Latest Finish Time (LFT)
In Critical Path Analysis, the latest time at which an activity can be completed without delaying the overall project co...
Formula
LFT = Minimum (LFT of succeeding node − succeeding activity duration)
Real World
During the Wembley Stadium rebuild, each structural phase had an LFT tied to the contractual handover date — missing any LFT would have triggered penalty clauses worth millions.
Exam Focus
In a backward pass where two paths leave a node, always take the lowest value — taking the highest is the most common LFT mistake.
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