Depending on which of Exercises 7 through 12 you have completed, determine the overall factor of safety of one or more of the following structures. Assume steel members with a yield strength of S_Y = 36. × 10⁶ lbf/in² (or 250 MPa) and an elastic modulus of E = 29. × 10⁶ lbf/in² (or 200 GPa).

Also assume square cross-sections, and consider buckling.

a. The truss in Exercise 7. Assume A = 0.50 in² for all members.

b. The truss in Exercise 8. Assume A = 1.00 in² for all members.

c. The truss in Exercise 9. Assume A = 4.00 cm² for all members

d. The truss in Exercise 10. Assume A = 2.25 cm² for all members.

e. The truss in Exercise 11. Assume A = 1.50 in² for all members.

f. The truss in Exercise 12. Assume A = 2.00 in² for all members.