Vacuum Vapor Deposition

> I could tell you how thick a non-rotating hull needs to be to
> contain just an atmosphere of 0.5 atm, but I haven't yet gotten
> around to calculating how thick it needs to be to contain the forces
> of rotation nor the internal loads it'll have to support. Maybe
> somebody else has already done these calculations and can share the
> splendor of their insight with us.
A rough estimate can be found by noticing that one atmosphere corresponds to ten meters of water, which again corresponds to three to five meters of rock. If you have half a meter of soil in your habitat, this will add less pressure to the hull than half an atmosphere of atmospheric pressure.