Question

The moveable gantry is used to erect and prepare a 500 Mg rocket for firing. The primary structure of the gantry is approximated by the symmetrical plane truss shown in Figure Q3, which is statically indeterminate. As the gantry is suspended a 50 Mg section of the rocket at point A, the strain gage indicated a tensile force of 120 kN in member CD and a compressive force of 50kN and 120 kN in member AB and BG respectively due to the 50-Mg load. Calculate the force in members BD, BE, EF and BF and state if these members are in tension or compression. (25 marks) (Answer: F_DB 120 kN(C), F BE-120 kN(C), F_EF 120 kN (T), F_BF- 200 kN (T)) HCD 16 m J A B 16 m 24 m 16 m

Answer 1

your given BF is wrong that should be in compression in sence but you given tension so my solution is correct