Construction Planning and Management
Latest start of an activity is always

less than or equal to latest event time of preceding node
equal to latest event time of preceding node
less than latest event time of preceding node
greater than or equal to latest event time of preceding node

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Construction Planning and Management
Crash project duration is obtained by summing the

Crash durations for all activities
Crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities
Normal durations for all the activities
Crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities

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