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Question 2.13: A cylindrical pressure tank of mean diameter 1.6 m, is fabri...

A cylindrical pressure tank of mean diameter 1.6 m, is fabricated by butt welding a 8 mm thick plate along a helix which forms an angle of 20° with the transverse plane. The end caps are spherical having wall thickness 10 mm. If the internal gauge pressure is 0.8 MPa, determine,

(a) stresses in the direction and perpendicular to the weld,
(b) normal stress and maximum shear stress in the spherical cap.

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