the spherical gas tank is fabricated by bolting together two hemispherical thin shells of thickness 30mm. If the gas contained in the tank is under a gauge pressure of 1.82 MPa. Determine the normal stress developed in the wall of the tank and each of the bolts. is there shear stress in teh bolts? The tank has an inner diameter of 7.20 and is sealed with 900 bolts of 25 mm diameter.