topic Re: joining dormer roofs with main roof in Visualization

joining dormer roofs with main roof

Dave Brach — Wed, 15 Feb 2023 16:46:23 GMT

Is there a way to join dormer roofs with a main roof? Right now I just cut holes in the main roof in plan view, and the manipulate the shape of the dormer roofs in plan but it never looks correct on the inside

Re: joining dormer roofs with main roof

Karl Ottenstein — Wed, 15 Feb 2023 19:12:15 GMT

Does the usual selecting one roof and ctrl/cmd-clicking the edge of the other roof not work? The mansard roof looks like it would make this really challenging.

If nobody jumps in with exact instructions, perhaps you could select all of the roofs (main/mansard and the dormers) and save them as a module MOD and attach it to a post here so that nobody has to start from scratch to make sure that their advice works in your situation?

Re: joining dormer roofs with main roof

Lee Hankins — Wed, 15 Feb 2023 20:00:22 GMT

The cmd+click to opposing roof method Karl mentioned should sort this. Dormer windows made from walls and roofs is witchcraft but it can be made to work. I find selecting all the roofs and showing only those in 3D using F4 or show selection in 3D is really helpful when connecting roofs. Also dragging them apart from each other at the junctions also makes things a bit easier. I’d be more than happy to show you how over a Teams call or something.

Re: joining dormer roofs with main roof

Dave Brach — Wed, 15 Feb 2023 22:22:09 GMT

The CMD+click method does not work. As far as I can tell it only works with ridge lines of single plane roofs. At least I cannot get it to work on complex roofs or joining valleys etc. Am I wrong? for dormers or cross gables I have alsways had to just create multiple roofs and manipulate in plan view. I just thought it would be nice to join them to gether

Re: joining dormer roofs with main roof

Karl Ottenstein — Wed, 15 Feb 2023 22:38:38 GMT

@Dave Brach wrote:

The CMD+click method does not work. As far as I can tell it only works with ridge lines of single plane roofs. At least I cannot get it to work on complex roofs or joining valleys etc. Am I wrong? for dormers or cross gables I have alsways had to just create multiple roofs and manipulate in plan view. I just thought it would be nice to join them to gether

Can you post the requested MOD file so one of us can try? It does work as far as I know... hopefully it is an issue with the method you're using. As Lee, I've always found success by pulling the edges fairly far apart before cmd-clicking.

At worst, you can use the command to convert the multiplane roofs to single plane ones.

Re: joining dormer roofs with main roof

Dave Brach — Thu, 16 Feb 2023 00:30:36 GMT

I must be doing something wrong. I appreciate your comments. I'm not sure how to post a module file--when I drag and drop it, I get a message that the file type is not supported?

Re: joining dormer roofs with main roof

Lingwisyer — Thu, 16 Feb 2023 01:01:12 GMT

Put it in a .zip or similar container

Re: joining dormer roofs with main roof

Barry Kelly — Thu, 16 Feb 2023 01:04:45 GMT

You will need to ZIP the MOD file so you can attach it.

The CMD+click method only works with single plane roofs.

I find as soon as you want to start joining roofs at different heights like this, it is better to convert to single roof planes.

You have much better control.

Barry.

Re: joining dormer roofs with main roof

BrunoH — Thu, 16 Feb 2023 07:37:49 GMT

There's a simple way to do this. No need to convert to single roof plane.

Just create your complex roofs intersecting and select them.

Rigth click and choose "Connect to Roofs/Shelves"

Click "Connect", that's all.

The result

The simpler way is always the best.

Re: joining dormer roofs with main roof

Barry Kelly — Thu, 16 Feb 2023 09:31:44 GMT

The OP's dormers are a little higher than yours.

Also you may have trouble where the the roofs overlap and the main roof tucks under the dormer roof up to the dormer wall.

You can play around with the roof trimming body set to 'Pivot Lines', but then the pivot lines have to match the outside of the wall, which may not be wanted.

Set it up as multi-plane roofs and do the initial trim, but I still think it is easier to manipulate exactly as you want with single roof planes.

Barry.

Re: joining dormer roofs with main roof

BrunoH — Thu, 16 Feb 2023 09:43:52 GMT

Nop

Take a look at my reply

Re: joining dormer roofs with main roof

Barry Kelly — Fri, 17 Feb 2023 01:50:48 GMT

Double Nop (what ever that means!).

Your roof that you have modelled is not the same.

Your dormer is at the bottom and the main roof does not tuck under the dormer to the dormer wall.

Playing around with the dormer roof trimming body, you may be able to trim these multi-plane roofs so they look ok in 3D.

But the plan representation will not be correct - you will not see the edge of the main roof going under the dormer to the wall - at least not the last time I tried it.

I had discussions with Graphisoft about it when multi-plane roof were introduced (version 15), but nothing changed then and I don't think it has changed now.

Thought I would give it a go.

I have hidden the pivot lines for clarity.

Barry.

Re: joining dormer roofs with main roof

BrunoH — Fri, 17 Feb 2023 11:15:46 GMT

Hello Barry Kelly

Doesn't this work ?

Re: joining dormer roofs with main roof

Dave Brach — Sat, 18 Feb 2023 03:30:52 GMT

THANK YOU!!! BrunoH's method works.... EXCEPT: the roof still removes the lower part of the roof under the dormer. So, I had to either add a small copy of the main roof under the window, or I had to stretch the dormer roof edge back to the dormer wall and add a copy of the dormer roof.

Re: joining dormer roofs with main roof

Barry Kelly — Sat, 18 Feb 2023 03:42:40 GMT

Sure it does in 3D, if you are happy using the dormer pitching line on the outside of the dormer side walls.

In plan you will not see the main roof extend under the dormer eave.

Barry.

Re: joining dormer roofs with main roof

Barry Kelly — Sat, 18 Feb 2023 03:51:04 GMT

You shouldn't need to use extra roofs.

Try moving the pivot line at the front of the dormer back to the front wall of the dormer - basically increasing the front eaves overhang.

This will adjust the roof trimming body, and it should then not cut the front of the lower wall off.

You just wont see it in plan.

It is the trimming body that controls what cuts the lower roof when you use the 'trim' command.

It can be set to the extent of the roof or to the pivot lines.

You then adjust the pivot lines to be where you want the roof to cut other roofs.

So the pivot lines may not be where you want them to actually pivot the roof, but the good thing is so long as the roof is the correct pitch, it really doesn't matter where the pivot lines are as you can just elevate the roof to the correct height.

Barry.

Re: joining dormer roofs with main roof

BrunoH — Sat, 18 Feb 2023 09:13:53 GMT

You don't need extra Roofs, all reference lines are defining the cut Body.

For 2D real representation you can create a 3D Document from the Plan Point of view.

Set the cut plane of this 3D document above the top of the Roofs.

Activate show Hidden Lines (Third view).

The 3D Document is a live view you can work on. You can annotate it, use GO ...

You can also activate shadows if you want.

Re: joining dormer roofs with main roof

BrunoH — Sat, 18 Feb 2023 10:05:15 GMT

In addition for more complex form (particularly curved shapes) you can use the Shell Tool.

The cut Body can be Editable.

Re: joining dormer roofs with main roof

Lee Hankins — Sun, 19 Feb 2023 10:31:05 GMT

It’s amazing how many of these little gems there are hidden away.

Re: joining dormer roofs with main roof

Dave Brach — Mon, 20 Feb 2023 18:38:22 GMT

Yes, of course that makes total sense. I had my gable end reference line pulled out past the gable wall because I like to stretch the gable roof edge in 3d view, but that can just be done in plan view. This is so much better than what I had been doing all these years.....