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Forums >> Revit Building >> Technical Support >> Arched Cellular beam Problem

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Tue, Sep 6, 2011 at 10:20:05 AM | Arched Cellular beam Problem




Joined: Wed, Apr 1, 2009
54 Posts
5 Stars: 1 Votes

I have been given a project to design a pair of arched circular beams (similar to the ones in the attachment) for an external seating area but I am finding it really difficult to even know where to start.I feel that it is one area where Revit struggle’s with designing because I haven’t found a way how to correctly draw an arch in elevation and create a mass on that plane.So does anybody know how I would go about creating an arched beam ?Can It be created with the in-place mass tool within a project or is it a case for the conceptual mass tool ?And what are the steps I need to take to complete my task

Thanks for your time

Edited on: Tue, Sep 6, 2011 at 5:22:23 AM

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Tue, Sep 6, 2011 at 5:59:41 PM | Arched Cellular beam Problem



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Joined: Tue, May 22, 2007
5921 Posts
4 Stars: 200 Votes

An "In-Place" is enough, create that in the right category.


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I Hope and I Wish to LEARN  more, and more, and more.... REVIT

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Wed, Sep 7, 2011 at 12:54:25 PM | Arched Cellular beam Problem




Joined: Wed, Mar 12, 2008
322 Posts
3.5 Stars: 7 Votes

You need to learn how to create families.  I personally would create it as a .rfa family loaded into the project.  I guess you aren't too familiar with families, so let me try to give you some general advice.

1.  The Family editor environment is the same as the .rvt project environment.  You are always modeling on planes.  In this case, you would model your geometry on the front or rear plane.  If the geometry needs to rotate along the XY axis (off-plumb) then you can nest the family. 


2.  You need to create a skeleton of the functionality (parametrics) you with to incorporate.  This depends upon the geometry, but a single arc (semi-circle) will require very little skeletal structure.  How to create a skeleton?  With reference planes and parametrized dimensions.  This is the rule of the thumb: Reference planes/lines first, then dimensions, then geometry, then testing.  I'm sure you can fine a video on youtube explaining the basics of parametric family creation.


3.  Use a sweep, or swept blend to create the geometry.  You basically need to extrude a profile along an arched path.  Pretty straightforward.


Learn how to create families- they are really powerful and fun.


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