Statically Indeterminate Members
A structure is statically indeterminate when the number of unknown reactions or internal forces exceeds the available equilibrium equations.
$$\Sigma F_v,\; \Sigma F_h,\; \Sigma M$$
Steps:
- Draw the free-body diagram (FBD) of the structure and apply the static equations of equilibrium.
- Formulate additional equations based on deformation relationships (compatibility conditions).
