Construction Planning and Management
At a work site, statistical quality control of concrete means

Reduction in wastage of inspection costs
Reduction in costs for the removal of defects
Applying the theory' of probability to sample testing or inspection
Measurement of risks to eliminate failures

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

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