sec 2225 d 211 Classify each of the structures as staticall

sec. 2.2-2.5 , d 2-11 Classify each of the structures as statically determinate, ically indeterminate, or unstable. If indeterminate, specify the degree of indeterminacy tb) Prob. 2-11

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