roof issues

[paul.meco]

Greetings all,

I am having some difficulty using the Revit roof tool to model some "interesting" roofs on an a remodel project here in the office. I have attached a couple of jpg's that should explain the issues, but essentially there are a three roofs that all need to join to each other, and I can only get two to join. Revit tells me it can't join the third roof (which appears currently as a thin bar of a roof since I created it as a profile extrusion and then only extruded it 4'-0"). I would have preferred to create the third roof in plan but, as you can see in the framing plan, I don't have two lines that are perpendicular to the slope of the roof. One is perpendicular, and the other is biased so that it forms a valley with the other smaller roof. If anyone can help with this issue, I would greatly appreciate it. Thanks

[jamie.casile80054]

Hi Paul,
Roofs are a tricky concept in Revit. I believe that for a roof to be joined, its edge has to be within the face it wants to join to. I'll take a look, but another option may be to create it as an in-place or separate family. how about massing? you can join together massing 'pieces' and then turn its top into a roof (roof by face....)
Regards,
jamie



Greetings all,

I am having some difficulty using the Revit roof tool to model some "interesting" roofs on an a remodel project here in the office. I have attached a couple of jpg's that should explain the issues, but essentially there are a three roofs that all need to join to each other, and I can only get two to join. Revit tells me it can't join the third roof (which appears currently as a thin bar of a roof since I created it as a profile extrusion and then only extruded it 4'-0"). I would have preferred to create the third roof in plan but, as you can see in the framing plan, I don't have two lines that are perpendicular to the slope of the roof. One is perpendicular, and the other is biased so that it forms a valley with the other smaller roof. If anyone can help with this issue, I would greatly appreciate it. Thanks

[Mike Sealander]

Rather than using the roof joining tool, try making your third roof a large extrusion and then subtracting the unwanted parts with a solid void. Or, if you use roof by extrusion, you can have some luck with Edit Cut Profile to change the plan shape. I like the voids because you can create a void that mimics the 3-d shape of another roof (the roof you want to extrude to) and therefore have your roof cut at the correct pitch.

[whittendesigns]

That's what I would suggest too is extrude that third roof. Then in plan view, after you join the roofs together, use reference planes to mark where your valleys are and clean it up.

One of the things I'm really good at is making tricky roofs work properly. If you still have trouble with it, copy just the roof parts into another file and post it and I'll clean her up for you.

I just did a little figuring on your jpegs that you posted. I assume you know one part of one of the angled roofs is off just ever so slightly. This might complicate things a little for your roof so it might be stubborn to finish.

Check to see what I did with the edit lines and see if you can do the same with yours.

[paul.meco]

Greetings,

Thank you for the advice all. I am having a little more success, but it is still not quite entirely there. I used masses that are then turned into roofs. It is pretty close, but not entirely accurate. I am wondering is there a way to get this precise. Also, I am wondering if there are similar controls available to a user in Revit attempting to create three dimmensional geometry as there are in AutoCAD. Specifically I am talking about the ability to set work planes and trim and snap to points not in the work plane? I was having a considerable amount of difficulty creating the masses, and it was due to the fact that I couldn't comfortably control where I was drawing, and I couldn't trim or snap my geometry based on objects not in my work plane. Does anyone know of a good tutorial on this, and or have any advice? Also, I have attached the roofs as they stand now in Revit. If anyone has any advice to of how to join these roofs, make them efficiently, and/or how to tackle a geometric problem similar to this (ie a process/workflow). Thanks again.

[jamie.casile80054]

Regarding the walls join to the roof. if this is an in-place family, set the category to roofs. if that still doesn't work, you may need to create the family outside of your project, then start an in-place family in your project and add the component there. (don't forget about the categories...)

not sure about how you can get a perfect match. how about making both roofs with the same method of massing? or at the least to stick them both in the family that exists outside your project before you bring them in.
good luck,
jamie

[whittendesigns]

Well, I got everything to line up for you. it was a little toughie wasn't it? I had to move a few things ever so slightly to line everything up correctly. The ridge of the roof you were having troubles with and the main roof needed to match. The addition roof was a little high. After that it went alright.

Sorry, but I deleted your roof by mass. Extrusion works much easier inthis case.

Walls should join just fine now, or edit profile will work too. I gave you a new elevatin view

Hope this works for you.

[paul.meco]

whittendesigns - thank you. Your strategy is clear, and straightforward. I appreciate not only your help, but also seeing a process that works inside of Revit. Cheers

[whittendesigns]

you are very welcome.