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

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

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Construction Planning and Management
Earliest finish of an activity is always

Greater than or equal to earliest event time of the following node
Less than earliest event time of the following node
Greater than earliest event time of the following node
Less than or equal to earliest event time of the following node

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