Bay Window Roof

[Anonymous]

 Can Someone please assist me with how to create the attached roof type in Revit?

Thank you.

[SteveKStafford]

My blog post, it has a screencast. Might help?

[Anonymous]

Thank you very much Sir.

[barthbradley]

Something I did for another thread....

...What the heck!!! I just noticed it's the same roof that @SteveKStafford is showing in his post!  Totally weird coincidence!   

[barthbradley · Accepted solution]

Hey @Anonymous!  I tracked down this fun thread we had earlier this year on the same subject. Check it out! Note @constantin.stroescu's clever approach as well.  

https://forums.autodesk.com/t5/revit-architecture-forum/roof-over-bay/m-p/7696345#M178243)

[Anonymous · Accepted solution]

Thank you very much.

[georgehobel]

Two things that come to mind....well three actually (but breakfast doesnt count).... 1.  why wouldn't you just modify the footprint of the larger roof to include the bay area... the end result is the same and it's quicker.  I did learn some things in that video, (some techniques that I havent seen, and can be useful though).

2.  I'm not a fan of just changing the depth of the overhang for the bay window area as that can create challenges for the carpenter.  Just arbitrarily changing the overhang  will also change the facia, or soffit, or the heel cut of the rafter.. the guy in the field will have to "figure it out" on the fly.  Maybe he will leave it to the trim carpenter to even things up... maybe not.  Maybe they will say, " the gutter will cover it up"... .

3.  If you look at the left side of that bay. there is a small section of wall perpendicular to the main rear wall of house... that offset should be reflected in the shape of the bay roof as well.  I know that drawing wasnt the original one in questions, but it is part of the reason why the corner didnt match up at the eave... not getting it right on paper causes errors in the field...

Man I'm cranky today... time for that breakfast.

[barthbradley]

Not sure I follow you, @georgehobel. It’s not possible to do it as one roof, but it can be done with two roofs, and without using shape editing or joining. Pink and Blue Roofs are both done conventionally using Define Slope method – with a couple of Slope Arrows in the larger roof to make the “widow’s peak” for the adjoining Bay Roof.  

[georgehobel]

I guess i could be wrong about doing it all at once...ill have to try it
and report back.
In the video posted, not yours, they put a 24" overhang on all sides...but
the facia line of the right hand side of the bay didnt align with the main
corner...so he just adjusted the facia line to meet...my point is...you
cant just do that. It causes problems in the field...then...theres an
extra jog in the left side wall that is not reflected in the roof...but it
can't just disappear...the jog has to be in the roof also. Fyi..im not
satisfied with my breakfast today...but theres hope for tomorrow.

[SteveKStafford]

I agree, the wall layout that my video was based on was not designed with the roof in mind. Something would have to give to make the geometry work out in the field. Regardless, the technique I showed was more about creating the roof shape with Revit than trying to get the original poster to revise wall layout.

[georgehobel]

I undertstand steve... im always in a learning mode, studying everything i
see. I did find some nuggets in your technique that i will have to
incorporate in my workflows..

[barthbradley]

I still don't get it. Maybe I need to eat a bowl of Wheaties. 

The walls and roof I modeled are based on the image below (same one Steve used) -- except I used a 1'-0" overhang all around.  I don't see an issue framing it.   What am I missing?  

 

[georgehobel]

Not your video...steves...
BTW..stay away from the Wheaties...you see what happened to Bruce.

[barthbradley]

No worries. I'm not a "Pole Vaulter".  he, he.  

[georgehobel]

OK.. you guys were right.. cant do that roof in one shot.... 🙂