Example 4.14. Determine horizontal deflection of C and slope at A of a rigid-jointed plane frame as shown in Figure 4.20(a). Both members of the frame have same flexural rigidity, EI .

Solution: Horizontal deflection of C : Apply a unit load C as shown in Figure 4.20(b).

Consider AB : ( x measured A )

Consider BC : ( x measured C )

The horizontal deflection of point C is given by