The Simplified Stiffness Method discussed in Chapter 3 can be applied to analyse
indeterminate frames. The fixed-end forces and displacements due to applied loads
acting on single-span beams are used as input [Handout 3]. Similarly, the member-end
forces and displacements due to a unit displacement corresponding to the unknown
displacement are used as input. These member-end forces are called stiffness
coefficients [Handout 4]. The solution procedure is similar to that of multi-span beams.