Forums
Forums >> Revit Building >> Technical Support >> Elliptical wall design causing headaches (2011)
|
|
active
Joined: Mon, Jan 12, 2009
61 Posts No Rating |
Our office is starting out on quite a large scheme enclosed by an elliptical perimeter wall - with the design/construction presently at the point where the intent is to maintain a smooth curving brick facade for the outer skin, and a faceted (to timber dimensions) internal skin. Having worked with ellipses in Revit before, (but never on such a scale of size or complexity) I was quite nervous of the design, mainly down to the number of "Revit can/can't" conversations I was going to have with my office peers who look to me for a great number of answers. My proposal seemed sound, model an extruded ellipse mass and host to face - which has sufficed so far with work up to design concept and planning - but now the work's moving forward and despite being keen to keep as much in Revit as can be I just keep drawing a blank on how to go about it. I've just been experimenting with using two-concentric ellipse extrusions in the same mass, one to handle the face-placement of the smooth exterior, the other to handle the interior wall - for which I thought to use a curtain system (to keep it faceted) but straight away the inability to use basic wall type in a curtain system (?) stumped me. Then I used the curtain system's panel faces to "pick" the placement of a (basic) internal wall type - which (once the curtain system is hidden from views and filtered out of schedules) gave me nearly what I needed.... but.... Inserting windows (and doors) in either the exterior or interior "skin" wall doesn't allow me to use any combination of cut/join modifying tools to cut both walls with the elements, as per the attached jpeg. (green=mass, red=ext. skin wall, blue=int. skin wall, black=curtain panels) I guess we could coordinate openings in one of the walls to follow the openings in the other; but before I propose as much (to the cries of disbelief that will only fuel dissatisfaction with Revit) I wanted to ask here if anyone might know a better method I might employ for such a task? Here's hoping...
Edited on: Mon, Dec 20, 2010 at 3:20:18 PM
|
This user is offline |
|
|
|
site moderator|||
Joined: Tue, May 16, 2006
13079 Posts
|
Why use a true ellipse, are you a purist? When we drafted, we never drew a pure ellipse because you really can't. They are also hard to define for construction. So why do it? When we hand drafted you created a very nice "visual" ellipse using just two different radius curves. Very easy to draw, define and REVIT can handle these. Nobody will ever know the difference !!!!
|
This user is offline |
|
|
active
Joined: Mon, Jan 12, 2009
61 Posts No Rating |
I'd like to think I was a purist, but there's nothing pure about THIS ellipse, it's exceptionally contrived and nothing like anything I would design. But despite me thinking it'll end up looking like a dogs dinner, my director, the "designer" in-charge, is adamant. As such I still need a solution, so I'm curious for a bit of clarity on what you mean by "two different radius curves" especially given this part of your post :"Very easy to draw, define and REVIT can handle these.". Thanks
|
This user is offline |
|
|
site moderator|||
Joined: Tue, May 16, 2006
13079 Posts
|
When we hand drafted and needed an ellipse (before templates '60's), we always used an approximation as described in the first link below. http://etc.usf.edu/clipart/76200/76201/76201_ellps_4cntr.htmThis link shows how close an appromation is to a real ellipse - note that very long, thin ellipses donot work as well. http://www.uwgb.edu/dutchs/MATHALGO/Ellipses.HTM
|
This user is offline |
|
|
active
Joined: Mon, Jan 12, 2009
61 Posts No Rating |
Their heads will explode when they open those links! : D So your suggestion is to build an approximated-ellipse mass family and continue that way? Or draft / use a linked .dwg that follows those approximation-methods for wall placement?
|
This user is offline |
|
|
site moderator|||
Joined: Tue, May 16, 2006
13079 Posts
|
Yes, if you can use simple arcs, Revit works fine.... and I always prefer placing walls rather than starting with a mass. Seems stupid to me to use a mass unless you are doing massing studies.
|
This user is offline |
|
|
active
Joined: Fri, Sep 22, 2006
759 Posts
|
I ditto the approach that WW has put forward. And as for the pour fellow that will have to build it he will do as WW, has suggested.
|
This user is offline |
|
|
|
Similar Threads |
Elliptical sloped roof in Revit |
Revit Building >> Technical Support
|
Thu, Jan 23, 2014 at 6:01:52 PM
|
1
|
ELLIPTICAL STAIR |
Revit Building >> Technical Support
|
Sun, May 15, 2011 at 8:27:40 AM
|
3
|
Elliptical concrete columns |
Revit Structure >> Technical Support
|
Tue, Aug 15, 2006 at 5:46:28 AM
|
4
|
openings in elliptical wall |
Revit Structure >> Technical Support
|
Tue, Aug 25, 2009 at 4:05:27 PM
|
1
|
Elliptical stairs help |
Revit Building >> Technical Support
|
Thu, Sep 1, 2011 at 10:15:49 PM
|
14
|
|
|
Site Stats
Members: | 2030517 | Objects: | 23003 | Forum Posts: | 152205 | Job Listings: | 3 |
|