marisco Posted February 25, 2017 Share Posted February 25, 2017 Hi Guys, newish user - using X8 on a project I am doing for a semi detached house. I am having a hard time enforcing my vision of the roof into the project with how chiefs roofs work with my limited knowledge. What I am attempting to do is to make a butterfly roof with the shed slopes front and back and a saddle running between them to shed water. When I get the saddle/cricket in place and try to join it to the other planes, the roof goes all wonky (or I need to extend the eaves to almost 4'-0"! Any tips on how I can get this to work? alternatively I could try a troughed butterfly - just not sure how to add a gutter between the shed roofs.... Any help is much appreciated. I'm really starting to like Chief, but these few things just irk me.... Link to comment Share on other sites More sharing options...
GeneDavis Posted February 25, 2017 Share Posted February 25, 2017 More savvy folks than I might be able to auto-build this, but I would do it manually. Link to comment Share on other sites More sharing options...
marisco Posted February 25, 2017 Author Share Posted February 25, 2017 I was trying to manually do it - auto-build gave less than desirable results (probably due to the cantilevers. the pitch is 2/12. but yes Solver - what you are showing is what I am trying to accomplish. here is the second floor underneath The biggest issue is that if I split the planes and move to where I think the ridge should meet the shed roofs, my planes are all off - if I use the join tool it places the roof in odd above below areas as well. i was thinking of working out where the exact middle should be and try from there manually, but there has to be an easier way..... Link to comment Share on other sites More sharing options...
Alaskan_Son Posted February 25, 2017 Share Posted February 25, 2017 This type of roof can definitely be done almost completely automatically. Here's a quick example. Note that you can either break the wall like I did on the top OR you can use the Gable/Roof Line tool... Link to comment Share on other sites More sharing options...
facer_03 Posted February 26, 2017 Share Posted February 26, 2017 Roof Drainage? What are the proposed solutions for collection roof drainage from the proposed butterfly-saddle design? Appears there will be a substantial flow of water to each outlet. The traditional butterfly uses a wide central box gutter as a holding reservoir that then allows progressive water flow to the end rainwater heads. Link to comment Share on other sites More sharing options...
glennw Posted February 26, 2017 Share Posted February 26, 2017 I agree, water disposal is going to be a big problem. Even with huge rainwater heads, I think you are going to have problems. Here is a similar one I did a few years back. I designed a near flat central roof that fell to each side and the water was then picked up in some oversized gutters. This worked well with no water problems. Link to comment Share on other sites More sharing options...
2wheeltodd Posted February 26, 2017 Share Posted February 26, 2017 Drainage is THE issue with an inverted gable. The saddle method is not great, if you can I would suggest glenw's method. More control there. If you do have a saddle be sure to leave yourself some eave to have a large scupper and downspout. It is possible to do a lot of the roof automatically but you will almost certainly have to manually edit some of the planes. Link to comment Share on other sites More sharing options...
marisco Posted February 26, 2017 Author Share Posted February 26, 2017 decide to go with Glennw's route - not that we get that much rainfall/snowfall (320mm/126mm per year) but will also make for easier framing. Great idea, thanks. I know the skylights are not the best idea on that low pitched roof - just asking to fail - client insists they need them in the bathrooms..... colour matching the fascia trim to the windows and soffit to the decks Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now