Geodesic DomesUpdated: October 3rd, 2018Created: October 1st, 2018
Geodesic domes commonly built of triangle that have are built with various different size triangles. The simplest, more suited to smaller domes, uses 30 isosceles triangles. The sides of which can be calculated below for a given final dome diameter. Check out geo-dome.co.uk
The 2 strut dome is made of six pentagons each of five triangles as shown highlighted in the image. The clear spaces are those formed when the pentagons are 'pulled' together
The individual triangles are all the same size.
Ratio of struts A :: B is 1 :: 1.13
All the triangles are the same and five are used to make each pentagon as shown in the adjacent image.
To calculate struts for other dome widths use the calculator below, but note that larger versions needing longer struts will have to use substantially more robust struts and the covering will also have to match.