Question

Please include a solution for each part

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Classify each of the frames as statically determinate, statically indeterminate, or unstable. If indeterminate, specify the degree of indeterminacy. All internal joints are fixed-connected 1. 2. 4 3

Answer 1

For Ds = Dsi + Ose Rigid jointed plane Di = 30, Ose - frame T-3 R = 3 (number of boxes) - 301) = 3 To co ty T Be = 9-3 = 6 B = 3+6 = 9 Degree of static indeterminacy is 9 La structure is unstable if we can't write the equilli brium equations at every jointed satisfying the equilli brilem. - The structure is stable C-0 Dsc =8-3= 9-3=6 Degree B = 0+6= 6 of static indeterminacy is and the structure is stable. CD -3, C=0. Mat Fx To Dsi = 3C = 0 Dse - Y-3= 0 structure is statically determinate. søt satisfied at Equilibriuen every "2 joint like joint M, N at n it {fyzo » v=0 I but is not a zero pinned support: Hence it is unstable at the

Y-14 TT Ds; = 3C = 18 Dse = 5-3 = 14-3=11 T To to o Degree of d static Ds - 18 +11 = 29 indeterminacy is 29 stable at the The structure is not marked as locations equillibrium conditions aren't satisified
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