The following photo is an approximate 4 1/2' radius elipsoid made from two 1/4 geodesics with a spacer element. It is made from 3/4" electrical conduit and connected with 5/16" bolts.
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The following photo is a 15' diameter solar collector/greenhouse. It is built from 3/4" electrical conduit connected by 5/16" bolts.
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The following photo is a 15' diameter greenhouse built with 3/4" electrical conduit. Its connections are made with 5/16" bolts. The covering is held in place with a wingnut over an extra washer.
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The following photo is 1/5 of a 24' compound geodesic. This non Fullerene geodesic can be configured in a 1/6, 1/5, 1/4, 1/2, 3/7, 4/7 type configuration. It is constructed from 3/4" electrical conduit using 5/16" bolt connections. It's high strength characteristics stem from the fact that the shorter tubing is in compression while the longer lengths are in tension under point loading conditions.
