Answers: FAB=0 FBC=0 FDE=20kN c FEF=20kN c FAF=70kN c FBE=40kN c FCD=40kN c FAE=0 FFB=28.3kN t FBD=28.3kN t FEC=0 Answers: FAB=21.3kN c FBC=5.33kN c FDE=0 FEF=5.33kN t FAF=0 FBE=4kN c FCD=0 FAE=0 FFB=20kN t FBD=0kN FEC=6.67kN t Problem 3.0 Note that the bracing diagonals are not joined where they cross, and the diagonal members are not capable of carrying compression forces. Answers: Reactions: AY = +30kN upwards; BY = 30kN downwards; BX = 40kN to the right. Member forces: FAD =30kN compression; FAC = 0kN; FDB = 50kN tension; FDC =40kN compression; FBC =30kN tension
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