43 For each of the following network diagrams determine both

4.3

For each of the following network diagrams, determine both the critical path and the expected project duration. The numbers on the arrows represent expected activity times.

Solution

a.

Correct Answer:

Critical Path is : 1–3–6–9–11–12 (it will take longest time to complete the project)

Expected project duration is : 10+6+4+5+6= 31

b.

Correct Answer:

Critical Path is : 1–2–5–7–8–9 (it will take longest time to complete the project)

Expected project duration is: 5+18+10+11+ 9+2 = 55

c.

Correct Answer:

Critical Path is: 1–2–5–12–16 (it will take longest time to complete the project)

Expected project duration is: 10+14+13+7 = 44