Height of 20 foot dome
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Hello friends...what is height of 20 foot dome plz? Thx...Shelly, Riverside California, usa
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The height of your dome is your radius PLUS the height of the your compass arm/the equator's height off the ground.
A 20 foot dome with a compass set at three feet off the ground (what we usually do) will be 10 (radius) plus 3 (equator height) = 13 feet high.
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That was very helpful... thank you so much!!!!
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I think having 3 ft of just a cylindrical shape is useful. It is better than the walls caving in a little at the bottom because it weakens there.
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@KnowItAllTeen You bring up a rather controversial issue among dome designers. It seems to come down to form vs function. Engineering will always choose the cylindrical base; architecture will always demand the untainted sphere.
Domegaia happens to be led by an architect therefore their domes are purely spherical, always, no exception. My friend is a retired engineer - his dome uses the cylindrical base.
I have yet to hear of a pure sphere aircrete dome developing cracks at the equator. But that is not to say that I won't at somepoint in the future.
