Structures HW2 Solutions

Structures HW2 Solutions - 3-14. Determine the force in...

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Unformatted text preview: 3-14. Determine the force in each member of thetnrss State if the nesbers are in le$sion orcompression.Joirt g:+llr, = o.1:4'. fttoint A :1r4 = o:+TIp, - g,Joiil t :lEF, = t* t l q , = qJoi0r D :F u o F r c2.31-2Farsin3(F= fer = 2.31kN(C)Frc = 2.31 LN(T)2.ll - 2.3lsin 30o - F-coc 30o + Flacos 45o = 02 - 2.3lcoc 3Oo + Faesin 45o - f,,;sin 30 : 0Fp = 2.2akN(DFp = 3.16tl'f(C)Frc = 3.16kN(C)2 ( 3 . l 6 F i n S - F r o = 04o - 3'16 tN(c)foc - 2.2a kN(T).Lr^lr EA BA cZ . V t J--7\4A.,. t F J -rcatrvr {A!.AtEAngA!JJ o , . l t cJ.,.rY D2.ltlZRLrt A.t! K^JFx: \58lf& The truss shown is used to support the floordeck. The uniform load on the deck is 2.5 k/ft. Thislmdbtrasffifromthe deck totte floor beams'which rest on the top joints of the truss Determinethe force in each member of the truss, and state ifthe members are in tension or compression' Assumeall members are pin-connected.l5(-Tlz'6 l -Gr.'lolI,9,oLJoint A :- v , = u .+ 1 ! F ' = Glornr IV:+ t t r , = 0 ;, y:, = 0,,,oinr M:- g c , = 0 :+ 1 I J , = o ',oint I :+ T ! f , = 0 :' ! F ' = 0 :Joint C:...
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Structures HW2 Solutions - 3-14. Determine the force in...

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