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Thu, May 10, 2007 at 8:14:18 PM | creating mass through solid sweep

#1

amaruna


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Joined: Tue, Aug 2, 2005
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hi I'm working at a project involving a complex steel structure roof.I need to create a mass using a spline profile and also a circular section. I wanted to do that using the solid sweep command but apparently I can't have both a curved path and circular section. The compromise was to use a curved path and for the section to use a  polygon having as many sides as possible . I don-t really like that though....because if I look at the structure closer i can see the edges.

If anyone has any ideea about how cand i do this please help me Smile 


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Thu, May 10, 2007 at 8:51:35 PM | creating mass through solid sweep

#2

TomDorner


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Can you post an image of what you are after?

Remember that creating masses is not only an additive but also a subtractive process.  Starting with a positive mass and subracting from it with voids is the best way to create complex shapes.

 


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Fri, May 11, 2007 at 10:53:04 AM | creating mass through solid sweep

#3

amaruna


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I concidered using the void command...but i think it's even more difficult to do that.the most convenient way would be to create a sweep with a curved profile and a circular section.looking forward for suggestions or advices.

the photo I've attached is of a structure (the international airport in osaka ) I've found over the internet but I think it gives a good example for the kind of structure I'm trying to create.



Attached Images

23222_5kansaiinternationalairportosaka.jpg

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Fri, May 11, 2007 at 3:07:06 PM | creating mass through solid sweep

#4

TomDorner


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You can do a circular sweep on a curved path, not sure about splines though.

A trick I learned from James V. at SOM they used on the Freedom Tower was to apply sweeps to edges of a void.

I've attached a quick example of this method for you to reverse engineer.  The voids can be parametric as well giving you real power to possibly build what you are attempting.

 



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Sun, May 13, 2007 at 10:30:43 AM | creating mass through solid sweep

#5

amaruna


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Joined: Tue, Aug 2, 2005
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unfortunately I wasn't able to open the file as I am working in an older version of revit. I've attached a photo with what I've come with so far.As I will surely have to make many changes  on the project I'll try to  take your advice. The mass created so far was through sweep with  curved path and polygon/circle profile . Thanx so much for advices Smile

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23268_met.JPG

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