Construction Planning and Management
At a work site, statistical quality control of concrete means

Measurement of risks to eliminate failures
Reduction in wastage of inspection costs
Reduction in costs for the removal of defects
Applying the theory' of probability to sample testing or inspection

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Construction Planning and Management
Free float is mainly used to

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

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