The Lead-Time-Stretching Factor and Probable Scheduling
The following exercise will allow you to practice the use of the lead-timestretching factor as well as probable scheduling. It uses the same network example as in Figure 12.7.4.1.
Solve the two probable scheduling problems shown in Figure 12.7.5.1. Hint: First, calculate a new lead-time-stretching factor using the formula in the lower part of Figure 12.3.6.3, based on an appropriate solution of one of the four problems in the previous exercise (12.7.4) as an initial solution.
(COLUMNS CANT COPY)
Fig. 12.7.5.1 Two probable scheduling problems.
Some common problems in the calculation process that can lead to errors are
- Not understanding the goal and principles of probable scheduling
- Not understanding the formula for recalculation of the lead-timestretching factor in probable scheduling
- Not choosing the most appropriate last calculation as initial solution for recalculation of the lead-time-stretching factor