I am designing a vessel that is 100 ft long (tan to tan) and 16 ft wide (diameter). This vessel has 23 stiffening rings and demands for more than three saddles. I have tweaked a lot with the stiffener sizes, materials and number of saddles (four) to remove all exceeding stresses but now only one...
Why do we use reinforcement pads whenever there is an opening of a particular size in the vessel? Is it due to stresses induced due to cutting and welding?
