Construction Planning and Management
Economic saving of time results by crashing

Costliest noncritical activity
Cheapest critical activity
Costliest critical activity
Cheapest noncritical activity

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Construction Planning and Management
In time-cost optimization of a project, crashing is done.

On all the activities lying on the critical path
On original critical activities and those that become critical at any stage of crashing in the order of ascending cost slope
Only on activities lying on the original critical path and having flatter cost slopes
On all the activities

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

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