Hemispherical end caps are welded to a cylindrical main body to form a propane storage tank. The tank has an inside diameter of d1=40in. and is to be subjected to a maximum internal pressure of p=120 psi. The allowable tensile stress in the wall of the tank is 12 ksi and the allowable tensile stress in the weld is 8 ksi.
a) Determine the minimum wall thickness Tc of the cylindrical part of the tank.
b) Determine the minimum wall thickness Ts of the hemispherical end caps
c) What is the minimum thickness of the weld?