Forums >> Revit Building >> Technical Support >> Create form tool for components other than mass - Revit Architecture 2012

matheusdiniz

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Joined: Mon, Jan 17, 2011
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Hello,

I am having trouble making a part of my roof using only the tools for normal components (extrusion, blend, revolve, sweep amd sweep blend). I made it as a mass using the create form tool and model lines. Ideally it would be better to have it as a roof component.

I'm not sure how to explain how i made the mass, but it is kind of a blend of two profiles at almost 90° angle from one another.

I have a curved sweep blend with triangular profiles that ends in a V shape in plan. The form is a blend between the two profiles of this V.

Maybe it gets clearer in the attached image. The element in question is the blue selected one.

Is there any way of making that as a roof component in revit 2012? Is the create form tool available for non mass components in other versions of Revit?

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pijpiwo

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Joined: Fri, Sep 3, 2010
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Is this what you’re looking for? From your description, it’s hard to tell. Looking at your picture, I think it could be. It’s made from two elements - roof by footprint and a sweep.

If it’s not what you need, please post more screen shots or upload your roof so we can take a better look.

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matheusdiniz

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Joined: Mon, Jan 17, 2011
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I'm not sure if what you did applies here. But these forms are hard to understand properly even with all the views in your image.

My roof is kind of like an overpass. It is curved in plan and it slopes up. I did it as i would do a street, with the sweep blend. The problem is how to finish it, since i would like it to be like in your model, but it is not a regular form.

I tried sweeping a profile, but both sides are different. I would have to extrapolate both profiles to do a sweep blend. If i was using almost any 3d modeling software it would be very easy to do, using a 3D snap to make the volume. It was relatively easy with the create form tool in Revit, but i think that is only available for mases, which i find strange.

Is the curve you used to sweep your roof sloped?

Here are some more views of my building.

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WWHub

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Joined: Tue, May 16, 2006
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Do you understand modeling in place - roof category?

You can do all the normal extrusions, sweeps, blends, revolves and you can use voids using the same processes to furthur modify your solids. 

Does the in-place roof have the sub-components like the normal roofs?  No - each 'layer' would have to be sperate if you really need to model them but the resultant roof is a ROOF and will act and host like a roof.

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matheusdiniz

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Hi WWHub and pijpiwo,

I managed to extrapolate the two profiles to make a sweep blend. It was a cumbersome process, but it worked, kind of.

The shape is slightly irregular, and the create form tool did a better and more accurate job, but the differences are small enough to be ignored in this case (less than 1mm).

Ideally it should be possible to make a mass into a solid component of any other kind or make the create form tool available for other kinds of in-place components. Do you guys know if newer versions of Revit do this?

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