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Unformatted text preview: mm as shown in Fig. 3. The dimensions of the sign are 2 m 0.75 m and its lower edge is 3 m above the support. The wind pressure against the sign is 1.5 kPa. Determine the following: a) The internal forces and moments at the base of the pipe at section aa . Draw the appropriate freebody diagram. b) Determine the normal stress and shear stress at point A on the cross section at section aa . c) Determine the normal stress and shear stress at point C on the cross section at section aa . d) Draw the stress state at point A on a differential volume element located at this point. e) Is this a statically determinate or statically indeterminate problem? Explain. Note: Be sure to clearly show all work and state units. Fig. 3...
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 Fall '08
 Ingchang,J
 Stress

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