Roof Membrane Advice
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Well, yeah, the whole curved roof system will probably just work just fine, but the outer edges of the whole assembly needs to bear on a plate line doesn't it? Also, maybe that TIN system needs the walls to be a little buttressed maybe, resisting outward thrust? I'm saying the plate line/top of wall needs to be more realistic. Your existing plate line is shaped like a roller coaster now, and how's someone going to build that out in the field.
Seems like you should concentrate on that major issue before you go too much further with the roof system. You might just need to start out with a level plate line. That TIN system is how geodesic domes are built then?
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I agree with you Joe that it would be much easier with a level top plate but it's certainly not impossible. An undulating top plate can be built as a laminate. Imagine building a wall with only the bottom plate (run the studs wild). Draw the curves you want on a strips of 3/4 plywood. Attach these to either side of the studs and then cut the studs flush to the curves. Now work up a top plate a layer or two at a time using the bottom edge of the plywood to clamp to.
Not the easiest or cheapest way to go, but I don't think that's the primary concern in this project.
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I don't know Sketchy, I do alot of laminating, and curves, and laminating curves that curve in two directions is very difficult, especially with extreme curves as in Fred's model.
Not impossible, but something he should address before he gets much farther into this design.
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Good point Joe, I really didn't take as close a look at the model as you did. Compound curves would be a nightmare. It is something to address for sure. It would be worth it to look at the plate line and mellow out the curves to make it more reasonable to build. Perhaps reighn it in to undulating curves instead of wild curves.
Anything is possible with unlimited time and money but who has that?
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