Homework Sourse2225 Sec Cussify each of the structures as statically determ
2.2-2.5 Sec. Cussify each of the structures as statically determinate or unstable. If indetcrminatc, specify adegree of indeterminacy. 
Solution
a) Structure is stable.
This is statically indeterminate.
D.O.I = 3C = 3*3 = 9
b) Structure is stable.
This is statically indeterminate.
D.O.I = 3C = 3*1-1-1 = 1
c) Structure is stable.
This is statically determinate.
D.O.I = 3C = 3*1-1-1-1 = 0
d)Structure is stable.
This is statically indeterminate.
D.O.I = 3C = 3*1-1= 2
e) Structure is stable.
This is statically indeterminate.
D.O.I = 3C = 3*2-1-1-1 = 3
