GWB Ceiling

[bgauthier]

Hi everyone. I was wondering how to create the frame for a dropped GWB ceiling. If I try to create it as a small wall that will attach to the lower par of the structure and then draw the ceiling, they don't clean up. What am I doing wrong this time.

[dgreen.49364]

This is one of those things that Revit doesn't do perfectly, IMO. What we do is draw the wall with the Basic Soffit Wall, draw the ceiling, use the Join Geometry and join the wall to the ceiling. This will clean it up in the ceiling plan. However, some drafting is required in section and detail to clean it all up nice and neat. There are other ways to try and go around this but they are all pretty intensive and not worth it, I believe. I try to stick with "Model what I need to and draw the rest in 2d." Hope that helps.

[sbrown]

Revit actually handles this beautifully. See attached. Basically you need a wall system Gyp over mtl studs.(unlock the gyp. layer) then a compound ceiling created to extend into wall core and then set the base offset on your wall type.

[dgreen.49364]

Scott, I've seen you post this before and I can never seem to get it to clean up right. I can get to the point you show, but in my ceiling plan, I end up with an extra line for the gyp. The only way I know of to clean that up in my ceiling plan is to join geometry and when I do that , it wipes out the nice cleanup in section and I'm back to square one.

It seems like this is a bit of chasing one's tail around and around and at some point you have to decide what to leave alone and what to clean up in 2d.

Am I totally missing something here because I've been through this exercise many times to no avail?

[bgauthier]

I tried it as well and I get the exact same result. Join geometry in the ceiling plan and it doesn't clean up right in the section view or the other way around.

[sbrown]

So in section it looks how you want it, but in plan you have a double line(5/8"" Wide). The easiest solution is to hit it with the linework tool set to invisible. But you know that. I guess its time for a support request. Personally since the detail overides the plan, I prefer the section look right and be modelled correctly, then use the linework tool on the plan or leave it alone depending on the view scale you maynot even see the extral line. You could also now in 2008 just overide all the walls making up the soffit and turn them off.

[aaronrumple]

I think I finally tracked down Revit issues with the bonus line not being eliminated in the RCP when join geometry is applied.

Of course make sure the finish is the same material for the ceiling and soffit. But more importantly - make sure you have enabled wrapping at ends for the wall type. Note the attached file. The one that is set to wrap at ends deletes the bonus line. The one without wrapping - you get a bonus line. This seems to be consistent with what I see in other's screen shots.

This will save a lot of time...

(Note you don't need the extra base extension offset as Scott mentions. Just have the ceiling line go to the core of the wall.)

[sbrown]

Awesome, one other note that is odd. is the finish HAS to be on the Exterior side of the wall for it to work.

[aaronrumple]

Yes - I found this all very strange and will submit it to Autodesk... I'm sure thet'll mark it down "for future development."

[sbrown]

The OOTB soffit wall type has the finish on the int. side so it doesn't work. I would argue a soffit wall the finish is on the exterior, interior being the plenum space. So its a quick fix. Good work.

[dbaldacchino]

Thanks for the tip Aaron. Another peculiar thing is that if you change the wrapping in your second example, the bonus line does not re-appear right away. Similarly, if you make changes to the wall in the first example, the bonus line stays. In both cases, you have to un-join and then re-join geometry to update the behavior. This can be very irritating and time consuming if someone makes changes inadvertently to the wall types and these conditions get messed up, because it won't be as simple as correcting the wall settings to make it work again.

[kingjosiah]

Sorry to resurrect an old thread....this is very helpful for our GWB ceiling/soffits.

In addition to this type of soffit we also have one with a GWB bulkhead only that transitions to a lay-in tile ceiling. I'd like to show in section and RCP the gyp wrapping back under thickness of the stud. See attached. Any suggestions on the best way to accomplish this?

Thanks,
Jon

[dbaldacchino]

The wall wraps on the vertical sides and won't wrap on the bottom as you're wanting it. You could model an in-place wall with extrusions and add the materials yourself, but I don't think it's worth it. This is probably a case where adding detail linework/components to embellish your detail view is probably what you need to resort to.

[aaronrumple]

Sorry to resurrect an old thread....this is very helpful for our GWB ceiling/soffits.

In addition to this type of soffit we also have one with a GWB bulkhead only that transitions to a lay-in tile ceiling. I'd like to show in section and RCP the gyp wrapping back under thickness of the stud. See attached. Any suggestions on the best way to accomplish this?

Thanks,
Jon

The gyp. return is pretty simple. Just make a wall style that uses a Split Region. Edit the wall style and split the stud horizontally. Assign a new gyp. bd. material to that area. It would be nice if you could just merge the two gyp. bd. areas - but that produces an error.

The reveal is just a simple wall hosted sweep.

[kingjosiah]

Thanks Dave, Aaron--

Pls forgive the delayed response...it was a busy week with project deadlines, the adesk tour, and my son's birthday. I was thinking like Dave that the best solution was detail linework, but the split region suggestion worked perfect.

Thanks again!
J

[dbaldacchino]

I like Aaron's solution. I have not found much use for the split region tool so far. This would classify as a good reason to use it.

[ycymry]

I know this is a 2 yar old post, but I just tried to make this work in Revit 2010 - split region on the stud layer, reassigned to the finish layer, and I get an error that "the core should contain a non-membrane layer". Which it does contain a non-membrane layer, the structure. Am I doing something wrong?

[nancy.mcclure]

If the materials share the same region of the wall, they must match in function. See attached image.

[ycymry]

Ahhh.... I get it. I was trying to assign it to the finish layer, rather than a new layer in the core. Thanks! I'll try that.