Question 5 (10%) Determine the horizontal displacement of the roller at B and the vertical displacement...

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Question 5 (10%) Determine the horizontal displacement of the roller at B and the vertical displacement at C of the steel truss system illustrated in Figure 5. The members are made of steel with the Young's modulus of 200 GPa. All members have the same cross-sectional area of 250 mm. A C 30 30 4 m 4 m B Figure 5 6 KN Question 6 (15%) An open-ended cylindrical steel tank having an internal diameter of 4 ft is subjected to an internal pressure of 5000 psi and an external pressure of 1000 psi. The Young's modulus and Poisson's ratio of steel are 3.2 107 psi and 0.3, respectively. (1) If the allowable stress of steel is 36 ksi, what is the minimum allowable outside diameter of the tank? (2) What is the maximum tensile stress if the tank with the minimum allowable outside diameter is subjected to the internal pressure only? Determine the change in wall thickness of the cylinder in this case. Question 5 (10%) Determine the horizontal displacement of the roller at B and the vertical displacement at C of the steel truss system illustrated in Figure 5. The members are made of steel with the Young's modulus of 200 GPa. All members have the same cross-sectional area of 250 mm. A C 30 30 4 m 4 m B Figure 5 6 KN Question 6 (15%) An open-ended cylindrical steel tank having an internal diameter of 4 ft is subjected to an internal pressure of 5000 psi and an external pressure of 1000 psi. The Young's modulus and Poisson's ratio of steel are 3.2 107 psi and 0.3, respectively. (1) If the allowable stress of steel is 36 ksi, what is the minimum allowable outside diameter of the tank? (2) What is the maximum tensile stress if the tank with the minimum allowable outside diameter is subjected to the internal pressure only? Determine the change in wall thickness of the cylinder in this case.