Construction Planning and Management
A tractor whose weight is 20 tonnes has a drawbar pull of 2500 kg, when operated on a level road having a rolling resistance of 30 kg per tonne. If this tractor is operated on a level road having a rolling resistance of 40 kg per tonne, then the drawbar pull of the tractor will

Increase by 250 kg
Increase by 200 kg
Reduce by 200 kg
Reduce by 250 kg

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

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

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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 detailed estimated cost based on detailed design
The several alternatives of the project that have been considered

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