- 2072 Chaitra · 2 marks
Critical activities and float definition
Short answer
Critical activities lie on the longest path and have zero total float; any delay in them delays the entire project. Float (slack) is spare time available for an activity, allowing it to be delayed or extended without affecting the project completion date. Main types are total float (LFT – EFT), free float, interfering float, and independent float.
Define critical activities and float.
Critical activities are the activities of a network that lie on the critical (longest) path; they have zero total float (EST = LST and EFT = LFT), so any delay in them delays the whole project.
Float (slack) is the spare time available to an activity: the time by which it can be delayed or extended without delaying the project completion. The main types are total float , free float, interfering float and independent float.
✓ Answer checked by Claude Opus 5.5 (high effort)
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