I built a little calculator for the thickness of the structural hull, mass of the hull and contained atmosphere for a rotating cylindrical habitat, as functions of the length and radius, the "gravity" and air pressure, the mass-per-unit-area of the shielding, armour, landscaping, and fittings, and the strength and density of the structural material. It's an Excel workbook with no macros.
Just at the moment the list of possible building materials is a bit incomplete and some of the values for strength questionable.
I put it on Dropbox for review and personal use:
https://www.dropbox.com/s/7iilf35hdx...ator.xlsx?dl=0