Business – 9.3 Operations strategy – Operations planning and CPA | e-Consult
9.3 Operations strategy – Operations planning and CPA (1 questions)
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Total float is the amount of time an activity can be delayed without delaying the project’s overall completion date. Free float is the amount of time an activity can be delayed without affecting the early start of any succeeding activity.
Calculation for the given network:
- Earliest start (ES) and finish (EF):
- Activity A: ES = 0, EF = 4
- Activity B: ES = 4, EF = 7
- Activity C: ES = 7, EF = 12
- Latest finish (LF) and start (LS) (project finish = 12 days):
- Activity C: LF = 12, LS = 7
- Activity B: LF = 7, LS = 4
- Activity A: LF = 4, LS = 0
- Float values for B:
- Total float = LS – ES = 4 – 4 = 0 days
- Free float = (ES of C) – EF of B = 7 – 7 = 0 days
Thus, activity B has no float; it lies on the critical path.