A cylindrical vessel $16ft$ inside diameter and $32ft$ tangent to tangent length is required to process petroleum hydrocarbons at $230$ and $200F.$ The vessel is to be designed to code specifications. The corrosion allowance is $\frac{1}{16}$ in$.$ determine the minimum shell thickness approximating the nearest standard thickness. Select suitable formed heads for the vessel and determine their thickness and dimensions. The steel used for fabricating the shell and formed heads is SA$-283$ Grade C and joint efficiency of $0\mathrm{.}8.$