Fixed Beam:
In Figure 2, we have the example of a fixed beam which is fixed (i.e. no horizontal and vertical displacement and no end rotation of beam) at both ends A and B. These induce six restraints resulting in six corresponding reactions, three at each supports, namely VA, HA, MA at end A, and VB, HB,
Figure: Fixed Beam
MB at end B. Again, these six unknown reactions cannot be determined using the three equations of equilibrium and the structure is statically indeterminate.