Determine how many 18mm bolts should be used to attach a cap to a cylindrical tank with a diameter of 3.5m and a wall thickness of 16mm that is limited to a normal stress of 150MPa and the allowable stress for the bolt is 295MPa.

A double U-shaped butt weld is to connect two plates 200 mm (d) × 20 mm (b), as shown in the given figure. What is the stress developed in the weld if it is subjected to a moment of 10000 kN-mm? d=200 mm b=20mm

A double U-shaped butt weld is to connect two plates 200 mm (d) × 20 mm (b), as shown in the given figure. What is the stress developed in the weld if it is subjected to a moment of 10000 kN-mm? d=200 mm festbook b=20mm

A scuba tank is being designed for an internal pressure of 2,655 psi with a factor of safety of 2.0 with respect to yielding. The yield stress of the steel is 67,000 psi in tension and 25,000 psi in shear. (Assume that the given radius or diameter is an inside dimension and that all internal pressures are gage pressures.) (a) If the diameter of the tank is 7.0 in., what is the minimum required wall thickness (in inches)? inches (b) If the wall thickness is 0.25 in., what is the maximum acceptable internal pressure (in psi)? psi