The offset from a reference line through B to the arc BD represents the value offbw at that
section.
- Construct the final-stress diagram
Construct Fig. 326 in an analogous manner. The offset from a reference line through B' to
the arc B^1 D' represents the value offbw +fbs at the given section. - Alternatively, construct composite stress diagrams for the top
and bottom fibers
The diagram pertaining to the bottom fiber is shown in Fig. 33. The difference between
the ordinates to DE and AB represents fbi and the difference between the ordinates to FG
and AC represents^.
FIGURE 32. Isometric diagrams for half-span.(b) Final stresses(a) Initial stresses