topic Re: Cut beam from ceiling / floor in Revit Architecture Forum

Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 09:35:13 GMT

Hello,

I'm create a model for an industrial building. (I do it for myself, to learn how to work with revit)

I made a special beam and now i overlayed it with a ceiling. The ceiling should be cut with the beam, so that the beam will not be changed.

At this point i realized that the "geometry cut" doesn't work with beams and ceilings, but the join geometry does. (Don't know why?)

Thats what its now look like:

Thats what it should look like (please focus on the beam and ceiling):

Do i need to make three ceilings (left, right, top) or is there a Solution with one?

Thanks for youre time.

Re: Cut beam from ceiling / floor

BIM.Consultant — Thu, 19 Jan 2017 11:01:40 GMT

If you have 2 solid geometries, you will use join geometry. Cut can be used if you have both solid and void so that the void will cut the solid geometry.

Re: Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 11:08:35 GMT

How could help me this answer with my Problem?

I can cut a beam with a column and both are solids, right?

So why i can cut them and not the ceiling?

And is there a solution to my problem?

Re: Cut beam from ceiling / floor

BIM.Consultant — Thu, 19 Jan 2017 11:17:38 GMT

No, cut geometry between columns and beams wont work either. However, you can use Cope if both column and beam are steel.

Wherever you have 2 solid elements (such as beam and ceiling), you will need to use join geometry.

An example of using the cut geometry tool is creating model in place that have solid extrusion then create void to cut this solid extrusion. Model in place can have void and cut other elements that are system families such as (wall/floor/ceiling/roof..) but can't cut loadable families such as columns and beams.

To cut those, you need to create a mass form, use join geometry, then uncheck mass visibility in your view,

Re: Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 12:02:23 GMT

But I can cut a column with my selfmade beam.

Before cut:

After cut:

But i can't do this with a ceiling.

From youre answer i can read that's not possible what i want to do, right?

Re: Cut beam from ceiling / floor

BIM.Consultant — Thu, 19 Jan 2017 12:31:03 GMT

Here you have used the join geometry tool, not cut geometry.

Re: Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 12:39:06 GMT

No i haven't.

But this discussion has nothing to do with the solution of my Problem, so thank you for your answers.

I will search on a other way for a solution.

Re: Cut beam from ceiling / floor

BIM.Consultant — Thu, 19 Jan 2017 12:44:56 GMT

I checked now, you may use the cut tool for columns and beams and it will appear like it worked. What is actually happening is that revit is joining the geometry between those 2 elements (NOT cutting). To confirm, use unjoin geometry and see the result.

This is describing for you exactly when to use join geometry and when to use cut. It's up to you to keep searching around 🙂

Re: Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 12:56:40 GMT

Unjoin geometry is not working, because i used cut geometry.

If i use uncut geometry, i get the beam and column back, without any hole or something.

That means for me, revit truely cut the beam and column.

My actualy questions was: "Do i need to make three ceilings (left, right, top) or is there a Solution with one?"

Re: Cut beam from ceiling / floor

ToanDN — Thu, 19 Jan 2017 13:55:35 GMT

You could draw 3 ceilings. Or you could introduce a void extrusion or void
sweep, using the same profile with the beam, to cut the ceiling.

Re: Cut beam from ceiling / floor

ToanDN — Thu, 19 Jan 2017 14:28:43 GMT

Try Join Geometry then switch the Join Order.

Re: Cut beam from ceiling / floor

ToanDN — Thu, 19 Jan 2017 17:53:00 GMT

Here is what I got using Join Geometry a Ceiling and a Beam.

Re: Cut beam from ceiling / floor

Anonymous — Thu, 19 Jan 2017 18:09:09 GMT

Thanks for that answer. I think i get it, it's better to use joing geometry instead of cut geometry when i create a model.

I would use your solution, but my beam has a hole in it. When i overlay the ceiling and join them together, there will be a part of the ceiling in the hole.

So the easiest way is to make 3 seperate ceilings.

Thanks for your time and your answers.