Roof Problem - Partial Turret w/ Straight Ridges

[rdmanns]

I'm having a problem that I just cant seem to solve. I've tried in place families using sweeps and revolve solids along with creating roofs defined by slope arrows but almost always end up with the exact same results. I've even tried joining three separate roof forms.

I'm trying to create a relatively simple roof form but revit keeps trying to over-complicate things by making the "hip ridge beams" curved. I've attached some sketchup images of what im trying to do along with the revit model.

[whittendesigns]

my mind is telling me that your roof in sketchup is not a consistent 6/12 pitch throughout the face of the curved part of the roof. Revit is giving you what I believe is modeled correctly, but I also can say, it does not look like this in the field.

If your arc's start point is at where the hips connect, then you will have flat hips there.

[affdesco]

As note by whitten.. is correct. I have a similar roof structure on my current design. In my case the hips are straight because my radius dies into each hip.
In your project the bow front connecting to the adjacent walls will have a gradient roof pitch when built. The only way to obtain such a roof is to create the roof in 2 steps. first the rectilinear then the roof bowed section. This is also how you would have to build it on site. else, bowed hips. I was able to finish my roof (where yours is bowed) with a curved roof extrusion. Not the only way but it did work well for me. There was a lot of pickup work in Revit to add the fascia, gutters, roofing and such. There will be even more on site when you get to it. I needed to create arcing sweeps that were detailed so that I could replicate it on site.

[Scott D Davis]

As a note: Sketchup seems to be able to do it, but thats because Sketchup is a face-based modeler, and cannot draw a "true" curve. Any curve in Sketchup is actually a segemented line, made to appear smooth. So the Sketchup example being made of straight segments seems to work. The Revit model is closer to reality.

[captainbunsaver]

I notice that if the curved wall is a complete semi-circle, Revit builds the roof corectly. If however, the curved wall is not a semi-circle, Revit produces a roof that does not reflect reality.
How would this roof be made in Revit (for a wall that is an arc, but not semi-circle)?

TC

[rdmanns]

I understand what everyone is saying... obviously a roof of this nature would be stick built since each segment has a different pitch... BUT... how is it done in revit?