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

Normal durations for all the activities
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
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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Construction Planning and Management
The reduction in project time normally results in

Decreasing the direct cost and increasing indirect cost
Increasing the direct cost and decreasing the indirect cost
Decreasing the direct cost and indirect cost both
Increasing the direct cost and indirect cost both

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Construction Planning and Management
Free float for any activity is defined as the difference between

its earliest finish time and earliest start time for its successor activity
its latest start time and earliest start time
its latest finish time and earliest start time for its successor activity
its earliest finish time and latest start time for its successor activity

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Construction Planning and Management
Free float is mainly used to

Establish priorities
Identify the activities which can be delayed without affecting the total float of preceding activity
Identify the activities which can be delayed without affecting the total float of either the preceding or succeeding activities
Identify the activities, which can be delayed without affecting the total float of succeeding activity

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