- Mp 0 Fdg 4 M 5 Kn 3 M 0 Fdg Fdg 3 75 Kn Fy 0 3 75 Kn Ffi 0 Fei 3 75 Kn A When Two Or 1 (158.44 KiB) Viewed 48 times
Mp = 0: FDG(4 m) - (5 kN)(3 m) = 0 .. FDG FDG = +3.75 kN Fy = 0: -3.75 kN - FFI = 0 FEI = -3.75 KN = = = a) When two (or more) members are connected by a pin, it is does not matter in which member the pin is taken. However, it is considered more efficient to to take the pin as part of a multi-force member. Discuss this in the context of the truss in this question. [2 Marks] b) Using diagrams, and compulsorily in your own words, explain why is the action of constraint at J (in reality a gusset plate, idealized as a smooth pin joint) on members JH, JG and JK modelled as only a force? In other words, why is the gusset plate joint not modeled as a rough pin joint? [4 Marks] c) Using a diagram (compulsory!), point out the number of b rigid bars which are connected at j joints with c foundation constraints, in this truss. (Please mark joints and bars with arrow) (1+1+2 marks] (Upload answer of this question in a single pdf file)