A spherical gas-storage tank with an inside diameter of 9 m is being constructed to store gas under an internal pressure of 1.60 MPa. The tank will be constructed from steel that has a yield strength of 340 MPa and a maximum allowable shear stress of 204 MPa.
Design the vessel by calculating the minimum thickness required in mm. Use a factor of safety of 3.0 with respect to the yield strength.
