105. For the truss shown in Fig. P-105, determine the cross-sec- tional areas of bars BE, BF, and CF so that the stresses will not exceed 100 MN/m² in tension or 80 MN/m² in compression. A reduced stress in compression is specified to avoid the danger of buckling. Ans. ABE = 625 mm2; Apr = 427 mm2; ACE = 656 mm? %3D %3D %3D

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