In a CPM network, the TOTAL float of an activity is the maximum time it can be delayed without delaying the project. An activity with ZERO total float is called a:
Choose the correct answer
Sub-critical activity
Critical activity (on the critical path)
Dummy activity
Free activity
Correct Answer
B. Critical activity (on the critical path)
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Critical path = longest path through network; all activities on it have TF = 0. Total float TF = LST - EST = LFT - EFT = LFT - EST - D. Free float FF = EST(next) - EFT. Independent float = EST(next) - LFT(preceding) - D. Reducing the duration of a critical activity reduces project duration by the same amount.
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