Question: a. A boiler 3 ft in diameter with SA36 steel plates t in thick has a longitudinal seam which is a double-bolted lap joint. If the SA499 steel bolts are 1 in in diameter and pitch = 2 in. find the safe internal pressure. Use the ASME code.
b. Replacing the bolts by a single-bead lap weld. find the safe internal pressure if the 3-in weld has an allowable shear stress of Id 001 psi.
c. Replacing the bolts with a butt weld, find the safe internal pressure.