Question: 1 - 2 4 . A signboard 4 . 5 m by 6 . 0 m in area is supported by two frames as shown

1-24. A signboard 4.5 m by 6.0 m in area is supported by two frames as shown in the figure. All members are actually 50 mm by 100 mm in cross section. Calculaht the stress in each member due to a horizontal wind load of 960Nm2 on the sign. Assume all joints to be connected by pins and that one-quarter of the total wind force acts at B and at C. Neglect the possibility of buckling of the compression members. Neglect the weight of the structure. Ans. AD=1.08MPa.
1 - 2 4 . A signboard 4 . 5 m by 6 . 0 m in area

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