each of the structures as statically uminuate staticaly inde

each of the structures as statically uminuate, staticaly indeterminate, or unstable. if Cassify nseismainate, specify the degree of indeterminacy

Solution

a) Structure is stable.

This is statically indeterminate.

D.O.I = 3C = 3*1 = 3 { c= number of cuts necessary for making a stable cantilever frame}

b) Structure is unstable.

This is statically indeterminate.

D.O.I = 3C -1-1-2= 3*2-1-1-2 = 2

c) Structure is stable.

This is statically indeterminate.

D.O.I = 5-3=2

D) Structure is unstable.

This is statically indeterminate.

D.O.I = 3C -1-1= 3*1-2 = 1