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Prolate spheroid Igloo mold gore calculation -- 2

I want to have a prototype mold for building igloos.

We will build these, shoot some snow on it and remove the mold from inside!

I have 6 4feet*8feet plastic corrugated sheets. So the circumference at the base will be 24.

The problem is that I don't want a perfect dome, I want a prolate spheroid dome. The structure will be much stronger this way.

Ration diameter to height should be 5 to 6, or any suggestion you might have to make the best use of the material. So height is 1.39m

I want to have the pattern to cut. With height points and width.

Something like this (Those are for sphere...not prolate spheroid)

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Or this

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Also, I need an entrance so a 3 feet high curved like an igloo entrance with an extra sheet. So I need to know where to cut for that entrance.

Thanks!

ทักษะ: AutoCAD, CAD/CAM, วิศวกรรมเครื่องกล, ออกแบบผลิตภัณฑ์, Solidworks

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