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P14.011 The pressure tank is fabricated from spirally wrapped metal plates that are welded at the seams in the orientation shown. The tank has an inside diameter of 780 mm and a wall thickness of 10.3 mm. For a gage pressure of 1.23 MPa, determine (a) the normal stress perpendicular to the weld (use positive for tension, negative for compression) and (b) the shear stress (absolute value) parallel to the weld. Assume B 56 Answers: (e) Normal stress -MPa (b) Shear stress MPa

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