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The truss shown in the figure spans a total space of 18.0 ft and carries two concentrated loads on its top chord. The members are

The truss shown in the figure spans a total space of 18.0 ft and carries two concentrated loads on its top chord. The members are made from standard steel angle and channel shapes as indicated in the figure. Consider all joints to be pinned. Compute the stresses in all members near their midpoints away from the connections.

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30 mm 12 mm (b) Cross section of members AB, BC -2.0 m- 30 10 mm- B 30 10.5 KN (a) Truss with load applied to joint B. (c) Cross section of member BD -2.0 m- 5 mm typical 10 mm C 30 mm- (d) Cross section of members AD, CD

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