In the previous sections, we have looked at how to solve indeterminate systems with only one degree of indeterminacy (either internal or external determinacy). But, what happens if we have a system that has two or more degrees of indeterminacy? Such a situation is depicted in Figure 8.19. This beam is similar to the indeterminate beam studied previously in Figure 8.1, but with a fixed end at point A instead of a pin. This gives the beam an extra degree of indeterminacy, making it a 2° indeterminate system.

Figure 8.19: Force Method for Structures with Multiple Degrees of Indeterminacy