Construction Planning and Management
Preliminary project report for a road project must contain

The contract documents for inviting tenders
The soil survey, traffic survey, concept design and approximate cost
The several alternatives of the project that have been considered
The detailed estimated cost based on detailed design

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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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