11 Suppose that in Exercise 9.16 personnel requirements are specified for the various activities in projects

(a) and

(b) as shown in Table 6.

a. Draw the early-start Gantt chart for projects

(a) and (b), and plot the required number of workers as a function of time.

b. Level the resources for projects

(a) and

(b) as much as possible without extending their durations. Plot the corresponding manpower requirements over time.

TABLE 6 Activity Number Activity Number (i, j) of workers (i, j) of workers Project (a): (1, 2) 5 (3, 6) 9 (1, 4) 4 (4, 6) 1 (1, 5) 3 (4, 7) 10 (2, 3) 1 (5, 6) 4 (2, 5) 2 (5, 7) 5 (2, 6) 3 (6, 7) 2 (3, 4) 7 Project (b): (1, 2) 1 (3, 7) 9 (1, 3) 2 (4, 5) 8 (1, 4) 5 (4, 7) 7 (1, 6) 3 (5, 6) 2 (2, 3) 1 (5, 7) 5 (2, 5) 4 (6, 7) 3 (3, 4) 10