ITPEC FE Morning October 2021 Question 53
ITPEC FE Morning October 2021 — Question 53 of 80
The question asks what term describes the required waiting time between one activity's finish and the next activity's start.
Answer: (b) Lag
Lag is the amount of time a successor activity must wait after the predecessor finishes before it can begin. For example, pouring concrete (predecessor) → waiting 3 days to dry (lag) → building walls (successor).
Why not others:
- (a) Free float — the maximum delay of an activity that does not push the earliest start of any immediate successor
- (c) Lead — the opposite of lag; it allows a successor to start before the predecessor finishes (overlap)
- (d) Total float — the maximum delay of an activity that does not push the project end date
Key rule: Lag = mandatory wait after predecessor; Lead = allowed overlap before predecessor finishes.
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