Q3 The traffic sign has a weight of 700 N. The sign is subjected to a uniform wind pressure of 1.5 kPa. The sign is supp

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Q3 The Traffic Sign Has A Weight Of 700 N The Sign Is Subjected To A Uniform Wind Pressure Of 1 5 Kpa The Sign Is Supp 1 (286.04 KiB) Viewed 23 times

Q3 The traffic sign has a weight of 700 N. The sign is subjected to a uniform wind pressure of 1.5 kPa. The sign is supported by a 100-mm-diameter post. The self- weight of the post and the wind load on the post can be neglected. The selected section is 2 m above the ground (1) Calculate the state of stress at Point C, and indicate the results on the sketch of a properly oriented element. (14 marks) (2) Determine the principal stresses at Point C and indicate the results on the sketch of a properly oriented element. (4 marks) (3) If the yield stress is oy = 260 MPa, check if the material at Point C fails or not according to the maximum-shear-stress theory. (2 marks) a = 2 m 1 m 1.5 kPa 3 m B С А D y 2 m Figure Q3