need help about the design of nodes in geodesic dome structure design

Submitted by Milind Upasani on Fri, 2009-01-23 01:54.

I am trying to create a drawing of a Geodesic dome with 12 divisions of the base of the coupled sperical equilateral triangles.
I could draw the dome with all the strut segments as explained in some notes I had with me.
The strut lenghts match
I am trying to calculate the degrees at which the strut lengths meet so that I can design a node which can join the five and six struts ( as in a space frame ball.)
I have found out that the degrees in the strut lengts vary from 53 to 65 degrees and that I will have to design 13 diffrent kinds of nodes to make this dome
I want you to help me clarify this matter and send me any data you have on the nodes, their types and typically hoe you have addressed this problem?

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Dome structure design
Submitted by TaffGoch on Sun, 2009-02-08 00:41.

Milind,

You can find 3D models of geodesic domes here...
http://sketchup.google.com/3dwarehouse/cldetails?mid=b926c2713e303860a99d92cd8fe533cd
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These are free to download, as is the program used to construct them - Google SketchUp. With the program, you can measure lengths, angles, etc., and can scale a dome to the size you need.
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SketchUp is also fully capable of constructing 3D models of your node designs.

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