Lighthouse Posted December 28, 2016 Share Posted December 28, 2016 I'm still trying to figure out how to do this with some clever hack. I want to make a parabolic roof, and it appears the only way to create a parabola is with the terrain tools. I created a parabolic terrain and changed the materials to look like a roof, and stuck it above the building. Then I pulled the walls up manually to meet the roof. So that all works, more or less. The problem is I can't find any way to create the parabolic ceiling on the inside, which is really the point of this roof. It appears that terrains don't have a bottom surface so they just appear white (invisible) in camera views. Anyone have any creative work-arounds for this? parabola house.plan Link to comment Share on other sites More sharing options...
Gawdzira Posted December 28, 2016 Share Posted December 28, 2016 Either create the roof and ceiling planes with solid subtraction (can you convert that plane to a solid?). Or make the shapes in another program. If that terrain shape is correct for you, export it as an object and bring it into Sketchup? Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 Alan, thanks for the suggestion. You can't turn a roof plane into a solid (it already is a solid, apparently). If I were to import it as a solid, what would be the benefit- that the underside would be visible? I think what would be ideal would be the ability to make any PS a "roof", wherein the walls would automatically snap to the underside. Link to comment Share on other sites More sharing options...
javatom Posted December 28, 2016 Share Posted December 28, 2016 That would be a tough roof to actually build. Is this for real or are you testing the limits of design on a fictional project? Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 For a real project. Yes, tough to build but cool-looking IMHO Link to comment Share on other sites More sharing options...
Richard_Morrison Posted December 28, 2016 Share Posted December 28, 2016 You probably want to use a hyperbolic paraboloid form, since you can do this with straight members. https://www.designingbuildings.co.uk/wiki/Hyperbolic_paraboloid_in_construction A generic paraboloid form is likely going to be more difficult; although I guess anything can be built with enough money. Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 thanks, I used to make those as model tensile structures. Yes, I think that is the best way using straight members. I was thinking of a curved steel ridge beam with standard wood framing coming off it and screwing down plywood (maybe double layer). I guess there will be some plywood waste as it will go off layout as it curves. Maybe with a double layer I could just let the edges flop. Link to comment Share on other sites More sharing options...
yusuf-333 Posted December 28, 2016 Share Posted December 28, 2016 My go with chiefs roofs, am I missing some thing? Let me now please Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 wow, yusuf, that is very cool. It's not actually what I want, but it is harder than what I want, so you could probably easily do what I'm describing. As Richard said, in a hyperbolic paraboloid, all the lines are actually straight. It forms a saddle, which is actually a practical roof shape because it's pitched. Please see image Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 I'm also working on this swayback ridge, which someone modeled here a while ago Link to comment Share on other sites More sharing options...
yusuf-333 Posted December 28, 2016 Share Posted December 28, 2016 29 minutes ago, Lighthouse said: wow, yusuf, that is very cool. It's not actually what I want, but it is harder than what I want, so you could probably easily do what I'm describing. As Richard said, in a hyperbolic paraboloid, all the lines are actually straight. It forms a saddle, which is actually a practical roof shape because it's pitched. Please see image Well thanks, but I am not sure I am getting that geometry right, may be just I will try that one later. Any help you need with those odd geometries Ate welcome. Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 here are some images that might make it clearer: http://bit.ly/2hxtJlH Link to comment Share on other sites More sharing options...
yusuf-333 Posted December 28, 2016 Share Posted December 28, 2016 12 minutes ago, Lighthouse said: here are some images that might make it clearer: http://bit.ly/2hxtJlH I have one similar to one of the pictures in your link, but not sure exactly it is what you need. Let me know Link to comment Share on other sites More sharing options...
Lighthouse Posted December 28, 2016 Author Share Posted December 28, 2016 It's a little hard to tell from the images, but I don't think it is quite right. Here's a video that shows how to do it in sketchup. I don't really want it made in SU, but it shows very clearly exactly what the shape is and how it is constructed geometrically. You can start at 1:20, where he actually does the work Link to comment Share on other sites More sharing options...
payettedesigns Posted December 29, 2016 Share Posted December 29, 2016 This is when I use Revit& Autocad just saying.. But if you get this all figured out it would be awesome. I am super impressed you got as far as you did. Link to comment Share on other sites More sharing options...
payettedesigns Posted December 29, 2016 Share Posted December 29, 2016 My other question would be how does chief walls build to the roof structure.? Even if it became a sketch up file. Tell me more please. There would be some Ruby work here Yes? Link to comment Share on other sites More sharing options...
Rich_Winsor Posted December 29, 2016 Share Posted December 29, 2016 1 hour ago, Lighthouse said: I'm also working on this swayback ridge, which someone modeled here a while ago I did one of those many moons ago. It involved using Polyline Subtraction. I can't find the plan right now but I have a couple of saved images. BTW, has anybody heard from Bill Emery lately. I'm sure Bill could build that roof. He was a big help to me at the time. Link to comment Share on other sites More sharing options...
yusuf-333 Posted December 29, 2016 Share Posted December 29, 2016 2 hours ago, Lighthouse said: It's a little hard to tell from the images, but I don't think it is quite right. Here's a video that shows how to do it in sketchup. I don't really want it made in SU, but it shows very clearly exactly what the shape is and how it is constructed geometrically. You can start at 1:20, where he actually does the work It would be great that chief's solid modeling capability got improved. But I am sure you can do a lot when you get adapted to how chief do what it can do. Here is the plan if any one wants to play with it. Also similar topic in the past had some interesting flower house Plans, Here is the link to that topic https://chieftalk.chiefarchitect.com/topic/6186-roofs-and-shapes-a-short-video/?do=findComment&comment=54606 This short video and The test plans are posted in the above loink. hope that helps too paraboloid 1.plan Link to comment Share on other sites More sharing options...
Lighthouse Posted December 29, 2016 Author Share Posted December 29, 2016 Wow, thanks so much for posting- I'm going to play with the plan now. This is an image of what I just figured out, which I suppose is obvious, that you can rotate a curved roof to get some interesting shapes 1 Link to comment Share on other sites More sharing options...
yusuf-333 Posted December 29, 2016 Share Posted December 29, 2016 7 minutes ago, Lighthouse said: Wow, thanks so much for posting- I'm going to play with the plan now. This is an image of what I just figured out, which I suppose is obvious, that you can rotate a curved roof to get some interesting shapes Sure you got it, keep up the good work sir. Thanks Link to comment Share on other sites More sharing options...
Lighthouse Posted December 29, 2016 Author Share Posted December 29, 2016 Well, that was a strange way to spend 6 hours. Now I just have to talk someone into wanting a Thai temple Link to comment Share on other sites More sharing options...
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