The 'critical path method' (CPM) in construction project planning identifies:
Choose the correct answer
Only the cheapest method of construction
The longest path through the network — activities with zero float; delay on critical path = delay to project completion
Only material procurement schedule
The path with highest cost
Correct Answer
B. The longest path through the network — activities with zero float; delay on critical path = delay to project completion
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CPM: network-based scheduling technique. Activities as arrows (AOA) or nodes (AON). Forward pass: earliest start/finish; backward pass: latest start/finish. Float = LS − ES or LF − EF. Critical path: chain of activities with ZERO float → any delay delays project. Longest duration path from start to finish. Multiple critical paths possible. Resource levelling: adjust non-critical activities within float to smooth resource demand.
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