Construction Planning and Management
Consider the following operations:1. Drilling2. Blasting3. Mucking4. Placing steel5. Placing concreteThe correct sequence of these operations in tunnel construction is

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

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Construction Planning and Management
Crash project duration is obtained by summing the

Normal durations for all the activities
Crash durations for all the activities along the critical path obtained by taking into account the crash duration for all the activities
Crash durations for all activities
Crash durations for all the activities along the critical path obtained by taking into account the normal duration for all the activities

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Construction Planning and Management
During the construction period, price variation clause in contracts caters to

Rate of inflation
Variation in cost in materials element, labour element and petrol-oil-lubricant element
Increase in rates of only important materials
Variation in total cost of the project on an ad hoc basis

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