What is the this roof style? Can it even be done with timber! Its not Mansard or Gambrel.
Though similar to Gambrel notice the extra pitch.
Any pictures, design, sketches of where this has been implemented would be good plus its name of course!
I've updated the question to emphasive that the diagram shows the shape not the design as I thought that was obvious but just in case!
I am not intending to actually design one I just want to know if its done and preferably a picture or design example like one can easily find for a Gambrel roof with a simple search.
Best Answer
As you add more facets it comes to resemble a bow (or bowstring) truss. Those, of course, have internal triangular structure to make them a truss, so they are (very) stable, and their "ultimate" form is to actually have curved top members, rather than straight-line segments.