfect but with CAD we can get perfect connections. I do a lot of curvy decks and am always having to dust of my old geometry textbooks to remind myself how to do it.

Thanks Peter, for your refresher course!