From the riveted joint shown, determine the resultant shear stress induced on the most heavily loaded rivet. Use a uniform rivet hole diameter of 20 mm. Dimensions in mm.

The pressure tank shown is fabricated from spirally-wrapped metal plates that are welded at the seams in the orientation shown. The tank has an inside diameter of 48 in. and a wall thickness of 0.375 in. Determine the largest allowable gage pressure if the allowable shear stress parallel to the weld is 3.10 ksi.

When the stress conditions are given as shown below, calculate the vertical stress and shear stress acting on the ab face.