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

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Construction Planning and Management
Output of a bulldozer is(i) Increased if drawbar HP of the tractor is increased for a given hauling distance(ii) Decreased if drawbar HP of the tractor is increased for a given hauling distance(iii) Increased if the hauling distance is increased for a given drawbar HP of the tractor(iv) Decreased if the hauling distance is increased for a given drawbar HP of the tractor

(ii) and (iii) are correct
(ii) and (iv) are correct
(i) and (iv) are correct
(i) and (iii) are correct

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Construction Planning and Management
Whenever an activity has zero total float, then

Free float and independent float both must be zero
Free float of the activity must be zero but independent float need not be zero
Independent float must be zero but free float need not be zero
Free float and independent float both need not be zero

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Construction Planning and Management
Batching refers to

Weighing accurately, the quantity of each material for a job before mixing
Adjusting the water to be added in each batch according to the moisture content of the materials being mixed in the batch
Controlling the quantity of each material into each batch
Controlling the total quantity at each batch

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