Construction Planning and Management
Consider the following operations: 1. Drilling 2. Blasting 3. Mucking 4. Placing steel 5. Placing concrete The correct sequence of these operations in tunnel construction is

1, 2, 3, 4, 5
1, 3, 2, 4, 5
1, 3, 4, 2, 5
1, 2, 4, 3, 5

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

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

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