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Originally Posted by Tom Kalbfus
Once we get the required tensile strength and we know the strength of materials, then we can find the required diameter ot the outer ring that is needed to hold the middle ring together.
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The required tensile strength of a proposed "ringworld material" is roughly equal to that of the strong nuclear force.
Last time:
you cannot build a ringworld out of baryonic matter in the standard solid matter phase. It is many, many orders of magnitude too weak.
Something like stabilised single-molecule neutronium is roughly what you need to build a ringworld. Making the baseplate thicker simply makes the problem
worse.