(Solved): The billboard shown in Figure C1 weighs 8000 N acting in the negative y-direction and is supported ...

The billboard shown in Figure C1 weighs 8000 N acting in the negative y-direction and is supported by a steel tube (Young's modulus E = 200 GPa, Poisson's ratio v = 0.3) that has a 300 mm outer diameter and a 15 mm wall thickness. It is designed for a resultant wind force of 4000 N acting at the centroid C in the negative z-direction. Y 1 m 0.5 m 1.5 m cross-section at fixed end O Z Z A X C 4000 N A 8000 N fixed end Figure C1: Billboard 0.9 m 0.9 m 2.6 m X Determine the displacements ux, uy and uz of the top end of the steel tube 2.6 m above the fixed end. (9 marks)