Question: Figure P312 shows a small truss spanning between solid supports and suspending a 10.5 kN load. The cross sections for the three main types of

Figure P3–12 shows a small truss spanning between solid supports and suspending a 10.5 kN load. The cross sections for the three main types of truss members are shown. Compute the stresses in all of the members of the truss near their midpoints away from the connections. Consider all joints to be pinned.

Data Figure P3–12

30 mm 12 mm (b) Cross section of members AB, BC -2.0

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. 30 mm- (d) Cross section of members AD, CD

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