Since she documented the process quite well, you could find the following information about the design. The seamless branch has a thickness of 12mm and an internal diameter of 352mm. The branch does not penetrate the vessel wall, and therefore the diameter of the hole cut in the vessel wall is also 352mm. The compensating ring will be 49mm wide and 10mm thick. The fluid contained is mildly corrosive, and over the life of the vessel is expected to corrode a total of 2mm. At the design temperature, the design tensile strength of the shell, branch and compensating ring material is 119MPa. Weld fillets associated with the attachment of the branch and compensating ring will be of 4mm and 5mm throat thickness, respectively. The calculated missing area A is 2,583mm2 and the area claims A1 to A5 which are 1,343mm2, 620mm2, 0mm2, 82mm2, 637mm2, respectively. For the purpose of these questions, take the allowable stresses in welds to be as follows: Fillet weld in end shear 70% Butt weld in tension 74% Butt weld in shear 60% W: [ Select ] N Wwelds: [ Select ] N