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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The critical path consists of activities with zero total float: A → D. To shorten the overall project, we must first look at activities that are not on the critical path but have sufficient total float to allow a reduction without creating a new critical path.
Potential crash candidates (TF ≥ 2 weeks):
- Activity B – TF = 3 weeks (can be reduced by up to 3 weeks)
- Activity E – TF = 2 weeks (can be reduced by up to 2 weeks)
Activity C only has 1 week of total float, insufficient for the required 2‑week reduction.
Recommended crashes:
- Crash Activity B by 2 weeks (from 5 to 3 weeks). New TF for B becomes 1 week, still non‑critical.
- Crash Activity E by 0 weeks (optional) – because the 2‑week reduction is already achieved by crashing B alone.
Resulting project duration:
- Original duration = 24 weeks.
- Reduction achieved = 2 weeks (via Activity B).
- New earliest possible duration = 22 weeks.
Because the critical path (A‑D) remains unchanged, the project finish is now limited by the longest path, which is 22 weeks after the crash.