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

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

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

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

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Construction Planning and Management
Consider the following statements for a power shovel: (i) Output can be increased by reducing the angle of swing for a given depth of cut. (ii) For a given angle of swing, output will be maximum at optimum depth of cut. (iii) Output can be increased by keeping the depth of cut less than optimum depth. (iv) Output can be increased by increasing the size of shovel.

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

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