Question: Question 2 (10) Figure below shows a tank that is to be made by rolling flat sheets of A572 Grade 42 steel into the

Question 2 (10) Figure below shows a tank that is to be

Question 2 (10) Figure below shows a tank that is to be made by rolling flat sheets of A572 Grade 42 steel into the spiral shape shown, where the spiral makes an angle of 0 with the horizontal axis of the tank. The design internal pressure is 2500 kPa. The inside diameter has been specified to be 900 mm to create the desired capacity in the tank. (a) Specify a suitable thickness for the steel sheet to provide a design factor of 4 based on yield strength or to produce a design factor of 6 based on ultimate strength. (b) For the final design of the tank, calculate the so that the maximum stress in the weld direction become 55 MPa (c) Draw the stress element aligned with the weld. Spiral welds y X

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