cutting openings in joined roofs

[donald1767]

I have a gable end roof with a porch off the front as another gable, perpendicular to the other roof. The plate height of the porch roof is lower that the rest of the building. I can create the main roof, the porch roof, and join them together, no problem. Then I cut in opening at the eave of the main roof, so that I do not see the eave going through underneath the porch roof. When I do this Revit tells me I can no longer have the roofs joined. Why is that?

Donald Henke AIA

[beegee]

Try making the cut a little bit inside the gable outline and see if that makes a difference.

beegee

[donald1767]

I have tried that, so matter how small I make the opening in the main roof eave, it will also say it can no longer keep the roofs joined.

Attached is a file with two roofs. One with a small opening under the porch, with the roof that cannot be joined.

Donald Henke AIA

[aggockel50321]

When you make the cut in the upper roof, change your view to wireframe, so you can align your cut with the lower edge of of the porch roof.

[donald1767]

I know I can make the cut for the opening accurate - the problem is if I may any cut whatsoever, Revit refuses to keep the roofs joined. Please see the sample file I upload.

Thanks for the help.

Donald

[beegee]

Donald,

Firstly, I unjoined the roofs, then pulled back the porch roof, then joined it again, but using the external wall as the reference. This works if the external wall is defined as attached to the roof ( It was ).
I then edited the opening that was already there, to define the actual opening required.
As you see by Section 2, the cut face is perpendicular in this opening, leaving awkard non-joins :shock:

The opening should be removed and replaced with one parallel to the roof plane.

I'm out of time for now. Have a play around with it. I think it should work when you do that.

beegee